-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
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--
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--
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-- Copyright (C) 2019
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-- Copyright 2020
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-- ASTRON (Netherlands Institute for Radio Astronomy) <http://www.astron.nl/>
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-- ASTRON (Netherlands Institute for Radio Astronomy) <http://www.astron.nl/>
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-- P.O.Box 2, 7990 AA Dwingeloo, The Netherlands
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-- P.O.Box 2, 7990 AA Dwingeloo, The Netherlands
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--
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--
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-- This program is free software: you can redistribute it and/or modify
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-- Licensed under the Apache License, Version 2.0 (the "License");
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-- it under the terms of the GNU General Public License as published by
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-- you may not use this file except in compliance with the License.
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-- the Free Software Foundation, either version 3 of the License, or
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-- You may obtain a copy of the License at
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-- (at your option) any later version.
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--
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--
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-- This program is distributed in the hope that it will be useful,
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-- http://www.apache.org/licenses/LICENSE-2.0
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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--
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-- You should have received a copy of the GNU General Public License
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-- Unless required by applicable law or agreed to in writing, software
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-- along with this program. If not, see <http://www.gnu.org/licenses/>.
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-- distributed under the License is distributed on an "AS IS" BASIS,
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-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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-- See the License for the specific language governing permissions and
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-- limitations under the License.
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--
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--
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-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
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-- Author:
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-- Author:
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-- . Eric Kooistra
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-- . Eric Kooistra
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-- Purpose:
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-- Purpose:
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-- . Collection of commonly used base funtions
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-- . Collection of commonly used base funtions
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-- Interface:
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-- Interface:
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-- . [n/a]
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-- . [n/a]
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-- Description:
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-- Description:
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-- . This is a package containing generic constants and functions.
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-- . This is a package containing generic constants and functions.
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-- . More information can be found in the comments near the code.
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-- . More information can be found in the comments near the code.
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LIBRARY IEEE;
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LIBRARY IEEE;
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USE IEEE.STD_LOGIC_1164.ALL;
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USE IEEE.STD_LOGIC_1164.ALL;
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USE IEEE.NUMERIC_STD.ALL;
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USE IEEE.NUMERIC_STD.ALL;
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USE IEEE.MATH_REAL.ALL;
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USE IEEE.MATH_REAL.ALL;
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PACKAGE common_pkg IS
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PACKAGE common_pkg IS
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-- CONSTANT DECLARATIONS ----------------------------------------------------
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-- CONSTANT DECLARATIONS ----------------------------------------------------
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-- some integers
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-- some integers
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CONSTANT c_0 : NATURAL := 0;
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CONSTANT c_0 : NATURAL := 0;
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CONSTANT c_zero : NATURAL := 0;
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CONSTANT c_zero : NATURAL := 0;
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CONSTANT c_1 : NATURAL := 1;
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CONSTANT c_1 : NATURAL := 1;
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CONSTANT c_one : NATURAL := 1;
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CONSTANT c_one : NATURAL := 1;
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CONSTANT c_2 : NATURAL := 2;
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CONSTANT c_2 : NATURAL := 2;
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CONSTANT c_4 : NATURAL := 4;
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CONSTANT c_4 : NATURAL := 4;
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CONSTANT c_quad : NATURAL := 4;
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CONSTANT c_quad : NATURAL := 4;
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CONSTANT c_8 : NATURAL := 8;
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CONSTANT c_8 : NATURAL := 8;
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CONSTANT c_16 : NATURAL := 16;
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CONSTANT c_16 : NATURAL := 16;
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CONSTANT c_32 : NATURAL := 32;
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CONSTANT c_32 : NATURAL := 32;
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CONSTANT c_64 : NATURAL := 64;
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CONSTANT c_64 : NATURAL := 64;
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CONSTANT c_128 : NATURAL := 128;
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CONSTANT c_128 : NATURAL := 128;
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CONSTANT c_256 : NATURAL := 256;
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CONSTANT c_256 : NATURAL := 256;
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-- widths and sizes
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-- widths and sizes
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CONSTANT c_halfword_sz : NATURAL := 2;
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CONSTANT c_halfword_sz : NATURAL := 2;
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CONSTANT c_word_sz : NATURAL := 4;
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CONSTANT c_word_sz : NATURAL := 4;
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CONSTANT c_longword_sz : NATURAL := 8;
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CONSTANT c_longword_sz : NATURAL := 8;
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CONSTANT c_nibble_w : NATURAL := 4;
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CONSTANT c_nibble_w : NATURAL := 4;
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CONSTANT c_byte_w : NATURAL := 8;
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CONSTANT c_byte_w : NATURAL := 8;
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CONSTANT c_octet_w : NATURAL := 8;
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CONSTANT c_octet_w : NATURAL := 8;
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CONSTANT c_halfword_w : NATURAL := c_byte_w*c_halfword_sz;
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CONSTANT c_halfword_w : NATURAL := c_byte_w*c_halfword_sz;
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CONSTANT c_word_w : NATURAL := c_byte_w*c_word_sz;
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CONSTANT c_word_w : NATURAL := c_byte_w*c_word_sz;
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CONSTANT c_integer_w : NATURAL := 32; -- unfortunately VHDL integer type is limited to 32 bit values
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CONSTANT c_integer_w : NATURAL := 32; -- unfortunately VHDL integer type is limited to 32 bit values
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CONSTANT c_natural_w : NATURAL := c_integer_w-1; -- unfortunately VHDL natural type is limited to 31 bit values (0 and the positive subset of the VHDL integer type0
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CONSTANT c_natural_w : NATURAL := c_integer_w-1; -- unfortunately VHDL natural type is limited to 31 bit values (0 and the positive subset of the VHDL integer type0
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CONSTANT c_longword_w : NATURAL := c_byte_w*c_longword_sz;
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CONSTANT c_longword_w : NATURAL := c_byte_w*c_longword_sz;
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-- logic
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-- logic
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CONSTANT c_sl0 : STD_LOGIC := '0';
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CONSTANT c_sl0 : STD_LOGIC := '0';
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CONSTANT c_sl1 : STD_LOGIC := '1';
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CONSTANT c_sl1 : STD_LOGIC := '1';
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CONSTANT c_unsigned_0 : UNSIGNED(0 DOWNTO 0) := TO_UNSIGNED(0,1);
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CONSTANT c_unsigned_0 : UNSIGNED(0 DOWNTO 0) := TO_UNSIGNED(0,1);
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CONSTANT c_unsigned_1 : UNSIGNED(0 DOWNTO 0) := TO_UNSIGNED(1,1);
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CONSTANT c_unsigned_1 : UNSIGNED(0 DOWNTO 0) := TO_UNSIGNED(1,1);
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CONSTANT c_signed_0 : SIGNED(1 DOWNTO 0) := TO_SIGNED(0,2);
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CONSTANT c_signed_0 : SIGNED(1 DOWNTO 0) := TO_SIGNED(0,2);
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CONSTANT c_signed_1 : SIGNED(1 DOWNTO 0) := TO_SIGNED(1,2);
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CONSTANT c_signed_1 : SIGNED(1 DOWNTO 0) := TO_SIGNED(1,2);
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CONSTANT c_slv0 : STD_LOGIC_VECTOR(255 DOWNTO 0) := (OTHERS=>'0');
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CONSTANT c_slv0 : STD_LOGIC_VECTOR(255 DOWNTO 0) := (OTHERS=>'0');
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CONSTANT c_slv1 : STD_LOGIC_VECTOR(255 DOWNTO 0) := (OTHERS=>'1');
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CONSTANT c_slv1 : STD_LOGIC_VECTOR(255 DOWNTO 0) := (OTHERS=>'1');
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CONSTANT c_word_01 : STD_LOGIC_VECTOR(31 DOWNTO 0) := "01010101010101010101010101010101";
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CONSTANT c_word_01 : STD_LOGIC_VECTOR(31 DOWNTO 0) := "01010101010101010101010101010101";
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CONSTANT c_word_10 : STD_LOGIC_VECTOR(31 DOWNTO 0) := "10101010101010101010101010101010";
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CONSTANT c_word_10 : STD_LOGIC_VECTOR(31 DOWNTO 0) := "10101010101010101010101010101010";
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CONSTANT c_slv01 : STD_LOGIC_VECTOR(255 DOWNTO 0) := c_word_01 & c_word_01 & c_word_01 & c_word_01 & c_word_01 & c_word_01 & c_word_01 & c_word_01;
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CONSTANT c_slv01 : STD_LOGIC_VECTOR(255 DOWNTO 0) := c_word_01 & c_word_01 & c_word_01 & c_word_01 & c_word_01 & c_word_01 & c_word_01 & c_word_01;
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CONSTANT c_slv10 : STD_LOGIC_VECTOR(255 DOWNTO 0) := c_word_10 & c_word_10 & c_word_10 & c_word_10 & c_word_10 & c_word_10 & c_word_10 & c_word_10;
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CONSTANT c_slv10 : STD_LOGIC_VECTOR(255 DOWNTO 0) := c_word_10 & c_word_10 & c_word_10 & c_word_10 & c_word_10 & c_word_10 & c_word_10 & c_word_10;
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-- math
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-- math
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CONSTANT c_nof_complex : NATURAL := 2; -- Real and imaginary part of complex number
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CONSTANT c_nof_complex : NATURAL := 2; -- Real and imaginary part of complex number
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CONSTANT c_sign_w : NATURAL := 1; -- Sign bit, can be used to skip one of the double sign bits of a product
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CONSTANT c_sign_w : NATURAL := 1; -- Sign bit, can be used to skip one of the double sign bits of a product
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CONSTANT c_sum_of_prod_w : NATURAL := 1; -- Bit growth for sum of 2 products, can be used in case complex multiply has normalized real and imag inputs instead of normalized amplitude inputs
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CONSTANT c_sum_of_prod_w : NATURAL := 1; -- Bit growth for sum of 2 products, can be used in case complex multiply has normalized real and imag inputs instead of normalized amplitude inputs
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-- FF, block RAM, FIFO
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-- FF, block RAM, FIFO
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CONSTANT c_meta_delay_len : NATURAL := 3; -- default nof flipflops (FF) in meta stability recovery delay line (e.g. for clock domain crossing)
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CONSTANT c_meta_delay_len : NATURAL := 3; -- default nof flipflops (FF) in meta stability recovery delay line (e.g. for clock domain crossing)
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CONSTANT c_meta_fifo_depth : NATURAL := 16; -- default use 16 word deep FIFO to cross clock domain, typically > 2*c_meta_delay_len or >~ 8 is enough
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CONSTANT c_meta_fifo_depth : NATURAL := 16; -- default use 16 word deep FIFO to cross clock domain, typically > 2*c_meta_delay_len or >~ 8 is enough
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CONSTANT c_bram_m9k_nof_bits : NATURAL := 1024*9; -- size of 1 Altera M9K block RAM in bits
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CONSTANT c_bram_m9k_nof_bits : NATURAL := 1024*9; -- size of 1 Altera M9K block RAM in bits
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CONSTANT c_bram_m9k_max_w : NATURAL := 36; -- maximum width of 1 Altera M9K block RAM, so the size is then 256 words of 36 bits
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CONSTANT c_bram_m9k_max_w : NATURAL := 36; -- maximum width of 1 Altera M9K block RAM, so the size is then 256 words of 36 bits
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CONSTANT c_bram_m9k_fifo_depth : NATURAL := c_bram_m9k_nof_bits/c_bram_m9k_max_w; -- using a smaller FIFO depth than this leaves part of the RAM unused
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CONSTANT c_bram_m9k_fifo_depth : NATURAL := c_bram_m9k_nof_bits/c_bram_m9k_max_w; -- using a smaller FIFO depth than this leaves part of the RAM unused
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CONSTANT c_fifo_afull_margin : NATURAL := 4; -- default or minimal FIFO almost full margin
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CONSTANT c_fifo_afull_margin : NATURAL := 4; -- default or minimal FIFO almost full margin
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-- DSP
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-- DSP
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CONSTANT c_dsp_mult_w : NATURAL := 18; -- Width of the embedded multipliers in Stratix IV
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CONSTANT c_dsp_mult_w : NATURAL := 18; -- Width of the embedded multipliers in Stratix IV
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-- TYPE DECLARATIONS --------------------------------------------------------
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-- TYPE DECLARATIONS --------------------------------------------------------
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TYPE t_boolean_arr IS ARRAY (INTEGER RANGE <>) OF BOOLEAN; -- INTEGER left index starts default at -2**31
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TYPE t_boolean_arr IS ARRAY (INTEGER RANGE <>) OF BOOLEAN; -- INTEGER left index starts default at -2**31
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TYPE t_integer_arr IS ARRAY (INTEGER RANGE <>) OF INTEGER; -- INTEGER left index starts default at -2**31
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TYPE t_integer_arr IS ARRAY (INTEGER RANGE <>) OF INTEGER; -- INTEGER left index starts default at -2**31
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TYPE t_natural_arr IS ARRAY (INTEGER RANGE <>) OF NATURAL; -- INTEGER left index starts default at -2**31
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TYPE t_natural_arr IS ARRAY (INTEGER RANGE <>) OF NATURAL; -- INTEGER left index starts default at -2**31
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TYPE t_nat_boolean_arr IS ARRAY (NATURAL RANGE <>) OF BOOLEAN; -- NATURAL left index starts default at 0
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TYPE t_nat_boolean_arr IS ARRAY (NATURAL RANGE <>) OF BOOLEAN; -- NATURAL left index starts default at 0
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TYPE t_nat_integer_arr IS ARRAY (NATURAL RANGE <>) OF INTEGER; -- NATURAL left index starts default at 0
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TYPE t_nat_integer_arr IS ARRAY (NATURAL RANGE <>) OF INTEGER; -- NATURAL left index starts default at 0
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TYPE t_nat_natural_arr IS ARRAY (NATURAL RANGE <>) OF NATURAL; -- NATURAL left index starts default at 0
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TYPE t_nat_natural_arr IS ARRAY (NATURAL RANGE <>) OF NATURAL; -- NATURAL left index starts default at 0
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TYPE t_sl_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC;
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TYPE t_sl_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC;
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TYPE t_slv_1_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(0 DOWNTO 0);
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TYPE t_slv_1_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(0 DOWNTO 0);
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TYPE t_slv_2_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(1 DOWNTO 0);
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TYPE t_slv_2_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(1 DOWNTO 0);
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TYPE t_slv_4_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(3 DOWNTO 0);
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TYPE t_slv_4_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(3 DOWNTO 0);
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TYPE t_slv_8_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(7 DOWNTO 0);
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TYPE t_slv_8_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(7 DOWNTO 0);
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TYPE t_slv_12_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(11 DOWNTO 0);
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TYPE t_slv_12_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(11 DOWNTO 0);
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TYPE t_slv_16_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(15 DOWNTO 0);
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TYPE t_slv_16_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(15 DOWNTO 0);
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TYPE t_slv_18_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(17 DOWNTO 0);
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TYPE t_slv_18_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(17 DOWNTO 0);
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TYPE t_slv_24_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(23 DOWNTO 0);
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TYPE t_slv_24_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(23 DOWNTO 0);
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TYPE t_slv_32_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(31 DOWNTO 0);
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TYPE t_slv_32_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(31 DOWNTO 0);
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TYPE t_slv_44_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(43 DOWNTO 0);
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TYPE t_slv_44_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(43 DOWNTO 0);
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TYPE t_slv_48_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(47 DOWNTO 0);
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TYPE t_slv_48_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(47 DOWNTO 0);
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TYPE t_slv_64_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(63 DOWNTO 0);
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TYPE t_slv_64_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(63 DOWNTO 0);
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TYPE t_slv_128_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(127 DOWNTO 0);
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TYPE t_slv_128_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(127 DOWNTO 0);
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TYPE t_slv_256_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(255 DOWNTO 0);
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TYPE t_slv_256_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(255 DOWNTO 0);
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TYPE t_slv_512_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(511 DOWNTO 0);
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TYPE t_slv_512_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(511 DOWNTO 0);
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TYPE t_slv_1024_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(1023 DOWNTO 0);
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TYPE t_slv_1024_arr IS ARRAY (INTEGER RANGE <>) OF STD_LOGIC_VECTOR(1023 DOWNTO 0);
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CONSTANT c_boolean_arr : t_boolean_arr := (TRUE, FALSE); -- array all possible values that can be iterated over
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CONSTANT c_boolean_arr : t_boolean_arr := (TRUE, FALSE); -- array all possible values that can be iterated over
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CONSTANT c_nat_boolean_arr : t_nat_boolean_arr := (TRUE, FALSE); -- array all possible values that can be iterated over
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CONSTANT c_nat_boolean_arr : t_nat_boolean_arr := (TRUE, FALSE); -- array all possible values that can be iterated over
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TYPE t_integer_matrix IS ARRAY (INTEGER RANGE <>, INTEGER RANGE <>) OF INTEGER;
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TYPE t_integer_matrix IS ARRAY (INTEGER RANGE <>, INTEGER RANGE <>) OF INTEGER;
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TYPE t_boolean_matrix IS ARRAY (INTEGER RANGE <>, INTEGER RANGE <>) OF BOOLEAN;
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TYPE t_boolean_matrix IS ARRAY (INTEGER RANGE <>, INTEGER RANGE <>) OF BOOLEAN;
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TYPE t_sl_matrix IS ARRAY (INTEGER RANGE <>, INTEGER RANGE <>) OF STD_LOGIC;
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TYPE t_sl_matrix IS ARRAY (INTEGER RANGE <>, INTEGER RANGE <>) OF STD_LOGIC;
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TYPE t_slv_8_matrix IS ARRAY (INTEGER RANGE <>, INTEGER RANGE <>) OF STD_LOGIC_VECTOR(7 DOWNTO 0);
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TYPE t_slv_8_matrix IS ARRAY (INTEGER RANGE <>, INTEGER RANGE <>) OF STD_LOGIC_VECTOR(7 DOWNTO 0);
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TYPE t_slv_16_matrix IS ARRAY (INTEGER RANGE <>, INTEGER RANGE <>) OF STD_LOGIC_VECTOR(15 DOWNTO 0);
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TYPE t_slv_16_matrix IS ARRAY (INTEGER RANGE <>, INTEGER RANGE <>) OF STD_LOGIC_VECTOR(15 DOWNTO 0);
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TYPE t_slv_32_matrix IS ARRAY (INTEGER RANGE <>, INTEGER RANGE <>) OF STD_LOGIC_VECTOR(31 DOWNTO 0);
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TYPE t_slv_32_matrix IS ARRAY (INTEGER RANGE <>, INTEGER RANGE <>) OF STD_LOGIC_VECTOR(31 DOWNTO 0);
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TYPE t_slv_64_matrix IS ARRAY (INTEGER RANGE <>, INTEGER RANGE <>) OF STD_LOGIC_VECTOR(63 DOWNTO 0);
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TYPE t_slv_64_matrix IS ARRAY (INTEGER RANGE <>, INTEGER RANGE <>) OF STD_LOGIC_VECTOR(63 DOWNTO 0);
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TYPE t_natural_2arr_2 IS ARRAY (INTEGER RANGE <>) OF t_natural_arr(1 DOWNTO 0);
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TYPE t_natural_2arr_2 IS ARRAY (INTEGER RANGE <>) OF t_natural_arr(1 DOWNTO 0);
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-- STRUCTURE DECLARATIONS ---------------------------------------------------
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-- STRUCTURE DECLARATIONS ---------------------------------------------------
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-- Clock and Reset
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-- Clock and Reset
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--
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--
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-- . rst = Reset. Can be used asynchronously to take effect immediately
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-- . rst = Reset. Can be used asynchronously to take effect immediately
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-- when used before the clk'EVENT section. May also be used as
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-- when used before the clk'EVENT section. May also be used as
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-- synchronous reset using it as first condition in the clk'EVENT
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-- synchronous reset using it as first condition in the clk'EVENT
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-- section. As synchronous reset it requires clock activity to take
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-- section. As synchronous reset it requires clock activity to take
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-- effect. A synchronous rst may or may not depend on clken,
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-- effect. A synchronous rst may or may not depend on clken,
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-- however typically rst should take priority over clken.
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-- however typically rst should take priority over clken.
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-- . clk = Clock. Used in clk'EVENT line via rising_edge(clk) or sometimes
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-- . clk = Clock. Used in clk'EVENT line via rising_edge(clk) or sometimes
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-- as falling_edge(clk).
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-- as falling_edge(clk).
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-- . clken = Clock Enable. Used for the whole clk'EVENT section.
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-- . clken = Clock Enable. Used for the whole clk'EVENT section.
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TYPE t_sys_rce IS RECORD
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TYPE t_sys_rce IS RECORD
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rst : STD_LOGIC;
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rst : STD_LOGIC;
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clk : STD_LOGIC;
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clk : STD_LOGIC;
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clken : STD_LOGIC; -- := '1';
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clken : STD_LOGIC; -- := '1';
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END RECORD;
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END RECORD;
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TYPE t_sys_ce IS RECORD
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TYPE t_sys_ce IS RECORD
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clk : STD_LOGIC;
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clk : STD_LOGIC;
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clken : STD_LOGIC; -- := '1';
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clken : STD_LOGIC; -- := '1';
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END RECORD;
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END RECORD;
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-- FUNCTION DECLARATIONS ----------------------------------------------------
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-- FUNCTION DECLARATIONS ----------------------------------------------------
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-- All functions assume [high downto low] input ranges
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-- All functions assume [high downto low] input ranges
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FUNCTION pow2(n : NATURAL) RETURN NATURAL; -- = 2**n
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FUNCTION pow2(n : NATURAL) RETURN NATURAL; -- = 2**n
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FUNCTION ceil_pow2(n : INTEGER) RETURN NATURAL; -- = 2**n, returns 1 for n<0
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FUNCTION ceil_pow2(n : INTEGER) RETURN NATURAL; -- = 2**n, returns 1 for n<0
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FUNCTION true_log2(n : NATURAL) RETURN NATURAL; -- true_log2(n) = log2(n)
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FUNCTION true_log2(n : NATURAL) RETURN NATURAL; -- true_log2(n) = log2(n)
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FUNCTION ceil_log2(n : NATURAL) RETURN NATURAL; -- ceil_log2(n) = log2(n), but force ceil_log2(1) = 1
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FUNCTION ceil_log2(n : NATURAL) RETURN NATURAL; -- ceil_log2(n) = log2(n), but force ceil_log2(1) = 1
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FUNCTION floor_log10(n : NATURAL) RETURN NATURAL;
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FUNCTION floor_log10(n : NATURAL) RETURN NATURAL;
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FUNCTION is_pow2(n : NATURAL) RETURN BOOLEAN; -- return TRUE when n is a power of 2, so 0, 1, 2, 4, 8, 16, ...
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FUNCTION is_pow2(n : NATURAL) RETURN BOOLEAN; -- return TRUE when n is a power of 2, so 0, 1, 2, 4, 8, 16, ...
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FUNCTION true_log_pow2(n : NATURAL) RETURN NATURAL; -- 2**true_log2(n), return power of 2 that is >= n
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FUNCTION true_log_pow2(n : NATURAL) RETURN NATURAL; -- 2**true_log2(n), return power of 2 that is >= n
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FUNCTION ratio( n, d : NATURAL) RETURN NATURAL; -- return n/d when n MOD d = 0 else return 0, so ratio * d = n only when integer ratio > 0
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FUNCTION ratio( n, d : NATURAL) RETURN NATURAL; -- return n/d when n MOD d = 0 else return 0, so ratio * d = n only when integer ratio > 0
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FUNCTION ratio2(n, m : NATURAL) RETURN NATURAL; -- return integer ratio of n/m or m/n, whichever is the largest
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FUNCTION ratio2(n, m : NATURAL) RETURN NATURAL; -- return integer ratio of n/m or m/n, whichever is the largest
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FUNCTION ceil_div( n, d : NATURAL) RETURN NATURAL; -- ceil_div = n/d + (n MOD d)/=0
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FUNCTION ceil_div( n, d : NATURAL) RETURN NATURAL; -- ceil_div = n/d + (n MOD d)/=0
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FUNCTION ceil_value( n, d : NATURAL) RETURN NATURAL; -- ceil_value = ceil_div(n, d) * d
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FUNCTION ceil_value( n, d : NATURAL) RETURN NATURAL; -- ceil_value = ceil_div(n, d) * d
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FUNCTION floor_value(n, d : NATURAL) RETURN NATURAL; -- floor_value = (n/d) * d
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FUNCTION floor_value(n, d : NATURAL) RETURN NATURAL; -- floor_value = (n/d) * d
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FUNCTION ceil_div( n : UNSIGNED; d: NATURAL) RETURN UNSIGNED;
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FUNCTION ceil_div( n : UNSIGNED; d: NATURAL) RETURN UNSIGNED;
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FUNCTION ceil_value( n : UNSIGNED; d: NATURAL) RETURN UNSIGNED;
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FUNCTION ceil_value( n : UNSIGNED; d: NATURAL) RETURN UNSIGNED;
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FUNCTION floor_value(n : UNSIGNED; d: NATURAL) RETURN UNSIGNED;
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FUNCTION floor_value(n : UNSIGNED; d: NATURAL) RETURN UNSIGNED;
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FUNCTION slv(n: IN STD_LOGIC) RETURN STD_LOGIC_VECTOR; -- standard logic to 1 element standard logic vector
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FUNCTION slv(n: IN STD_LOGIC) RETURN STD_LOGIC_VECTOR; -- standard logic to 1 element standard logic vector
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FUNCTION sl( n: IN STD_LOGIC_VECTOR) RETURN STD_LOGIC; -- 1 element standard logic vector to standard logic
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FUNCTION sl( n: IN STD_LOGIC_VECTOR) RETURN STD_LOGIC; -- 1 element standard logic vector to standard logic
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FUNCTION to_natural_arr(n : t_integer_arr; to_zero : BOOLEAN) RETURN t_natural_arr; -- if to_zero=TRUE then negative numbers are forced to zero, otherwise they will give a compile range error
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FUNCTION to_natural_arr(n : t_integer_arr; to_zero : BOOLEAN) RETURN t_natural_arr; -- if to_zero=TRUE then negative numbers are forced to zero, otherwise they will give a compile range error
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FUNCTION to_natural_arr(n : t_nat_natural_arr) RETURN t_natural_arr;
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FUNCTION to_natural_arr(n : t_nat_natural_arr) RETURN t_natural_arr;
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FUNCTION to_integer_arr(n : t_natural_arr) RETURN t_integer_arr;
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FUNCTION to_integer_arr(n : t_natural_arr) RETURN t_integer_arr;
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FUNCTION to_integer_arr(n : t_nat_natural_arr) RETURN t_integer_arr;
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FUNCTION to_integer_arr(n : t_nat_natural_arr) RETURN t_integer_arr;
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FUNCTION to_slv_32_arr( n : t_integer_arr) RETURN t_slv_32_arr;
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FUNCTION to_slv_32_arr( n : t_integer_arr) RETURN t_slv_32_arr;
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FUNCTION to_slv_32_arr( n : t_natural_arr) RETURN t_slv_32_arr;
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FUNCTION to_slv_32_arr( n : t_natural_arr) RETURN t_slv_32_arr;
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FUNCTION vector_tree(slv : STD_LOGIC_VECTOR; operation : STRING) RETURN STD_LOGIC; -- Core operation tree function for vector "AND", "OR", "XOR"
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FUNCTION vector_tree(slv : STD_LOGIC_VECTOR; operation : STRING) RETURN STD_LOGIC; -- Core operation tree function for vector "AND", "OR", "XOR"
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FUNCTION vector_and(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC; -- '1' when all slv bits are '1' else '0'
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FUNCTION vector_and(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC; -- '1' when all slv bits are '1' else '0'
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FUNCTION vector_or( slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC; -- '0' when all slv bits are '0' else '1'
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FUNCTION vector_or( slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC; -- '0' when all slv bits are '0' else '1'
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FUNCTION vector_xor(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC; -- '1' when the slv has an odd number of '1' bits else '0'
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FUNCTION vector_xor(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC; -- '1' when the slv has an odd number of '1' bits else '0'
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FUNCTION vector_one_hot(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR; -- Returns slv when it contains one hot bit, else returns 0.
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FUNCTION vector_one_hot(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR; -- Returns slv when it contains one hot bit, else returns 0.
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FUNCTION andv(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC; -- alias of vector_and
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FUNCTION andv(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC; -- alias of vector_and
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FUNCTION orv( slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC; -- alias of vector_or
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FUNCTION orv( slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC; -- alias of vector_or
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FUNCTION xorv(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC; -- alias of vector_xor
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FUNCTION xorv(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC; -- alias of vector_xor
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FUNCTION matrix_and(mat : t_sl_matrix; wi, wj : NATURAL) RETURN STD_LOGIC; -- '1' when all matrix bits are '1' else '0'
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FUNCTION matrix_and(mat : t_sl_matrix; wi, wj : NATURAL) RETURN STD_LOGIC; -- '1' when all matrix bits are '1' else '0'
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FUNCTION matrix_or( mat : t_sl_matrix; wi, wj : NATURAL) RETURN STD_LOGIC; -- '0' when all matrix bits are '0' else '1'
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FUNCTION matrix_or( mat : t_sl_matrix; wi, wj : NATURAL) RETURN STD_LOGIC; -- '0' when all matrix bits are '0' else '1'
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FUNCTION smallest(n, m : INTEGER) RETURN INTEGER;
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FUNCTION smallest(n, m : INTEGER) RETURN INTEGER;
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FUNCTION smallest(n, m, l : INTEGER) RETURN INTEGER;
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FUNCTION smallest(n, m, l : INTEGER) RETURN INTEGER;
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FUNCTION smallest(n : t_natural_arr) RETURN NATURAL;
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FUNCTION smallest(n : t_natural_arr) RETURN NATURAL;
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FUNCTION largest(n, m : INTEGER) RETURN INTEGER;
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FUNCTION largest(n, m : INTEGER) RETURN INTEGER;
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FUNCTION largest(n : t_natural_arr) RETURN NATURAL;
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FUNCTION largest(n : t_natural_arr) RETURN NATURAL;
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FUNCTION func_sum( n : t_natural_arr) RETURN NATURAL; -- sum of all elements in array
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FUNCTION func_sum( n : t_natural_arr) RETURN NATURAL; -- sum of all elements in array
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FUNCTION func_sum( n : t_nat_natural_arr) RETURN NATURAL;
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FUNCTION func_sum( n : t_nat_natural_arr) RETURN NATURAL;
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FUNCTION func_product(n : t_natural_arr) RETURN NATURAL; -- product of all elements in array
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FUNCTION func_product(n : t_natural_arr) RETURN NATURAL; -- product of all elements in array
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FUNCTION func_product(n : t_nat_natural_arr) RETURN NATURAL;
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FUNCTION func_product(n : t_nat_natural_arr) RETURN NATURAL;
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FUNCTION "+" (L, R: t_natural_arr) RETURN t_natural_arr; -- element wise sum
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FUNCTION "+" (L, R: t_natural_arr) RETURN t_natural_arr; -- element wise sum
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FUNCTION "+" (L : t_natural_arr; R : INTEGER) RETURN t_natural_arr; -- element wise sum
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FUNCTION "+" (L : t_natural_arr; R : INTEGER) RETURN t_natural_arr; -- element wise sum
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FUNCTION "+" (L : INTEGER; R : t_natural_arr) RETURN t_natural_arr; -- element wise sum
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FUNCTION "+" (L : INTEGER; R : t_natural_arr) RETURN t_natural_arr; -- element wise sum
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FUNCTION "-" (L, R: t_natural_arr) RETURN t_natural_arr; -- element wise subtract
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FUNCTION "-" (L, R: t_natural_arr) RETURN t_natural_arr; -- element wise subtract
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FUNCTION "-" (L, R: t_natural_arr) RETURN t_integer_arr; -- element wise subtract, support negative result
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FUNCTION "-" (L, R: t_natural_arr) RETURN t_integer_arr; -- element wise subtract, support negative result
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FUNCTION "-" (L : t_natural_arr; R : INTEGER) RETURN t_natural_arr; -- element wise subtract
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FUNCTION "-" (L : t_natural_arr; R : INTEGER) RETURN t_natural_arr; -- element wise subtract
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FUNCTION "-" (L : INTEGER; R : t_natural_arr) RETURN t_natural_arr; -- element wise subtract
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FUNCTION "-" (L : INTEGER; R : t_natural_arr) RETURN t_natural_arr; -- element wise subtract
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FUNCTION "*" (L, R: t_natural_arr) RETURN t_natural_arr; -- element wise product
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FUNCTION "*" (L, R: t_natural_arr) RETURN t_natural_arr; -- element wise product
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FUNCTION "*" (L : t_natural_arr; R : NATURAL) RETURN t_natural_arr; -- element wise product
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FUNCTION "*" (L : t_natural_arr; R : NATURAL) RETURN t_natural_arr; -- element wise product
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FUNCTION "*" (L : NATURAL; R : t_natural_arr) RETURN t_natural_arr; -- element wise product
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FUNCTION "*" (L : NATURAL; R : t_natural_arr) RETURN t_natural_arr; -- element wise product
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FUNCTION "/" (L, R: t_natural_arr) RETURN t_natural_arr; -- element wise division
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FUNCTION "/" (L, R: t_natural_arr) RETURN t_natural_arr; -- element wise division
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FUNCTION "/" (L : t_natural_arr; R : POSITIVE) RETURN t_natural_arr; -- element wise division
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FUNCTION "/" (L : t_natural_arr; R : POSITIVE) RETURN t_natural_arr; -- element wise division
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FUNCTION "/" (L : NATURAL; R : t_natural_arr) RETURN t_natural_arr; -- element wise division
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FUNCTION "/" (L : NATURAL; R : t_natural_arr) RETURN t_natural_arr; -- element wise division
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FUNCTION is_true(a : STD_LOGIC) RETURN BOOLEAN;
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FUNCTION is_true(a : STD_LOGIC) RETURN BOOLEAN;
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FUNCTION is_true(a : STD_LOGIC) RETURN NATURAL;
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FUNCTION is_true(a : STD_LOGIC) RETURN NATURAL;
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FUNCTION is_true(a : BOOLEAN) RETURN STD_LOGIC;
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FUNCTION is_true(a : BOOLEAN) RETURN STD_LOGIC;
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FUNCTION is_true(a : BOOLEAN) RETURN NATURAL;
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FUNCTION is_true(a : BOOLEAN) RETURN NATURAL;
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FUNCTION is_true(a : INTEGER) RETURN BOOLEAN; -- also covers NATURAL because it is a subtype of INTEGER
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FUNCTION is_true(a : INTEGER) RETURN BOOLEAN; -- also covers NATURAL because it is a subtype of INTEGER
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FUNCTION is_true(a : INTEGER) RETURN STD_LOGIC; -- also covers NATURAL because it is a subtype of INTEGER
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FUNCTION is_true(a : INTEGER) RETURN STD_LOGIC; -- also covers NATURAL because it is a subtype of INTEGER
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FUNCTION sel_a_b(sel, a, b : BOOLEAN) RETURN BOOLEAN;
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FUNCTION sel_a_b(sel, a, b : BOOLEAN) RETURN BOOLEAN;
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FUNCTION sel_a_b(sel, a, b : INTEGER) RETURN INTEGER;
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FUNCTION sel_a_b(sel, a, b : INTEGER) RETURN INTEGER;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : INTEGER) RETURN INTEGER;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : INTEGER) RETURN INTEGER;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : REAL) RETURN REAL;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : REAL) RETURN REAL;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : STD_LOGIC) RETURN STD_LOGIC;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : STD_LOGIC) RETURN STD_LOGIC;
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FUNCTION sel_a_b(sel : INTEGER; a, b : STD_LOGIC) RETURN STD_LOGIC;
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FUNCTION sel_a_b(sel : INTEGER; a, b : STD_LOGIC) RETURN STD_LOGIC;
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FUNCTION sel_a_b(sel : INTEGER; a, b : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR;
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FUNCTION sel_a_b(sel : INTEGER; a, b : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : SIGNED) RETURN SIGNED;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : SIGNED) RETURN SIGNED;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : UNSIGNED) RETURN UNSIGNED;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : UNSIGNED) RETURN UNSIGNED;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : t_integer_arr) RETURN t_integer_arr;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : t_integer_arr) RETURN t_integer_arr;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : t_natural_arr) RETURN t_natural_arr;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : t_natural_arr) RETURN t_natural_arr;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : t_nat_integer_arr) RETURN t_nat_integer_arr;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : t_nat_integer_arr) RETURN t_nat_integer_arr;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : t_nat_natural_arr) RETURN t_nat_natural_arr;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : t_nat_natural_arr) RETURN t_nat_natural_arr;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : STRING) RETURN STRING;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : STRING) RETURN STRING;
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FUNCTION sel_a_b(sel : INTEGER; a, b : STRING) RETURN STRING;
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FUNCTION sel_a_b(sel : INTEGER; a, b : STRING) RETURN STRING;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : TIME) RETURN TIME;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : TIME) RETURN TIME;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : SEVERITY_LEVEL) RETURN SEVERITY_LEVEL;
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FUNCTION sel_a_b(sel : BOOLEAN; a, b : SEVERITY_LEVEL) RETURN SEVERITY_LEVEL;
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-- sel_n() index sel = 0, 1, 2, ... will return a, b, c, ...
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-- sel_n() index sel = 0, 1, 2, ... will return a, b, c, ...
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FUNCTION sel_n(sel : NATURAL; a, b, c : BOOLEAN) RETURN BOOLEAN; -- 3
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FUNCTION sel_n(sel : NATURAL; a, b, c : BOOLEAN) RETURN BOOLEAN; -- 3
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FUNCTION sel_n(sel : NATURAL; a, b, c, d : BOOLEAN) RETURN BOOLEAN; -- 4
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FUNCTION sel_n(sel : NATURAL; a, b, c, d : BOOLEAN) RETURN BOOLEAN; -- 4
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e : BOOLEAN) RETURN BOOLEAN; -- 5
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e : BOOLEAN) RETURN BOOLEAN; -- 5
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f : BOOLEAN) RETURN BOOLEAN; -- 6
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f : BOOLEAN) RETURN BOOLEAN; -- 6
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g : BOOLEAN) RETURN BOOLEAN; -- 7
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g : BOOLEAN) RETURN BOOLEAN; -- 7
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h : BOOLEAN) RETURN BOOLEAN; -- 8
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h : BOOLEAN) RETURN BOOLEAN; -- 8
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i : BOOLEAN) RETURN BOOLEAN; -- 9
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i : BOOLEAN) RETURN BOOLEAN; -- 9
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i, j : BOOLEAN) RETURN BOOLEAN; -- 10
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i, j : BOOLEAN) RETURN BOOLEAN; -- 10
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FUNCTION sel_n(sel : NATURAL; a, b, c : INTEGER) RETURN INTEGER; -- 3
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FUNCTION sel_n(sel : NATURAL; a, b, c : INTEGER) RETURN INTEGER; -- 3
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FUNCTION sel_n(sel : NATURAL; a, b, c, d : INTEGER) RETURN INTEGER; -- 4
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FUNCTION sel_n(sel : NATURAL; a, b, c, d : INTEGER) RETURN INTEGER; -- 4
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e : INTEGER) RETURN INTEGER; -- 5
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e : INTEGER) RETURN INTEGER; -- 5
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f : INTEGER) RETURN INTEGER; -- 6
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f : INTEGER) RETURN INTEGER; -- 6
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g : INTEGER) RETURN INTEGER; -- 7
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g : INTEGER) RETURN INTEGER; -- 7
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h : INTEGER) RETURN INTEGER; -- 8
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h : INTEGER) RETURN INTEGER; -- 8
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i : INTEGER) RETURN INTEGER; -- 9
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i : INTEGER) RETURN INTEGER; -- 9
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i, j : INTEGER) RETURN INTEGER; -- 10
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i, j : INTEGER) RETURN INTEGER; -- 10
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FUNCTION sel_n(sel : NATURAL; a, b : STRING) RETURN STRING; -- 2
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FUNCTION sel_n(sel : NATURAL; a, b : STRING) RETURN STRING; -- 2
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FUNCTION sel_n(sel : NATURAL; a, b, c : STRING) RETURN STRING; -- 3
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FUNCTION sel_n(sel : NATURAL; a, b, c : STRING) RETURN STRING; -- 3
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FUNCTION sel_n(sel : NATURAL; a, b, c, d : STRING) RETURN STRING; -- 4
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FUNCTION sel_n(sel : NATURAL; a, b, c, d : STRING) RETURN STRING; -- 4
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e : STRING) RETURN STRING; -- 5
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e : STRING) RETURN STRING; -- 5
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f : STRING) RETURN STRING; -- 6
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f : STRING) RETURN STRING; -- 6
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g : STRING) RETURN STRING; -- 7
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g : STRING) RETURN STRING; -- 7
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h : STRING) RETURN STRING; -- 8
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h : STRING) RETURN STRING; -- 8
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i : STRING) RETURN STRING; -- 9
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i : STRING) RETURN STRING; -- 9
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i, j : STRING) RETURN STRING; -- 10
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FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i, j : STRING) RETURN STRING; -- 10
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FUNCTION array_init(init : STD_LOGIC; nof : NATURAL) RETURN STD_LOGIC_VECTOR; -- useful to init a unconstrained array of size 1
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FUNCTION array_init(init : STD_LOGIC; nof : NATURAL) RETURN STD_LOGIC_VECTOR; -- useful to init a unconstrained array of size 1
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FUNCTION array_init(init, nof : NATURAL) RETURN t_natural_arr; -- useful to init a unconstrained array of size 1
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FUNCTION array_init(init, nof : NATURAL) RETURN t_natural_arr; -- useful to init a unconstrained array of size 1
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FUNCTION array_init(init, nof : NATURAL) RETURN t_nat_natural_arr; -- useful to init a unconstrained array of size 1
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FUNCTION array_init(init, nof : NATURAL) RETURN t_nat_natural_arr; -- useful to init a unconstrained array of size 1
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FUNCTION array_init(init, nof, incr : NATURAL) RETURN t_natural_arr; -- useful to init an array with incrementing numbers
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FUNCTION array_init(init, nof, incr : NATURAL) RETURN t_natural_arr; -- useful to init an array with incrementing numbers
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FUNCTION array_init(init, nof, incr : NATURAL) RETURN t_nat_natural_arr;
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FUNCTION array_init(init, nof, incr : NATURAL) RETURN t_nat_natural_arr;
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FUNCTION array_init(init, nof, incr : INTEGER) RETURN t_slv_16_arr;
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FUNCTION array_init(init, nof, incr : INTEGER) RETURN t_slv_16_arr;
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FUNCTION array_init(init, nof, incr : INTEGER) RETURN t_slv_32_arr;
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FUNCTION array_init(init, nof, incr : INTEGER) RETURN t_slv_32_arr;
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FUNCTION array_init(init, nof, width : NATURAL) RETURN STD_LOGIC_VECTOR; -- useful to init an unconstrained std_logic_vector with repetitive content
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FUNCTION array_init(init, nof, width : NATURAL) RETURN STD_LOGIC_VECTOR; -- useful to init an unconstrained std_logic_vector with repetitive content
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FUNCTION array_init(init, nof, width, incr : NATURAL) RETURN STD_LOGIC_VECTOR; -- useful to init an unconstrained std_logic_vector with incrementing content
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FUNCTION array_init(init, nof, width, incr : NATURAL) RETURN STD_LOGIC_VECTOR; -- useful to init an unconstrained std_logic_vector with incrementing content
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FUNCTION array_sinit(init : INTEGER; nof, width : NATURAL) RETURN STD_LOGIC_VECTOR; -- useful to init an unconstrained std_logic_vector with repetitive content
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FUNCTION array_sinit(init : INTEGER; nof, width : NATURAL) RETURN STD_LOGIC_VECTOR; -- useful to init an unconstrained std_logic_vector with repetitive content
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FUNCTION init_slv_64_matrix(nof_a, nof_b, k : INTEGER) RETURN t_slv_64_matrix; -- initialize all elements in t_slv_64_matrix to value k
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FUNCTION init_slv_64_matrix(nof_a, nof_b, k : INTEGER) RETURN t_slv_64_matrix; -- initialize all elements in t_slv_64_matrix to value k
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-- Concatenate two or more STD_LOGIC_VECTORs into a single STD_LOGIC_VECTOR or extract one of them from a concatenated STD_LOGIC_VECTOR
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-- Concatenate two or more STD_LOGIC_VECTORs into a single STD_LOGIC_VECTOR or extract one of them from a concatenated STD_LOGIC_VECTOR
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FUNCTION func_slv_concat( use_a, use_b, use_c, use_d, use_e, use_f, use_g : BOOLEAN; a, b, c, d, e, f, g : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_concat( use_a, use_b, use_c, use_d, use_e, use_f, use_g : BOOLEAN; a, b, c, d, e, f, g : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_concat( use_a, use_b, use_c, use_d, use_e, use_f : BOOLEAN; a, b, c, d, e, f : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_concat( use_a, use_b, use_c, use_d, use_e, use_f : BOOLEAN; a, b, c, d, e, f : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_concat( use_a, use_b, use_c, use_d, use_e : BOOLEAN; a, b, c, d, e : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_concat( use_a, use_b, use_c, use_d, use_e : BOOLEAN; a, b, c, d, e : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_concat( use_a, use_b, use_c, use_d : BOOLEAN; a, b, c, d : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_concat( use_a, use_b, use_c, use_d : BOOLEAN; a, b, c, d : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_concat( use_a, use_b, use_c : BOOLEAN; a, b, c : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_concat( use_a, use_b, use_c : BOOLEAN; a, b, c : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_concat( use_a, use_b : BOOLEAN; a, b : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_concat( use_a, use_b : BOOLEAN; a, b : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_concat_w(use_a, use_b, use_c, use_d, use_e, use_f, use_g : BOOLEAN; a_w, b_w, c_w, d_w, e_w, f_w, g_w : NATURAL) RETURN NATURAL;
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FUNCTION func_slv_concat_w(use_a, use_b, use_c, use_d, use_e, use_f, use_g : BOOLEAN; a_w, b_w, c_w, d_w, e_w, f_w, g_w : NATURAL) RETURN NATURAL;
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FUNCTION func_slv_concat_w(use_a, use_b, use_c, use_d, use_e, use_f : BOOLEAN; a_w, b_w, c_w, d_w, e_w, f_w : NATURAL) RETURN NATURAL;
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FUNCTION func_slv_concat_w(use_a, use_b, use_c, use_d, use_e, use_f : BOOLEAN; a_w, b_w, c_w, d_w, e_w, f_w : NATURAL) RETURN NATURAL;
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FUNCTION func_slv_concat_w(use_a, use_b, use_c, use_d, use_e : BOOLEAN; a_w, b_w, c_w, d_w, e_w : NATURAL) RETURN NATURAL;
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FUNCTION func_slv_concat_w(use_a, use_b, use_c, use_d, use_e : BOOLEAN; a_w, b_w, c_w, d_w, e_w : NATURAL) RETURN NATURAL;
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FUNCTION func_slv_concat_w(use_a, use_b, use_c, use_d : BOOLEAN; a_w, b_w, c_w, d_w : NATURAL) RETURN NATURAL;
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FUNCTION func_slv_concat_w(use_a, use_b, use_c, use_d : BOOLEAN; a_w, b_w, c_w, d_w : NATURAL) RETURN NATURAL;
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FUNCTION func_slv_concat_w(use_a, use_b, use_c : BOOLEAN; a_w, b_w, c_w : NATURAL) RETURN NATURAL;
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FUNCTION func_slv_concat_w(use_a, use_b, use_c : BOOLEAN; a_w, b_w, c_w : NATURAL) RETURN NATURAL;
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FUNCTION func_slv_concat_w(use_a, use_b : BOOLEAN; a_w, b_w : NATURAL) RETURN NATURAL;
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FUNCTION func_slv_concat_w(use_a, use_b : BOOLEAN; a_w, b_w : NATURAL) RETURN NATURAL;
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FUNCTION func_slv_extract( use_a, use_b, use_c, use_d, use_e, use_f, use_g : BOOLEAN; a_w, b_w, c_w, d_w, e_w, f_w, g_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_extract( use_a, use_b, use_c, use_d, use_e, use_f, use_g : BOOLEAN; a_w, b_w, c_w, d_w, e_w, f_w, g_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_extract( use_a, use_b, use_c, use_d, use_e, use_f : BOOLEAN; a_w, b_w, c_w, d_w, e_w, f_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_extract( use_a, use_b, use_c, use_d, use_e, use_f : BOOLEAN; a_w, b_w, c_w, d_w, e_w, f_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_extract( use_a, use_b, use_c, use_d, use_e : BOOLEAN; a_w, b_w, c_w, d_w, e_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_extract( use_a, use_b, use_c, use_d, use_e : BOOLEAN; a_w, b_w, c_w, d_w, e_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_extract( use_a, use_b, use_c, use_d : BOOLEAN; a_w, b_w, c_w, d_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_extract( use_a, use_b, use_c, use_d : BOOLEAN; a_w, b_w, c_w, d_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_extract( use_a, use_b, use_c : BOOLEAN; a_w, b_w, c_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_extract( use_a, use_b, use_c : BOOLEAN; a_w, b_w, c_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_extract( use_a, use_b : BOOLEAN; a_w, b_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR;
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FUNCTION func_slv_extract( use_a, use_b : BOOLEAN; a_w, b_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR;
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FUNCTION TO_UINT(vec : STD_LOGIC_VECTOR) RETURN NATURAL; -- beware: NATURAL'HIGH = 2**31-1, not 2*32-1, use TO_SINT to avoid warning
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FUNCTION TO_UINT(vec : STD_LOGIC_VECTOR) RETURN NATURAL; -- beware: NATURAL'HIGH = 2**31-1, not 2*32-1, use TO_SINT to avoid warning
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FUNCTION TO_SINT(vec : STD_LOGIC_VECTOR) RETURN INTEGER;
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FUNCTION TO_SINT(vec : STD_LOGIC_VECTOR) RETURN INTEGER;
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FUNCTION TO_UVEC(dec, w : NATURAL) RETURN STD_LOGIC_VECTOR;
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FUNCTION TO_UVEC(dec, w : NATURAL) RETURN STD_LOGIC_VECTOR;
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FUNCTION TO_SVEC(dec, w : INTEGER) RETURN STD_LOGIC_VECTOR;
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FUNCTION TO_SVEC(dec, w : INTEGER) RETURN STD_LOGIC_VECTOR;
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FUNCTION TO_SVEC_32(dec : INTEGER) RETURN STD_LOGIC_VECTOR; -- = TO_SVEC() with w=32 for t_slv_32_arr slv elements
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FUNCTION TO_SVEC_32(dec : INTEGER) RETURN STD_LOGIC_VECTOR; -- = TO_SVEC() with w=32 for t_slv_32_arr slv elements
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-- The RESIZE for SIGNED in IEEE.NUMERIC_STD extends the sign bit or it keeps the sign bit and LS part. This
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-- The RESIZE for SIGNED in IEEE.NUMERIC_STD extends the sign bit or it keeps the sign bit and LS part. This
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-- behaviour of preserving the sign bit is less suitable for DSP and not necessary in general. A more
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-- behaviour of preserving the sign bit is less suitable for DSP and not necessary in general. A more
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-- appropriate approach is to ignore the MSbit sign and just keep the LS part. For too large values this
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-- appropriate approach is to ignore the MSbit sign and just keep the LS part. For too large values this
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-- means that the result gets wrapped, but that is fine for default behaviour, because that is also what
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-- means that the result gets wrapped, but that is fine for default behaviour, because that is also what
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-- happens for RESIZE of UNSIGNED. Therefor this is what the RESIZE_NUM for SIGNED and the RESIZE_SVEC do
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-- happens for RESIZE of UNSIGNED. Therefor this is what the RESIZE_NUM for SIGNED and the RESIZE_SVEC do
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-- and better not use RESIZE for SIGNED anymore.
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-- and better not use RESIZE for SIGNED anymore.
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FUNCTION RESIZE_NUM( u : UNSIGNED; w : NATURAL) RETURN UNSIGNED; -- left extend with '0' or keep LS part (same as RESIZE for UNSIGNED)
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FUNCTION RESIZE_NUM( u : UNSIGNED; w : NATURAL) RETURN UNSIGNED; -- left extend with '0' or keep LS part (same as RESIZE for UNSIGNED)
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FUNCTION RESIZE_NUM( s : SIGNED; w : NATURAL) RETURN SIGNED; -- extend sign bit or keep LS part
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FUNCTION RESIZE_NUM( s : SIGNED; w : NATURAL) RETURN SIGNED; -- extend sign bit or keep LS part
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FUNCTION RESIZE_UVEC(sl : STD_LOGIC; w : NATURAL) RETURN STD_LOGIC_VECTOR; -- left extend with '0' into slv
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FUNCTION RESIZE_UVEC(sl : STD_LOGIC; w : NATURAL) RETURN STD_LOGIC_VECTOR; -- left extend with '0' into slv
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FUNCTION RESIZE_UVEC(vec : STD_LOGIC_VECTOR; w : NATURAL) RETURN STD_LOGIC_VECTOR; -- left extend with '0' or keep LS part
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FUNCTION RESIZE_UVEC(vec : STD_LOGIC_VECTOR; w : NATURAL) RETURN STD_LOGIC_VECTOR; -- left extend with '0' or keep LS part
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FUNCTION RESIZE_SVEC(vec : STD_LOGIC_VECTOR; w : NATURAL) RETURN STD_LOGIC_VECTOR; -- extend sign bit or keep LS part
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FUNCTION RESIZE_SVEC(vec : STD_LOGIC_VECTOR; w : NATURAL) RETURN STD_LOGIC_VECTOR; -- extend sign bit or keep LS part
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FUNCTION RESIZE_UINT(u : INTEGER; w : NATURAL) RETURN INTEGER; -- left extend with '0' or keep LS part
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FUNCTION RESIZE_UINT(u : INTEGER; w : NATURAL) RETURN INTEGER; -- left extend with '0' or keep LS part
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FUNCTION RESIZE_SINT(s : INTEGER; w : NATURAL) RETURN INTEGER; -- extend sign bit or keep LS part
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FUNCTION RESIZE_SINT(s : INTEGER; w : NATURAL) RETURN INTEGER; -- extend sign bit or keep LS part
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FUNCTION RESIZE_UVEC_32(vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR; -- = RESIZE_UVEC() with w=32 for t_slv_32_arr slv elements
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FUNCTION RESIZE_UVEC_32(vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR; -- = RESIZE_UVEC() with w=32 for t_slv_32_arr slv elements
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FUNCTION RESIZE_SVEC_32(vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR; -- = RESIZE_SVEC() with w=32 for t_slv_32_arr slv elements
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FUNCTION RESIZE_SVEC_32(vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR; -- = RESIZE_SVEC() with w=32 for t_slv_32_arr slv elements
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FUNCTION INCR_UVEC(vec : STD_LOGIC_VECTOR; dec : INTEGER) RETURN STD_LOGIC_VECTOR;
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FUNCTION INCR_UVEC(vec : STD_LOGIC_VECTOR; dec : INTEGER) RETURN STD_LOGIC_VECTOR;
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FUNCTION INCR_UVEC(vec : STD_LOGIC_VECTOR; dec : UNSIGNED) RETURN STD_LOGIC_VECTOR;
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FUNCTION INCR_UVEC(vec : STD_LOGIC_VECTOR; dec : UNSIGNED) RETURN STD_LOGIC_VECTOR;
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FUNCTION INCR_SVEC(vec : STD_LOGIC_VECTOR; dec : INTEGER) RETURN STD_LOGIC_VECTOR;
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FUNCTION INCR_SVEC(vec : STD_LOGIC_VECTOR; dec : INTEGER) RETURN STD_LOGIC_VECTOR;
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FUNCTION INCR_SVEC(vec : STD_LOGIC_VECTOR; dec : SIGNED) RETURN STD_LOGIC_VECTOR;
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FUNCTION INCR_SVEC(vec : STD_LOGIC_VECTOR; dec : SIGNED) RETURN STD_LOGIC_VECTOR;
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-- Used in common_add_sub.vhd
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-- Used in common_add_sub.vhd
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FUNCTION ADD_SVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR; res_w : NATURAL) RETURN STD_LOGIC_VECTOR; -- l_vec + r_vec, treat slv operands as signed, slv output width is res_w
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FUNCTION ADD_SVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR; res_w : NATURAL) RETURN STD_LOGIC_VECTOR; -- l_vec + r_vec, treat slv operands as signed, slv output width is res_w
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FUNCTION SUB_SVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR; res_w : NATURAL) RETURN STD_LOGIC_VECTOR; -- l_vec - r_vec, treat slv operands as signed, slv output width is res_w
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FUNCTION SUB_SVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR; res_w : NATURAL) RETURN STD_LOGIC_VECTOR; -- l_vec - r_vec, treat slv operands as signed, slv output width is res_w
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FUNCTION ADD_UVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR; res_w : NATURAL) RETURN STD_LOGIC_VECTOR; -- l_vec + r_vec, treat slv operands as unsigned, slv output width is res_w
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FUNCTION ADD_UVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR; res_w : NATURAL) RETURN STD_LOGIC_VECTOR; -- l_vec + r_vec, treat slv operands as unsigned, slv output width is res_w
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FUNCTION SUB_UVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR; res_w : NATURAL) RETURN STD_LOGIC_VECTOR; -- l_vec - r_vec, treat slv operands as unsigned, slv output width is res_w
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FUNCTION SUB_UVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR; res_w : NATURAL) RETURN STD_LOGIC_VECTOR; -- l_vec - r_vec, treat slv operands as unsigned, slv output width is res_w
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FUNCTION ADD_SVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR; -- l_vec + r_vec, treat slv operands as signed, slv output width is l_vec'LENGTH
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FUNCTION ADD_SVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR; -- l_vec + r_vec, treat slv operands as signed, slv output width is l_vec'LENGTH
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FUNCTION SUB_SVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR; -- l_vec - r_vec, treat slv operands as signed, slv output width is l_vec'LENGTH
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FUNCTION SUB_SVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR; -- l_vec - r_vec, treat slv operands as signed, slv output width is l_vec'LENGTH
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FUNCTION ADD_UVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR; -- l_vec + r_vec, treat slv operands as unsigned, slv output width is l_vec'LENGTH
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FUNCTION ADD_UVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR; -- l_vec + r_vec, treat slv operands as unsigned, slv output width is l_vec'LENGTH
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FUNCTION SUB_UVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR; -- l_vec - r_vec, treat slv operands as unsigned, slv output width is l_vec'LENGTH
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FUNCTION SUB_UVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR; -- l_vec - r_vec, treat slv operands as unsigned, slv output width is l_vec'LENGTH
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FUNCTION COMPLEX_MULT_REAL(a_re, a_im, b_re, b_im : INTEGER) RETURN INTEGER; -- Calculate real part of complex multiplication: a_re*b_re - a_im*b_im
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FUNCTION COMPLEX_MULT_REAL(a_re, a_im, b_re, b_im : INTEGER) RETURN INTEGER; -- Calculate real part of complex multiplication: a_re*b_re - a_im*b_im
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FUNCTION COMPLEX_MULT_IMAG(a_re, a_im, b_re, b_im : INTEGER) RETURN INTEGER; -- Calculate imag part of complex multiplication: a_im*b_re + a_re*b_im
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FUNCTION COMPLEX_MULT_IMAG(a_re, a_im, b_re, b_im : INTEGER) RETURN INTEGER; -- Calculate imag part of complex multiplication: a_im*b_re + a_re*b_im
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FUNCTION SHIFT_UVEC(vec : STD_LOGIC_VECTOR; shift : INTEGER) RETURN STD_LOGIC_VECTOR; -- < 0 shift left, > 0 shift right
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FUNCTION SHIFT_UVEC(vec : STD_LOGIC_VECTOR; shift : INTEGER) RETURN STD_LOGIC_VECTOR; -- < 0 shift left, > 0 shift right
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FUNCTION SHIFT_SVEC(vec : STD_LOGIC_VECTOR; shift : INTEGER) RETURN STD_LOGIC_VECTOR; -- < 0 shift left, > 0 shift right
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FUNCTION SHIFT_SVEC(vec : STD_LOGIC_VECTOR; shift : INTEGER) RETURN STD_LOGIC_VECTOR; -- < 0 shift left, > 0 shift right
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FUNCTION offset_binary(a : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR;
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FUNCTION offset_binary(a : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR;
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FUNCTION truncate( vec : STD_LOGIC_VECTOR; n : NATURAL) RETURN STD_LOGIC_VECTOR; -- remove n LSBits from vec, so result has width vec'LENGTH-n
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FUNCTION truncate( vec : STD_LOGIC_VECTOR; n : NATURAL) RETURN STD_LOGIC_VECTOR; -- remove n LSBits from vec, so result has width vec'LENGTH-n
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FUNCTION truncate_and_resize_uvec(vec : STD_LOGIC_VECTOR; n, w : NATURAL) RETURN STD_LOGIC_VECTOR; -- remove n LSBits from vec and then resize to width w
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FUNCTION truncate_and_resize_uvec(vec : STD_LOGIC_VECTOR; n, w : NATURAL) RETURN STD_LOGIC_VECTOR; -- remove n LSBits from vec and then resize to width w
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FUNCTION truncate_and_resize_svec(vec : STD_LOGIC_VECTOR; n, w : NATURAL) RETURN STD_LOGIC_VECTOR; -- idem for signed values
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FUNCTION truncate_and_resize_svec(vec : STD_LOGIC_VECTOR; n, w : NATURAL) RETURN STD_LOGIC_VECTOR; -- idem for signed values
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FUNCTION scale( vec : STD_LOGIC_VECTOR; n: NATURAL) RETURN STD_LOGIC_VECTOR; -- add n '0' LSBits to vec
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FUNCTION scale( vec : STD_LOGIC_VECTOR; n: NATURAL) RETURN STD_LOGIC_VECTOR; -- add n '0' LSBits to vec
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FUNCTION scale_and_resize_uvec( vec : STD_LOGIC_VECTOR; n, w : NATURAL) RETURN STD_LOGIC_VECTOR; -- add n '0' LSBits to vec and then resize to width w
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FUNCTION scale_and_resize_uvec( vec : STD_LOGIC_VECTOR; n, w : NATURAL) RETURN STD_LOGIC_VECTOR; -- add n '0' LSBits to vec and then resize to width w
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FUNCTION scale_and_resize_svec( vec : STD_LOGIC_VECTOR; n, w : NATURAL) RETURN STD_LOGIC_VECTOR; -- idem for signed values
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FUNCTION scale_and_resize_svec( vec : STD_LOGIC_VECTOR; n, w : NATURAL) RETURN STD_LOGIC_VECTOR; -- idem for signed values
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FUNCTION truncate_or_resize_uvec( vec : STD_LOGIC_VECTOR; b : BOOLEAN; w : NATURAL) RETURN STD_LOGIC_VECTOR; -- when b=TRUE then truncate to width w, else resize to width w
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FUNCTION truncate_or_resize_uvec( vec : STD_LOGIC_VECTOR; b : BOOLEAN; w : NATURAL) RETURN STD_LOGIC_VECTOR; -- when b=TRUE then truncate to width w, else resize to width w
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FUNCTION truncate_or_resize_svec( vec : STD_LOGIC_VECTOR; b : BOOLEAN; w : NATURAL) RETURN STD_LOGIC_VECTOR; -- idem for signed values
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FUNCTION truncate_or_resize_svec( vec : STD_LOGIC_VECTOR; b : BOOLEAN; w : NATURAL) RETURN STD_LOGIC_VECTOR; -- idem for signed values
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FUNCTION s_round( vec : STD_LOGIC_VECTOR; n : NATURAL; clip : BOOLEAN) RETURN STD_LOGIC_VECTOR; -- remove n LSBits from vec by rounding away from 0, so result has width vec'LENGTH-n, and clip to avoid wrap
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FUNCTION s_round( vec : STD_LOGIC_VECTOR; n : NATURAL; clip : BOOLEAN) RETURN STD_LOGIC_VECTOR; -- remove n LSBits from vec by rounding away from 0, so result has width vec'LENGTH-n, and clip to avoid wrap
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FUNCTION s_round( vec : STD_LOGIC_VECTOR; n : NATURAL) RETURN STD_LOGIC_VECTOR; -- remove n LSBits from vec by rounding away from 0, so result has width vec'LENGTH-n
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FUNCTION s_round( vec : STD_LOGIC_VECTOR; n : NATURAL) RETURN STD_LOGIC_VECTOR; -- remove n LSBits from vec by rounding away from 0, so result has width vec'LENGTH-n
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FUNCTION s_round_up(vec : STD_LOGIC_VECTOR; n : NATURAL; clip : BOOLEAN) RETURN STD_LOGIC_VECTOR; -- idem but round up to +infinity (s_round_up = u_round)
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FUNCTION s_round_up(vec : STD_LOGIC_VECTOR; n : NATURAL; clip : BOOLEAN) RETURN STD_LOGIC_VECTOR; -- idem but round up to +infinity (s_round_up = u_round)
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FUNCTION s_round_up(vec : STD_LOGIC_VECTOR; n : NATURAL) RETURN STD_LOGIC_VECTOR; -- idem but round up to +infinity (s_round_up = u_round)
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FUNCTION s_round_up(vec : STD_LOGIC_VECTOR; n : NATURAL) RETURN STD_LOGIC_VECTOR; -- idem but round up to +infinity (s_round_up = u_round)
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FUNCTION u_round( vec : STD_LOGIC_VECTOR; n : NATURAL; clip : BOOLEAN) RETURN STD_LOGIC_VECTOR; -- idem round up for unsigned values
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FUNCTION u_round( vec : STD_LOGIC_VECTOR; n : NATURAL; clip : BOOLEAN) RETURN STD_LOGIC_VECTOR; -- idem round up for unsigned values
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FUNCTION u_round( vec : STD_LOGIC_VECTOR; n : NATURAL) RETURN STD_LOGIC_VECTOR; -- idem round up for unsigned values
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FUNCTION u_round( vec : STD_LOGIC_VECTOR; n : NATURAL) RETURN STD_LOGIC_VECTOR; -- idem round up for unsigned values
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FUNCTION u_to_s(u : NATURAL; w : NATURAL) RETURN INTEGER; -- interpret w bit unsigned u as w bit signed, and remove any MSbits
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FUNCTION u_to_s(u : NATURAL; w : NATURAL) RETURN INTEGER; -- interpret w bit unsigned u as w bit signed, and remove any MSbits
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FUNCTION s_to_u(s : INTEGER; w : NATURAL) RETURN NATURAL; -- interpret w bit signed s as w bit unsigned, and remove any MSbits
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FUNCTION s_to_u(s : INTEGER; w : NATURAL) RETURN NATURAL; -- interpret w bit signed s as w bit unsigned, and remove any MSbits
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FUNCTION u_wrap(u : NATURAL; w : NATURAL) RETURN NATURAL; -- return u & 2**w-1 (bit wise and), so keep w LSbits of unsigned u, and remove MSbits
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FUNCTION u_wrap(u : NATURAL; w : NATURAL) RETURN NATURAL; -- return u & 2**w-1 (bit wise and), so keep w LSbits of unsigned u, and remove MSbits
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FUNCTION s_wrap(s : INTEGER; w : NATURAL) RETURN INTEGER; -- return s & 2**w-1 (bit wise and), so keep w LSbits of signed s, and remove MSbits
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FUNCTION s_wrap(s : INTEGER; w : NATURAL) RETURN INTEGER; -- return s & 2**w-1 (bit wise and), so keep w LSbits of signed s, and remove MSbits
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FUNCTION u_clip(u : NATURAL; max : NATURAL) RETURN NATURAL; -- if s < max return s, else return n
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FUNCTION u_clip(u : NATURAL; max : NATURAL) RETURN NATURAL; -- if s < max return s, else return n
|
FUNCTION s_clip(s : INTEGER; max : NATURAL; min : INTEGER) RETURN INTEGER; -- if s <= min return min, else if s >= max return max, else return s
|
FUNCTION s_clip(s : INTEGER; max : NATURAL; min : INTEGER) RETURN INTEGER; -- if s <= min return min, else if s >= max return max, else return s
|
FUNCTION s_clip(s : INTEGER; max : NATURAL ) RETURN INTEGER; -- if s <= -max return -max, else if s >= max return max, else return s
|
FUNCTION s_clip(s : INTEGER; max : NATURAL ) RETURN INTEGER; -- if s <= -max return -max, else if s >= max return max, else return s
|
|
|
FUNCTION hton(a : STD_LOGIC_VECTOR; w, sz : NATURAL) RETURN STD_LOGIC_VECTOR; -- convert endianity from host to network, sz in symbols of width w
|
FUNCTION hton(a : STD_LOGIC_VECTOR; w, sz : NATURAL) RETURN STD_LOGIC_VECTOR; -- convert endianity from host to network, sz in symbols of width w
|
FUNCTION hton(a : STD_LOGIC_VECTOR; sz : NATURAL) RETURN STD_LOGIC_VECTOR; -- convert endianity from host to network, sz in bytes
|
FUNCTION hton(a : STD_LOGIC_VECTOR; sz : NATURAL) RETURN STD_LOGIC_VECTOR; -- convert endianity from host to network, sz in bytes
|
FUNCTION hton(a : STD_LOGIC_VECTOR ) RETURN STD_LOGIC_VECTOR; -- convert endianity from host to network, for all bytes in a
|
FUNCTION hton(a : STD_LOGIC_VECTOR ) RETURN STD_LOGIC_VECTOR; -- convert endianity from host to network, for all bytes in a
|
FUNCTION ntoh(a : STD_LOGIC_VECTOR; sz : NATURAL) RETURN STD_LOGIC_VECTOR; -- convert endianity from network to host, sz in bytes, ntoh() = hton()
|
FUNCTION ntoh(a : STD_LOGIC_VECTOR; sz : NATURAL) RETURN STD_LOGIC_VECTOR; -- convert endianity from network to host, sz in bytes, ntoh() = hton()
|
FUNCTION ntoh(a : STD_LOGIC_VECTOR ) RETURN STD_LOGIC_VECTOR; -- convert endianity from network to host, for all bytes in a, ntoh() = hton()
|
FUNCTION ntoh(a : STD_LOGIC_VECTOR ) RETURN STD_LOGIC_VECTOR; -- convert endianity from network to host, for all bytes in a, ntoh() = hton()
|
|
|
FUNCTION flip(a : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR; -- bit flip a vector, map a[h:0] to [0:h]
|
FUNCTION flip(a : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR; -- bit flip a vector, map a[h:0] to [0:h]
|
FUNCTION flip(a, w : NATURAL) RETURN NATURAL; -- bit flip a vector, map a[h:0] to [0:h], h = w-1
|
FUNCTION flip(a, w : NATURAL) RETURN NATURAL; -- bit flip a vector, map a[h:0] to [0:h], h = w-1
|
FUNCTION flip(a : t_slv_32_arr) RETURN t_slv_32_arr;
|
FUNCTION flip(a : t_slv_32_arr) RETURN t_slv_32_arr;
|
FUNCTION flip(a : t_integer_arr) RETURN t_integer_arr;
|
FUNCTION flip(a : t_integer_arr) RETURN t_integer_arr;
|
FUNCTION flip(a : t_natural_arr) RETURN t_natural_arr;
|
FUNCTION flip(a : t_natural_arr) RETURN t_natural_arr;
|
FUNCTION flip(a : t_nat_natural_arr) RETURN t_nat_natural_arr;
|
FUNCTION flip(a : t_nat_natural_arr) RETURN t_nat_natural_arr;
|
|
|
FUNCTION transpose(a : STD_LOGIC_VECTOR; row, col : NATURAL) RETURN STD_LOGIC_VECTOR; -- transpose a vector, map a[i*row+j] to output index [j*col+i]
|
FUNCTION transpose(a : STD_LOGIC_VECTOR; row, col : NATURAL) RETURN STD_LOGIC_VECTOR; -- transpose a vector, map a[i*row+j] to output index [j*col+i]
|
FUNCTION transpose(a, row, col : NATURAL) RETURN NATURAL; -- transpose index a = [i*row+j] to output index [j*col+i]
|
FUNCTION transpose(a, row, col : NATURAL) RETURN NATURAL; -- transpose index a = [i*row+j] to output index [j*col+i]
|
|
|
FUNCTION split_w(input_w: NATURAL; min_out_w: NATURAL; max_out_w: NATURAL) RETURN NATURAL;
|
FUNCTION split_w(input_w: NATURAL; min_out_w: NATURAL; max_out_w: NATURAL) RETURN NATURAL;
|
|
|
FUNCTION pad(str: STRING; width: NATURAL; pad_char: CHARACTER) RETURN STRING;
|
FUNCTION pad(str: STRING; width: NATURAL; pad_char: CHARACTER) RETURN STRING;
|
|
|
FUNCTION slice_up(str: STRING; width: NATURAL; i: NATURAL) RETURN STRING;
|
FUNCTION slice_up(str: STRING; width: NATURAL; i: NATURAL) RETURN STRING;
|
FUNCTION slice_up(str: STRING; width: NATURAL; i: NATURAL; pad_char: CHARACTER) RETURN STRING;
|
FUNCTION slice_up(str: STRING; width: NATURAL; i: NATURAL; pad_char: CHARACTER) RETURN STRING;
|
FUNCTION slice_dn(str: STRING; width: NATURAL; i: NATURAL) RETURN STRING;
|
FUNCTION slice_dn(str: STRING; width: NATURAL; i: NATURAL) RETURN STRING;
|
|
|
FUNCTION nat_arr_to_concat_slv(nat_arr: t_natural_arr; nof_elements: NATURAL) RETURN STD_LOGIC_VECTOR;
|
FUNCTION nat_arr_to_concat_slv(nat_arr: t_natural_arr; nof_elements: NATURAL) RETURN STD_LOGIC_VECTOR;
|
|
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
-- Component specific functions
|
-- Component specific functions
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
|
|
-- common_fifo_*
|
-- common_fifo_*
|
PROCEDURE proc_common_fifo_asserts (CONSTANT c_fifo_name : IN STRING;
|
PROCEDURE proc_common_fifo_asserts (CONSTANT c_fifo_name : IN STRING;
|
CONSTANT c_note_is_ful : IN BOOLEAN;
|
CONSTANT c_note_is_ful : IN BOOLEAN;
|
CONSTANT c_fail_rd_emp : IN BOOLEAN;
|
CONSTANT c_fail_rd_emp : IN BOOLEAN;
|
SIGNAL wr_rst : IN STD_LOGIC;
|
SIGNAL wr_rst : IN STD_LOGIC;
|
SIGNAL wr_clk : IN STD_LOGIC;
|
SIGNAL wr_clk : IN STD_LOGIC;
|
SIGNAL wr_full : IN STD_LOGIC;
|
SIGNAL wr_full : IN STD_LOGIC;
|
SIGNAL wr_en : IN STD_LOGIC;
|
SIGNAL wr_en : IN STD_LOGIC;
|
SIGNAL rd_clk : IN STD_LOGIC;
|
SIGNAL rd_clk : IN STD_LOGIC;
|
SIGNAL rd_empty : IN STD_LOGIC;
|
SIGNAL rd_empty : IN STD_LOGIC;
|
SIGNAL rd_en : IN STD_LOGIC);
|
SIGNAL rd_en : IN STD_LOGIC);
|
|
|
-- common_fanout_tree
|
-- common_fanout_tree
|
FUNCTION func_common_fanout_tree_pipelining(c_nof_stages, c_nof_output_per_cell, c_nof_output : NATURAL;
|
FUNCTION func_common_fanout_tree_pipelining(c_nof_stages, c_nof_output_per_cell, c_nof_output : NATURAL;
|
c_cell_pipeline_factor_arr, c_cell_pipeline_arr : t_natural_arr) RETURN t_natural_arr;
|
c_cell_pipeline_factor_arr, c_cell_pipeline_arr : t_natural_arr) RETURN t_natural_arr;
|
|
|
-- common_reorder_symbol
|
-- common_reorder_symbol
|
FUNCTION func_common_reorder2_is_there(I, J : NATURAL) RETURN BOOLEAN;
|
FUNCTION func_common_reorder2_is_there(I, J : NATURAL) RETURN BOOLEAN;
|
FUNCTION func_common_reorder2_is_active(I, J, N : NATURAL) RETURN BOOLEAN;
|
FUNCTION func_common_reorder2_is_active(I, J, N : NATURAL) RETURN BOOLEAN;
|
FUNCTION func_common_reorder2_get_select_index(I, J, N : NATURAL) RETURN INTEGER;
|
FUNCTION func_common_reorder2_get_select_index(I, J, N : NATURAL) RETURN INTEGER;
|
FUNCTION func_common_reorder2_get_select(I, J, N : NATURAL; select_arr : t_natural_arr) RETURN NATURAL;
|
FUNCTION func_common_reorder2_get_select(I, J, N : NATURAL; select_arr : t_natural_arr) RETURN NATURAL;
|
FUNCTION func_common_reorder2_inverse_select(N : NATURAL; select_arr : t_natural_arr) RETURN t_natural_arr;
|
FUNCTION func_common_reorder2_inverse_select(N : NATURAL; select_arr : t_natural_arr) RETURN t_natural_arr;
|
|
|
-- Generate faster sample SCLK from digital DCLK for sim only
|
-- Generate faster sample SCLK from digital DCLK for sim only
|
PROCEDURE proc_common_dclk_generate_sclk(CONSTANT Pfactor : IN POSITIVE;
|
PROCEDURE proc_common_dclk_generate_sclk(CONSTANT Pfactor : IN POSITIVE;
|
SIGNAL dclk : IN STD_LOGIC;
|
SIGNAL dclk : IN STD_LOGIC;
|
SIGNAL sclk : INOUT STD_LOGIC);
|
SIGNAL sclk : INOUT STD_LOGIC);
|
|
|
END common_pkg;
|
END common_pkg;
|
|
|
PACKAGE BODY common_pkg IS
|
PACKAGE BODY common_pkg IS
|
|
|
FUNCTION pow2(n : NATURAL) RETURN NATURAL IS
|
FUNCTION pow2(n : NATURAL) RETURN NATURAL IS
|
BEGIN
|
BEGIN
|
RETURN 2**n;
|
RETURN 2**n;
|
END;
|
END;
|
|
|
FUNCTION ceil_pow2(n : INTEGER) RETURN NATURAL IS
|
FUNCTION ceil_pow2(n : INTEGER) RETURN NATURAL IS
|
-- Also allows negative exponents and rounds up before returning the value
|
-- Also allows negative exponents and rounds up before returning the value
|
BEGIN
|
BEGIN
|
RETURN natural(integer(ceil(2**real(n))));
|
RETURN natural(integer(ceil(2**real(n))));
|
END;
|
END;
|
|
|
FUNCTION true_log2(n : NATURAL) RETURN NATURAL IS
|
FUNCTION true_log2(n : NATURAL) RETURN NATURAL IS
|
-- Purpose: For calculating extra vector width of existing vector
|
-- Purpose: For calculating extra vector width of existing vector
|
-- Description: Return mathematical ceil(log2(n))
|
-- Description: Return mathematical ceil(log2(n))
|
-- n log2()
|
-- n log2()
|
-- 0 -> -oo --> FAILURE
|
-- 0 -> -oo --> FAILURE
|
-- 1 -> 0
|
-- 1 -> 0
|
-- 2 -> 1
|
-- 2 -> 1
|
-- 3 -> 2
|
-- 3 -> 2
|
-- 4 -> 2
|
-- 4 -> 2
|
-- 5 -> 3
|
-- 5 -> 3
|
-- 6 -> 3
|
-- 6 -> 3
|
-- 7 -> 3
|
-- 7 -> 3
|
-- 8 -> 3
|
-- 8 -> 3
|
-- 9 -> 4
|
-- 9 -> 4
|
-- etc, up to n = NATURAL'HIGH = 2**31-1
|
-- etc, up to n = NATURAL'HIGH = 2**31-1
|
BEGIN
|
BEGIN
|
RETURN natural(integer(ceil(log2(real(n)))));
|
RETURN natural(integer(ceil(log2(real(n)))));
|
END;
|
END;
|
|
|
FUNCTION ceil_log2(n : NATURAL) RETURN NATURAL IS
|
FUNCTION ceil_log2(n : NATURAL) RETURN NATURAL IS
|
-- Purpose: For calculating vector width of new vector
|
-- Purpose: For calculating vector width of new vector
|
-- Description:
|
-- Description:
|
-- Same as true_log2() except ceil_log2(1) = 1, which is needed to support
|
-- Same as true_log2() except ceil_log2(1) = 1, which is needed to support
|
-- the vector width width for 1 address, to avoid NULL array for single
|
-- the vector width width for 1 address, to avoid NULL array for single
|
-- word register address.
|
-- word register address.
|
-- If n = 0, return 0 so we get a NULL array when using
|
-- If n = 0, return 0 so we get a NULL array when using
|
-- STD_LOGIC_VECTOR(ceil_log2(g_addr_w)-1 DOWNTO 0), instead of an error.
|
-- STD_LOGIC_VECTOR(ceil_log2(g_addr_w)-1 DOWNTO 0), instead of an error.
|
BEGIN
|
BEGIN
|
IF n = 0 THEN
|
IF n = 0 THEN
|
RETURN 0; -- Get NULL array
|
RETURN 0; -- Get NULL array
|
ELSIF n = 1 THEN
|
ELSIF n = 1 THEN
|
RETURN 1; -- avoid NULL array
|
RETURN 1; -- avoid NULL array
|
ELSE
|
ELSE
|
RETURN true_log2(n);
|
RETURN true_log2(n);
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION floor_log10(n : NATURAL) RETURN NATURAL IS
|
FUNCTION floor_log10(n : NATURAL) RETURN NATURAL IS
|
BEGIN
|
BEGIN
|
RETURN natural(integer(floor(log10(real(n)))));
|
RETURN natural(integer(floor(log10(real(n)))));
|
END;
|
END;
|
|
|
FUNCTION is_pow2(n : NATURAL) RETURN BOOLEAN IS
|
FUNCTION is_pow2(n : NATURAL) RETURN BOOLEAN IS
|
BEGIN
|
BEGIN
|
RETURN n=2**true_log2(n);
|
RETURN n=2**true_log2(n);
|
END;
|
END;
|
|
|
FUNCTION true_log_pow2(n : NATURAL) RETURN NATURAL IS
|
FUNCTION true_log_pow2(n : NATURAL) RETURN NATURAL IS
|
BEGIN
|
BEGIN
|
RETURN 2**true_log2(n);
|
RETURN 2**true_log2(n);
|
END;
|
END;
|
|
|
FUNCTION ratio(n, d : NATURAL) RETURN NATURAL IS
|
FUNCTION ratio(n, d : NATURAL) RETURN NATURAL IS
|
BEGIN
|
BEGIN
|
IF n MOD d = 0 THEN
|
IF n MOD d = 0 THEN
|
RETURN n/d;
|
RETURN n/d;
|
ELSE
|
ELSE
|
RETURN 0;
|
RETURN 0;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION ratio2(n, m : NATURAL) RETURN NATURAL IS
|
FUNCTION ratio2(n, m : NATURAL) RETURN NATURAL IS
|
BEGIN
|
BEGIN
|
RETURN largest(ratio(n,m), ratio(m,n));
|
RETURN largest(ratio(n,m), ratio(m,n));
|
END;
|
END;
|
|
|
FUNCTION ceil_div(n, d : NATURAL) RETURN NATURAL IS
|
FUNCTION ceil_div(n, d : NATURAL) RETURN NATURAL IS
|
BEGIN
|
BEGIN
|
RETURN n/d + sel_a_b(n MOD d = 0, 0, 1);
|
RETURN n/d + sel_a_b(n MOD d = 0, 0, 1);
|
END;
|
END;
|
|
|
FUNCTION ceil_value(n, d : NATURAL) RETURN NATURAL IS
|
FUNCTION ceil_value(n, d : NATURAL) RETURN NATURAL IS
|
BEGIN
|
BEGIN
|
RETURN ceil_div(n, d) * d;
|
RETURN ceil_div(n, d) * d;
|
END;
|
END;
|
|
|
FUNCTION floor_value(n, d : NATURAL) RETURN NATURAL IS
|
FUNCTION floor_value(n, d : NATURAL) RETURN NATURAL IS
|
BEGIN
|
BEGIN
|
RETURN (n / d) * d;
|
RETURN (n / d) * d;
|
END;
|
END;
|
|
|
FUNCTION ceil_div(n : UNSIGNED; d: NATURAL) RETURN UNSIGNED IS
|
FUNCTION ceil_div(n : UNSIGNED; d: NATURAL) RETURN UNSIGNED IS
|
BEGIN
|
BEGIN
|
RETURN n/d + sel_a_b(n MOD d = 0, 0, 1); -- "/" returns same width as n
|
RETURN n/d + sel_a_b(n MOD d = 0, 0, 1); -- "/" returns same width as n
|
END;
|
END;
|
|
|
FUNCTION ceil_value(n : UNSIGNED; d: NATURAL) RETURN UNSIGNED IS
|
FUNCTION ceil_value(n : UNSIGNED; d: NATURAL) RETURN UNSIGNED IS
|
CONSTANT w : NATURAL := n'LENGTH;
|
CONSTANT w : NATURAL := n'LENGTH;
|
VARIABLE p : UNSIGNED(2*w-1 DOWNTO 0);
|
VARIABLE p : UNSIGNED(2*w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
p := ceil_div(n, d) * d;
|
p := ceil_div(n, d) * d;
|
RETURN p(w-1 DOWNTO 0); -- return same width as n
|
RETURN p(w-1 DOWNTO 0); -- return same width as n
|
END;
|
END;
|
|
|
FUNCTION floor_value(n : UNSIGNED; d: NATURAL) RETURN UNSIGNED IS
|
FUNCTION floor_value(n : UNSIGNED; d: NATURAL) RETURN UNSIGNED IS
|
CONSTANT w : NATURAL := n'LENGTH;
|
CONSTANT w : NATURAL := n'LENGTH;
|
VARIABLE p : UNSIGNED(2*w-1 DOWNTO 0);
|
VARIABLE p : UNSIGNED(2*w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
p := (n / d) * d;
|
p := (n / d) * d;
|
RETURN p(w-1 DOWNTO 0); -- return same width as n
|
RETURN p(w-1 DOWNTO 0); -- return same width as n
|
END;
|
END;
|
|
|
FUNCTION slv(n: IN STD_LOGIC) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION slv(n: IN STD_LOGIC) RETURN STD_LOGIC_VECTOR IS
|
VARIABLE r : STD_LOGIC_VECTOR(0 DOWNTO 0);
|
VARIABLE r : STD_LOGIC_VECTOR(0 DOWNTO 0);
|
BEGIN
|
BEGIN
|
r(0) := n;
|
r(0) := n;
|
RETURN r;
|
RETURN r;
|
END;
|
END;
|
|
|
FUNCTION sl(n: IN STD_LOGIC_VECTOR) RETURN STD_LOGIC IS
|
FUNCTION sl(n: IN STD_LOGIC_VECTOR) RETURN STD_LOGIC IS
|
VARIABLE r : STD_LOGIC;
|
VARIABLE r : STD_LOGIC;
|
BEGIN
|
BEGIN
|
r := n(n'LOW);
|
r := n(n'LOW);
|
RETURN r;
|
RETURN r;
|
END;
|
END;
|
|
|
FUNCTION to_natural_arr(n : t_integer_arr; to_zero : BOOLEAN) RETURN t_natural_arr IS
|
FUNCTION to_natural_arr(n : t_integer_arr; to_zero : BOOLEAN) RETURN t_natural_arr IS
|
VARIABLE vN : t_integer_arr(n'LENGTH-1 DOWNTO 0);
|
VARIABLE vN : t_integer_arr(n'LENGTH-1 DOWNTO 0);
|
VARIABLE vR : t_natural_arr(n'LENGTH-1 DOWNTO 0);
|
VARIABLE vR : t_natural_arr(n'LENGTH-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vN := n;
|
vN := n;
|
FOR I IN vN'RANGE LOOP
|
FOR I IN vN'RANGE LOOP
|
IF to_zero=FALSE THEN
|
IF to_zero=FALSE THEN
|
vR(I) := vN(I);
|
vR(I) := vN(I);
|
ELSE
|
ELSE
|
vR(I) := 0;
|
vR(I) := 0;
|
IF vN(I)>0 THEN
|
IF vN(I)>0 THEN
|
vR(I) := vN(I);
|
vR(I) := vN(I);
|
END IF;
|
END IF;
|
END IF;
|
END IF;
|
END LOOP;
|
END LOOP;
|
RETURN vR;
|
RETURN vR;
|
END;
|
END;
|
|
|
FUNCTION to_natural_arr(n : t_nat_natural_arr) RETURN t_natural_arr IS
|
FUNCTION to_natural_arr(n : t_nat_natural_arr) RETURN t_natural_arr IS
|
VARIABLE vN : t_nat_natural_arr(n'LENGTH-1 DOWNTO 0);
|
VARIABLE vN : t_nat_natural_arr(n'LENGTH-1 DOWNTO 0);
|
VARIABLE vR : t_natural_arr(n'LENGTH-1 DOWNTO 0);
|
VARIABLE vR : t_natural_arr(n'LENGTH-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vN := n;
|
vN := n;
|
FOR I IN vN'RANGE LOOP
|
FOR I IN vN'RANGE LOOP
|
vR(I) := vN(I);
|
vR(I) := vN(I);
|
END LOOP;
|
END LOOP;
|
RETURN vR;
|
RETURN vR;
|
END;
|
END;
|
|
|
FUNCTION to_integer_arr(n : t_natural_arr) RETURN t_integer_arr IS
|
FUNCTION to_integer_arr(n : t_natural_arr) RETURN t_integer_arr IS
|
VARIABLE vN : t_natural_arr(n'LENGTH-1 DOWNTO 0);
|
VARIABLE vN : t_natural_arr(n'LENGTH-1 DOWNTO 0);
|
VARIABLE vR : t_integer_arr(n'LENGTH-1 DOWNTO 0);
|
VARIABLE vR : t_integer_arr(n'LENGTH-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vN := n;
|
vN := n;
|
FOR I IN vN'RANGE LOOP
|
FOR I IN vN'RANGE LOOP
|
vR(I) := vN(I);
|
vR(I) := vN(I);
|
END LOOP;
|
END LOOP;
|
RETURN vR;
|
RETURN vR;
|
END;
|
END;
|
|
|
FUNCTION to_integer_arr(n : t_nat_natural_arr) RETURN t_integer_arr IS
|
FUNCTION to_integer_arr(n : t_nat_natural_arr) RETURN t_integer_arr IS
|
VARIABLE vN : t_natural_arr(n'LENGTH-1 DOWNTO 0);
|
VARIABLE vN : t_natural_arr(n'LENGTH-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vN := to_natural_arr(n);
|
vN := to_natural_arr(n);
|
RETURN to_integer_arr(vN);
|
RETURN to_integer_arr(vN);
|
END;
|
END;
|
|
|
FUNCTION to_slv_32_arr(n : t_integer_arr) RETURN t_slv_32_arr IS
|
FUNCTION to_slv_32_arr(n : t_integer_arr) RETURN t_slv_32_arr IS
|
VARIABLE vN : t_integer_arr(n'LENGTH-1 DOWNTO 0);
|
VARIABLE vN : t_integer_arr(n'LENGTH-1 DOWNTO 0);
|
VARIABLE vR : t_slv_32_arr(n'LENGTH-1 DOWNTO 0);
|
VARIABLE vR : t_slv_32_arr(n'LENGTH-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vN := n;
|
vN := n;
|
FOR I IN vN'RANGE LOOP
|
FOR I IN vN'RANGE LOOP
|
vR(I) := TO_SVEC(vN(I), 32);
|
vR(I) := TO_SVEC(vN(I), 32);
|
END LOOP;
|
END LOOP;
|
RETURN vR;
|
RETURN vR;
|
END;
|
END;
|
|
|
FUNCTION to_slv_32_arr(n : t_natural_arr) RETURN t_slv_32_arr IS
|
FUNCTION to_slv_32_arr(n : t_natural_arr) RETURN t_slv_32_arr IS
|
VARIABLE vN : t_natural_arr(n'LENGTH-1 DOWNTO 0);
|
VARIABLE vN : t_natural_arr(n'LENGTH-1 DOWNTO 0);
|
VARIABLE vR : t_slv_32_arr(n'LENGTH-1 DOWNTO 0);
|
VARIABLE vR : t_slv_32_arr(n'LENGTH-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vN := n;
|
vN := n;
|
FOR I IN vN'RANGE LOOP
|
FOR I IN vN'RANGE LOOP
|
vR(I) := TO_UVEC(vN(I), 32);
|
vR(I) := TO_UVEC(vN(I), 32);
|
END LOOP;
|
END LOOP;
|
RETURN vR;
|
RETURN vR;
|
END;
|
END;
|
|
|
FUNCTION vector_tree(slv : STD_LOGIC_VECTOR; operation : STRING) RETURN STD_LOGIC IS
|
FUNCTION vector_tree(slv : STD_LOGIC_VECTOR; operation : STRING) RETURN STD_LOGIC IS
|
-- Linear loop to determine result takes combinatorial delay that is proportional to slv'LENGTH:
|
-- Linear loop to determine result takes combinatorial delay that is proportional to slv'LENGTH:
|
-- FOR I IN slv'RANGE LOOP
|
-- FOR I IN slv'RANGE LOOP
|
-- v_result := v_result OPERATION slv(I);
|
-- v_result := v_result OPERATION slv(I);
|
-- END LOOP;
|
-- END LOOP;
|
-- RETURN v_result;
|
-- RETURN v_result;
|
-- Instead use binary tree to determine result with smallest combinatorial delay that depends on log2(slv'LENGTH)
|
-- Instead use binary tree to determine result with smallest combinatorial delay that depends on log2(slv'LENGTH)
|
CONSTANT c_slv_w : NATURAL := slv'LENGTH;
|
CONSTANT c_slv_w : NATURAL := slv'LENGTH;
|
CONSTANT c_nof_stages : NATURAL := ceil_log2(c_slv_w);
|
CONSTANT c_nof_stages : NATURAL := ceil_log2(c_slv_w);
|
CONSTANT c_w : NATURAL := 2**c_nof_stages; -- extend the input slv to a vector with length power of 2 to ease using binary tree
|
CONSTANT c_w : NATURAL := 2**c_nof_stages; -- extend the input slv to a vector with length power of 2 to ease using binary tree
|
TYPE t_stage_arr IS ARRAY (-1 TO c_nof_stages-1) OF STD_LOGIC_VECTOR(c_w-1 DOWNTO 0);
|
TYPE t_stage_arr IS ARRAY (-1 TO c_nof_stages-1) OF STD_LOGIC_VECTOR(c_w-1 DOWNTO 0);
|
VARIABLE v_stage_arr : t_stage_arr;
|
VARIABLE v_stage_arr : t_stage_arr;
|
VARIABLE v_result : STD_LOGIC := '0';
|
VARIABLE v_result : STD_LOGIC := '0';
|
BEGIN
|
BEGIN
|
-- default any unused, the stage results will be kept in the LSBits and the last result in bit 0
|
-- default any unused, the stage results will be kept in the LSBits and the last result in bit 0
|
IF operation="AND" THEN v_stage_arr := (OTHERS=>(OTHERS=>'1'));
|
IF operation="AND" THEN v_stage_arr := (OTHERS=>(OTHERS=>'1'));
|
ELSIF operation="OR" THEN v_stage_arr := (OTHERS=>(OTHERS=>'0'));
|
ELSIF operation="OR" THEN v_stage_arr := (OTHERS=>(OTHERS=>'0'));
|
ELSIF operation="XOR" THEN v_stage_arr := (OTHERS=>(OTHERS=>'0'));
|
ELSIF operation="XOR" THEN v_stage_arr := (OTHERS=>(OTHERS=>'0'));
|
ELSE
|
ELSE
|
ASSERT TRUE REPORT "common_pkg: Unsupported vector_tree operation" SEVERITY FAILURE;
|
ASSERT TRUE REPORT "common_pkg: Unsupported vector_tree operation" SEVERITY FAILURE;
|
END IF;
|
END IF;
|
v_stage_arr(-1)(c_slv_w-1 DOWNTO 0) := slv; -- any unused input c_w : c_slv_w bits have void default value
|
v_stage_arr(-1)(c_slv_w-1 DOWNTO 0) := slv; -- any unused input c_w : c_slv_w bits have void default value
|
FOR J IN 0 TO c_nof_stages-1 LOOP
|
FOR J IN 0 TO c_nof_stages-1 LOOP
|
FOR I IN 0 TO c_w/(2**(J+1))-1 LOOP
|
FOR I IN 0 TO c_w/(2**(J+1))-1 LOOP
|
IF operation="AND" THEN v_stage_arr(J)(I) := v_stage_arr(J-1)(2*I) AND v_stage_arr(J-1)(2*I+1);
|
IF operation="AND" THEN v_stage_arr(J)(I) := v_stage_arr(J-1)(2*I) AND v_stage_arr(J-1)(2*I+1);
|
ELSIF operation="OR" THEN v_stage_arr(J)(I) := v_stage_arr(J-1)(2*I) OR v_stage_arr(J-1)(2*I+1);
|
ELSIF operation="OR" THEN v_stage_arr(J)(I) := v_stage_arr(J-1)(2*I) OR v_stage_arr(J-1)(2*I+1);
|
ELSIF operation="XOR" THEN v_stage_arr(J)(I) := v_stage_arr(J-1)(2*I) XOR v_stage_arr(J-1)(2*I+1);
|
ELSIF operation="XOR" THEN v_stage_arr(J)(I) := v_stage_arr(J-1)(2*I) XOR v_stage_arr(J-1)(2*I+1);
|
END IF;
|
END IF;
|
END LOOP;
|
END LOOP;
|
END LOOP;
|
END LOOP;
|
RETURN v_stage_arr(c_nof_stages-1)(0);
|
RETURN v_stage_arr(c_nof_stages-1)(0);
|
END;
|
END;
|
|
|
FUNCTION vector_and(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC IS
|
FUNCTION vector_and(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC IS
|
BEGIN
|
BEGIN
|
RETURN vector_tree(slv, "AND");
|
RETURN vector_tree(slv, "AND");
|
END;
|
END;
|
|
|
FUNCTION vector_or(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC IS
|
FUNCTION vector_or(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC IS
|
BEGIN
|
BEGIN
|
RETURN vector_tree(slv, "OR");
|
RETURN vector_tree(slv, "OR");
|
END;
|
END;
|
|
|
FUNCTION vector_xor(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC IS
|
FUNCTION vector_xor(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC IS
|
BEGIN
|
BEGIN
|
RETURN vector_tree(slv, "XOR");
|
RETURN vector_tree(slv, "XOR");
|
END;
|
END;
|
|
|
FUNCTION vector_one_hot(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION vector_one_hot(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
VARIABLE v_one_hot : BOOLEAN := FALSE;
|
VARIABLE v_one_hot : BOOLEAN := FALSE;
|
VARIABLE v_zeros : STD_LOGIC_VECTOR(slv'RANGE) := (OTHERS=>'0');
|
VARIABLE v_zeros : STD_LOGIC_VECTOR(slv'RANGE) := (OTHERS=>'0');
|
BEGIN
|
BEGIN
|
FOR i IN slv'RANGE LOOP
|
FOR i IN slv'RANGE LOOP
|
IF slv(i) = '1' THEN
|
IF slv(i) = '1' THEN
|
IF NOT(v_one_hot) THEN
|
IF NOT(v_one_hot) THEN
|
-- No hot bits found so far
|
-- No hot bits found so far
|
v_one_hot := TRUE;
|
v_one_hot := TRUE;
|
ELSE
|
ELSE
|
-- This is the second hot bit found; return zeros.
|
-- This is the second hot bit found; return zeros.
|
RETURN v_zeros;
|
RETURN v_zeros;
|
END IF;
|
END IF;
|
END IF;
|
END IF;
|
END LOOP;
|
END LOOP;
|
-- No or a single hot bit found in slv; return slv.
|
-- No or a single hot bit found in slv; return slv.
|
RETURN slv;
|
RETURN slv;
|
END;
|
END;
|
|
|
FUNCTION andv(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC IS
|
FUNCTION andv(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC IS
|
BEGIN
|
BEGIN
|
RETURN vector_tree(slv, "AND");
|
RETURN vector_tree(slv, "AND");
|
END;
|
END;
|
|
|
FUNCTION orv(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC IS
|
FUNCTION orv(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC IS
|
BEGIN
|
BEGIN
|
RETURN vector_tree(slv, "OR");
|
RETURN vector_tree(slv, "OR");
|
END;
|
END;
|
|
|
FUNCTION xorv(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC IS
|
FUNCTION xorv(slv : STD_LOGIC_VECTOR) RETURN STD_LOGIC IS
|
BEGIN
|
BEGIN
|
RETURN vector_tree(slv, "XOR");
|
RETURN vector_tree(slv, "XOR");
|
END;
|
END;
|
|
|
FUNCTION matrix_and(mat : t_sl_matrix; wi, wj : NATURAL) RETURN STD_LOGIC IS
|
FUNCTION matrix_and(mat : t_sl_matrix; wi, wj : NATURAL) RETURN STD_LOGIC IS
|
VARIABLE v_mat : t_sl_matrix(0 TO wi-1, 0 TO wj-1) := mat; -- map to fixed range
|
VARIABLE v_mat : t_sl_matrix(0 TO wi-1, 0 TO wj-1) := mat; -- map to fixed range
|
VARIABLE v_result : STD_LOGIC := '1';
|
VARIABLE v_result : STD_LOGIC := '1';
|
BEGIN
|
BEGIN
|
FOR I IN 0 TO wi-1 LOOP
|
FOR I IN 0 TO wi-1 LOOP
|
FOR J IN 0 TO wj-1 LOOP
|
FOR J IN 0 TO wj-1 LOOP
|
v_result := v_result AND v_mat(I,J);
|
v_result := v_result AND v_mat(I,J);
|
END LOOP;
|
END LOOP;
|
END LOOP;
|
END LOOP;
|
RETURN v_result;
|
RETURN v_result;
|
END;
|
END;
|
|
|
FUNCTION matrix_or(mat : t_sl_matrix; wi, wj : NATURAL) RETURN STD_LOGIC IS
|
FUNCTION matrix_or(mat : t_sl_matrix; wi, wj : NATURAL) RETURN STD_LOGIC IS
|
VARIABLE v_mat : t_sl_matrix(0 TO wi-1, 0 TO wj-1) := mat; -- map to fixed range
|
VARIABLE v_mat : t_sl_matrix(0 TO wi-1, 0 TO wj-1) := mat; -- map to fixed range
|
VARIABLE v_result : STD_LOGIC := '0';
|
VARIABLE v_result : STD_LOGIC := '0';
|
BEGIN
|
BEGIN
|
FOR I IN 0 TO wi-1 LOOP
|
FOR I IN 0 TO wi-1 LOOP
|
FOR J IN 0 TO wj-1 LOOP
|
FOR J IN 0 TO wj-1 LOOP
|
v_result := v_result OR v_mat(I,J);
|
v_result := v_result OR v_mat(I,J);
|
END LOOP;
|
END LOOP;
|
END LOOP;
|
END LOOP;
|
RETURN v_result;
|
RETURN v_result;
|
END;
|
END;
|
|
|
FUNCTION smallest(n, m : INTEGER) RETURN INTEGER IS
|
FUNCTION smallest(n, m : INTEGER) RETURN INTEGER IS
|
BEGIN
|
BEGIN
|
IF n < m THEN
|
IF n < m THEN
|
RETURN n;
|
RETURN n;
|
ELSE
|
ELSE
|
RETURN m;
|
RETURN m;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION smallest(n, m, l : INTEGER) RETURN INTEGER IS
|
FUNCTION smallest(n, m, l : INTEGER) RETURN INTEGER IS
|
VARIABLE v : NATURAL;
|
VARIABLE v : NATURAL;
|
BEGIN
|
BEGIN
|
v := n;
|
v := n;
|
IF v > m THEN v := m; END IF;
|
IF v > m THEN v := m; END IF;
|
IF v > l THEN v := l; END IF;
|
IF v > l THEN v := l; END IF;
|
RETURN v;
|
RETURN v;
|
END;
|
END;
|
|
|
FUNCTION smallest(n : t_natural_arr) RETURN NATURAL IS
|
FUNCTION smallest(n : t_natural_arr) RETURN NATURAL IS
|
VARIABLE m : NATURAL := 0;
|
VARIABLE m : NATURAL := 0;
|
BEGIN
|
BEGIN
|
FOR I IN n'RANGE LOOP
|
FOR I IN n'RANGE LOOP
|
IF n(I) < m THEN
|
IF n(I) < m THEN
|
m := n(I);
|
m := n(I);
|
END IF;
|
END IF;
|
END LOOP;
|
END LOOP;
|
RETURN m;
|
RETURN m;
|
END;
|
END;
|
|
|
FUNCTION largest(n, m : INTEGER) RETURN INTEGER IS
|
FUNCTION largest(n, m : INTEGER) RETURN INTEGER IS
|
BEGIN
|
BEGIN
|
IF n > m THEN
|
IF n > m THEN
|
RETURN n;
|
RETURN n;
|
ELSE
|
ELSE
|
RETURN m;
|
RETURN m;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION largest(n : t_natural_arr) RETURN NATURAL IS
|
FUNCTION largest(n : t_natural_arr) RETURN NATURAL IS
|
VARIABLE m : NATURAL := 0;
|
VARIABLE m : NATURAL := 0;
|
BEGIN
|
BEGIN
|
FOR I IN n'RANGE LOOP
|
FOR I IN n'RANGE LOOP
|
IF n(I) > m THEN
|
IF n(I) > m THEN
|
m := n(I);
|
m := n(I);
|
END IF;
|
END IF;
|
END LOOP;
|
END LOOP;
|
RETURN m;
|
RETURN m;
|
END;
|
END;
|
|
|
FUNCTION func_sum(n : t_natural_arr) RETURN NATURAL IS
|
FUNCTION func_sum(n : t_natural_arr) RETURN NATURAL IS
|
VARIABLE vS : NATURAL;
|
VARIABLE vS : NATURAL;
|
BEGIN
|
BEGIN
|
vS := 0;
|
vS := 0;
|
FOR I IN n'RANGE LOOP
|
FOR I IN n'RANGE LOOP
|
vS := vS + n(I);
|
vS := vS + n(I);
|
END LOOP;
|
END LOOP;
|
RETURN vS;
|
RETURN vS;
|
END;
|
END;
|
|
|
FUNCTION func_sum(n : t_nat_natural_arr) RETURN NATURAL IS
|
FUNCTION func_sum(n : t_nat_natural_arr) RETURN NATURAL IS
|
VARIABLE vN : t_natural_arr(n'LENGTH-1 DOWNTO 0);
|
VARIABLE vN : t_natural_arr(n'LENGTH-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vN := to_natural_arr(n);
|
vN := to_natural_arr(n);
|
RETURN func_sum(vN);
|
RETURN func_sum(vN);
|
END;
|
END;
|
|
|
FUNCTION func_product(n : t_natural_arr) RETURN NATURAL IS
|
FUNCTION func_product(n : t_natural_arr) RETURN NATURAL IS
|
VARIABLE vP : NATURAL;
|
VARIABLE vP : NATURAL;
|
BEGIN
|
BEGIN
|
vP := 1;
|
vP := 1;
|
FOR I IN n'RANGE LOOP
|
FOR I IN n'RANGE LOOP
|
vP := vP * n(I);
|
vP := vP * n(I);
|
END LOOP;
|
END LOOP;
|
RETURN vP;
|
RETURN vP;
|
END;
|
END;
|
|
|
FUNCTION func_product(n : t_nat_natural_arr) RETURN NATURAL IS
|
FUNCTION func_product(n : t_nat_natural_arr) RETURN NATURAL IS
|
VARIABLE vN : t_natural_arr(n'LENGTH-1 DOWNTO 0);
|
VARIABLE vN : t_natural_arr(n'LENGTH-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vN := to_natural_arr(n);
|
vN := to_natural_arr(n);
|
RETURN func_product(vN);
|
RETURN func_product(vN);
|
END;
|
END;
|
|
|
FUNCTION "+" (L, R: t_natural_arr) RETURN t_natural_arr IS
|
FUNCTION "+" (L, R: t_natural_arr) RETURN t_natural_arr IS
|
CONSTANT w : NATURAL := L'LENGTH;
|
CONSTANT w : NATURAL := L'LENGTH;
|
VARIABLE vL : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vL : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vR : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vR : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vL := L;
|
vL := L;
|
vR := R;
|
vR := R;
|
FOR I IN vL'RANGE LOOP
|
FOR I IN vL'RANGE LOOP
|
vP(I) := vL(I) + vR(I);
|
vP(I) := vL(I) + vR(I);
|
END LOOP;
|
END LOOP;
|
RETURN vP;
|
RETURN vP;
|
END;
|
END;
|
|
|
FUNCTION "+" (L: t_natural_arr; R : INTEGER) RETURN t_natural_arr IS
|
FUNCTION "+" (L: t_natural_arr; R : INTEGER) RETURN t_natural_arr IS
|
CONSTANT w : NATURAL := L'LENGTH;
|
CONSTANT w : NATURAL := L'LENGTH;
|
VARIABLE vL : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vL : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vL := L;
|
vL := L;
|
FOR I IN vL'RANGE LOOP
|
FOR I IN vL'RANGE LOOP
|
vP(I) := vL(I) + R;
|
vP(I) := vL(I) + R;
|
END LOOP;
|
END LOOP;
|
RETURN vP;
|
RETURN vP;
|
END;
|
END;
|
|
|
FUNCTION "+" (L: INTEGER; R : t_natural_arr) RETURN t_natural_arr IS
|
FUNCTION "+" (L: INTEGER; R : t_natural_arr) RETURN t_natural_arr IS
|
BEGIN
|
BEGIN
|
RETURN R + L;
|
RETURN R + L;
|
END;
|
END;
|
|
|
FUNCTION "-" (L, R: t_natural_arr) RETURN t_natural_arr IS
|
FUNCTION "-" (L, R: t_natural_arr) RETURN t_natural_arr IS
|
CONSTANT w : NATURAL := L'LENGTH;
|
CONSTANT w : NATURAL := L'LENGTH;
|
VARIABLE vL : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vL : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vR : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vR : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vL := L;
|
vL := L;
|
vR := R;
|
vR := R;
|
FOR I IN vL'RANGE LOOP
|
FOR I IN vL'RANGE LOOP
|
vP(I) := vL(I) - vR(I);
|
vP(I) := vL(I) - vR(I);
|
END LOOP;
|
END LOOP;
|
RETURN vP;
|
RETURN vP;
|
END;
|
END;
|
|
|
FUNCTION "-" (L, R: t_natural_arr) RETURN t_integer_arr IS
|
FUNCTION "-" (L, R: t_natural_arr) RETURN t_integer_arr IS
|
CONSTANT w : NATURAL := L'LENGTH;
|
CONSTANT w : NATURAL := L'LENGTH;
|
VARIABLE vL : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vL : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vR : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vR : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_integer_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_integer_arr(w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vL := L;
|
vL := L;
|
vR := R;
|
vR := R;
|
FOR I IN vL'RANGE LOOP
|
FOR I IN vL'RANGE LOOP
|
vP(I) := vL(I) - vR(I);
|
vP(I) := vL(I) - vR(I);
|
END LOOP;
|
END LOOP;
|
RETURN vP;
|
RETURN vP;
|
END;
|
END;
|
|
|
FUNCTION "-" (L: t_natural_arr; R : INTEGER) RETURN t_natural_arr IS
|
FUNCTION "-" (L: t_natural_arr; R : INTEGER) RETURN t_natural_arr IS
|
CONSTANT w : NATURAL := L'LENGTH;
|
CONSTANT w : NATURAL := L'LENGTH;
|
VARIABLE vL : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vL : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vL := L;
|
vL := L;
|
FOR I IN vL'RANGE LOOP
|
FOR I IN vL'RANGE LOOP
|
vP(I) := vL(I) - R;
|
vP(I) := vL(I) - R;
|
END LOOP;
|
END LOOP;
|
RETURN vP;
|
RETURN vP;
|
END;
|
END;
|
|
|
FUNCTION "-" (L: INTEGER; R : t_natural_arr) RETURN t_natural_arr IS
|
FUNCTION "-" (L: INTEGER; R : t_natural_arr) RETURN t_natural_arr IS
|
CONSTANT w : NATURAL := R'LENGTH;
|
CONSTANT w : NATURAL := R'LENGTH;
|
VARIABLE vR : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vR : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vR := R;
|
vR := R;
|
FOR I IN vR'RANGE LOOP
|
FOR I IN vR'RANGE LOOP
|
vP(I) := L - vR(I);
|
vP(I) := L - vR(I);
|
END LOOP;
|
END LOOP;
|
RETURN vP;
|
RETURN vP;
|
END;
|
END;
|
|
|
FUNCTION "*" (L, R: t_natural_arr) RETURN t_natural_arr IS
|
FUNCTION "*" (L, R: t_natural_arr) RETURN t_natural_arr IS
|
CONSTANT w : NATURAL := L'LENGTH;
|
CONSTANT w : NATURAL := L'LENGTH;
|
VARIABLE vL : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vL : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vR : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vR : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vL := L;
|
vL := L;
|
vR := R;
|
vR := R;
|
FOR I IN vL'RANGE LOOP
|
FOR I IN vL'RANGE LOOP
|
vP(I) := vL(I) * vR(I);
|
vP(I) := vL(I) * vR(I);
|
END LOOP;
|
END LOOP;
|
RETURN vP;
|
RETURN vP;
|
END;
|
END;
|
|
|
FUNCTION "*" (L: t_natural_arr; R : NATURAL) RETURN t_natural_arr IS
|
FUNCTION "*" (L: t_natural_arr; R : NATURAL) RETURN t_natural_arr IS
|
CONSTANT w : NATURAL := L'LENGTH;
|
CONSTANT w : NATURAL := L'LENGTH;
|
VARIABLE vL : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vL : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vL := L;
|
vL := L;
|
FOR I IN vL'RANGE LOOP
|
FOR I IN vL'RANGE LOOP
|
vP(I) := vL(I) * R;
|
vP(I) := vL(I) * R;
|
END LOOP;
|
END LOOP;
|
RETURN vP;
|
RETURN vP;
|
END;
|
END;
|
|
|
FUNCTION "*" (L: NATURAL; R : t_natural_arr) RETURN t_natural_arr IS
|
FUNCTION "*" (L: NATURAL; R : t_natural_arr) RETURN t_natural_arr IS
|
BEGIN
|
BEGIN
|
RETURN R * L;
|
RETURN R * L;
|
END;
|
END;
|
|
|
FUNCTION "/" (L, R: t_natural_arr) RETURN t_natural_arr IS
|
FUNCTION "/" (L, R: t_natural_arr) RETURN t_natural_arr IS
|
CONSTANT w : NATURAL := L'LENGTH;
|
CONSTANT w : NATURAL := L'LENGTH;
|
VARIABLE vL : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vL : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vR : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vR : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vL := L;
|
vL := L;
|
vR := R;
|
vR := R;
|
FOR I IN vL'RANGE LOOP
|
FOR I IN vL'RANGE LOOP
|
vP(I) := vL(I) / vR(I);
|
vP(I) := vL(I) / vR(I);
|
END LOOP;
|
END LOOP;
|
RETURN vP;
|
RETURN vP;
|
END;
|
END;
|
|
|
FUNCTION "/" (L: t_natural_arr; R : POSITIVE) RETURN t_natural_arr IS
|
FUNCTION "/" (L: t_natural_arr; R : POSITIVE) RETURN t_natural_arr IS
|
CONSTANT w : NATURAL := L'LENGTH;
|
CONSTANT w : NATURAL := L'LENGTH;
|
VARIABLE vL : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vL : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vL := L;
|
vL := L;
|
FOR I IN vL'RANGE LOOP
|
FOR I IN vL'RANGE LOOP
|
vP(I) := vL(I) / R;
|
vP(I) := vL(I) / R;
|
END LOOP;
|
END LOOP;
|
RETURN vP;
|
RETURN vP;
|
END;
|
END;
|
|
|
FUNCTION "/" (L: NATURAL; R : t_natural_arr) RETURN t_natural_arr IS
|
FUNCTION "/" (L: NATURAL; R : t_natural_arr) RETURN t_natural_arr IS
|
CONSTANT w : NATURAL := R'LENGTH;
|
CONSTANT w : NATURAL := R'LENGTH;
|
VARIABLE vR : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vR : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
VARIABLE vP : t_natural_arr(w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vR := R;
|
vR := R;
|
FOR I IN vR'RANGE LOOP
|
FOR I IN vR'RANGE LOOP
|
vP(I) := L / vR(I);
|
vP(I) := L / vR(I);
|
END LOOP;
|
END LOOP;
|
RETURN vP;
|
RETURN vP;
|
END;
|
END;
|
|
|
FUNCTION is_true(a : STD_LOGIC) RETURN BOOLEAN IS BEGIN IF a='1' THEN RETURN TRUE; ELSE RETURN FALSE; END IF; END;
|
FUNCTION is_true(a : STD_LOGIC) RETURN BOOLEAN IS BEGIN IF a='1' THEN RETURN TRUE; ELSE RETURN FALSE; END IF; END;
|
FUNCTION is_true(a : STD_LOGIC) RETURN NATURAL IS BEGIN IF a='1' THEN RETURN 1; ELSE RETURN 0; END IF; END;
|
FUNCTION is_true(a : STD_LOGIC) RETURN NATURAL IS BEGIN IF a='1' THEN RETURN 1; ELSE RETURN 0; END IF; END;
|
FUNCTION is_true(a : BOOLEAN) RETURN STD_LOGIC IS BEGIN IF a=TRUE THEN RETURN '1'; ELSE RETURN '0'; END IF; END;
|
FUNCTION is_true(a : BOOLEAN) RETURN STD_LOGIC IS BEGIN IF a=TRUE THEN RETURN '1'; ELSE RETURN '0'; END IF; END;
|
FUNCTION is_true(a : BOOLEAN) RETURN NATURAL IS BEGIN IF a=TRUE THEN RETURN 1; ELSE RETURN 0; END IF; END;
|
FUNCTION is_true(a : BOOLEAN) RETURN NATURAL IS BEGIN IF a=TRUE THEN RETURN 1; ELSE RETURN 0; END IF; END;
|
FUNCTION is_true(a : INTEGER) RETURN BOOLEAN IS BEGIN IF a/=0 THEN RETURN TRUE; ELSE RETURN FALSE; END IF; END;
|
FUNCTION is_true(a : INTEGER) RETURN BOOLEAN IS BEGIN IF a/=0 THEN RETURN TRUE; ELSE RETURN FALSE; END IF; END;
|
FUNCTION is_true(a : INTEGER) RETURN STD_LOGIC IS BEGIN IF a/=0 THEN RETURN '1'; ELSE RETURN '0'; END IF; END;
|
FUNCTION is_true(a : INTEGER) RETURN STD_LOGIC IS BEGIN IF a/=0 THEN RETURN '1'; ELSE RETURN '0'; END IF; END;
|
|
|
FUNCTION sel_a_b(sel, a, b : INTEGER) RETURN INTEGER IS
|
FUNCTION sel_a_b(sel, a, b : INTEGER) RETURN INTEGER IS
|
BEGIN
|
BEGIN
|
IF sel /= 0 THEN
|
IF sel /= 0 THEN
|
RETURN a;
|
RETURN a;
|
ELSE
|
ELSE
|
RETURN b;
|
RETURN b;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION sel_a_b(sel, a, b : BOOLEAN) RETURN BOOLEAN IS
|
FUNCTION sel_a_b(sel, a, b : BOOLEAN) RETURN BOOLEAN IS
|
BEGIN
|
BEGIN
|
IF sel = TRUE THEN
|
IF sel = TRUE THEN
|
RETURN a;
|
RETURN a;
|
ELSE
|
ELSE
|
RETURN b;
|
RETURN b;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : INTEGER) RETURN INTEGER IS
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : INTEGER) RETURN INTEGER IS
|
BEGIN
|
BEGIN
|
IF sel = TRUE THEN
|
IF sel = TRUE THEN
|
RETURN a;
|
RETURN a;
|
ELSE
|
ELSE
|
RETURN b;
|
RETURN b;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : REAL) RETURN REAL IS
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : REAL) RETURN REAL IS
|
BEGIN
|
BEGIN
|
IF sel = TRUE THEN
|
IF sel = TRUE THEN
|
RETURN a;
|
RETURN a;
|
ELSE
|
ELSE
|
RETURN b;
|
RETURN b;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : STD_LOGIC) RETURN STD_LOGIC IS
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : STD_LOGIC) RETURN STD_LOGIC IS
|
BEGIN
|
BEGIN
|
IF sel = TRUE THEN
|
IF sel = TRUE THEN
|
RETURN a;
|
RETURN a;
|
ELSE
|
ELSE
|
RETURN b;
|
RETURN b;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION sel_a_b(sel : INTEGER; a, b : STD_LOGIC) RETURN STD_LOGIC IS
|
FUNCTION sel_a_b(sel : INTEGER; a, b : STD_LOGIC) RETURN STD_LOGIC IS
|
BEGIN
|
BEGIN
|
IF sel /= 0 THEN
|
IF sel /= 0 THEN
|
RETURN a;
|
RETURN a;
|
ELSE
|
ELSE
|
RETURN b;
|
RETURN b;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION sel_a_b(sel : INTEGER; a, b : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION sel_a_b(sel : INTEGER; a, b : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
IF sel /= 0 THEN
|
IF sel /= 0 THEN
|
RETURN a;
|
RETURN a;
|
ELSE
|
ELSE
|
RETURN b;
|
RETURN b;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
IF sel = TRUE THEN
|
IF sel = TRUE THEN
|
RETURN a;
|
RETURN a;
|
ELSE
|
ELSE
|
RETURN b;
|
RETURN b;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : SIGNED) RETURN SIGNED IS
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : SIGNED) RETURN SIGNED IS
|
BEGIN
|
BEGIN
|
IF sel = TRUE THEN
|
IF sel = TRUE THEN
|
RETURN a;
|
RETURN a;
|
ELSE
|
ELSE
|
RETURN b;
|
RETURN b;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : UNSIGNED) RETURN UNSIGNED IS
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : UNSIGNED) RETURN UNSIGNED IS
|
BEGIN
|
BEGIN
|
IF sel = TRUE THEN
|
IF sel = TRUE THEN
|
RETURN a;
|
RETURN a;
|
ELSE
|
ELSE
|
RETURN b;
|
RETURN b;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : t_integer_arr) RETURN t_integer_arr IS
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : t_integer_arr) RETURN t_integer_arr IS
|
BEGIN
|
BEGIN
|
IF sel = TRUE THEN
|
IF sel = TRUE THEN
|
RETURN a;
|
RETURN a;
|
ELSE
|
ELSE
|
RETURN b;
|
RETURN b;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : t_natural_arr) RETURN t_natural_arr IS
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : t_natural_arr) RETURN t_natural_arr IS
|
BEGIN
|
BEGIN
|
IF sel = TRUE THEN
|
IF sel = TRUE THEN
|
RETURN a;
|
RETURN a;
|
ELSE
|
ELSE
|
RETURN b;
|
RETURN b;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : t_nat_integer_arr) RETURN t_nat_integer_arr IS
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : t_nat_integer_arr) RETURN t_nat_integer_arr IS
|
BEGIN
|
BEGIN
|
IF sel = TRUE THEN
|
IF sel = TRUE THEN
|
RETURN a;
|
RETURN a;
|
ELSE
|
ELSE
|
RETURN b;
|
RETURN b;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : t_nat_natural_arr) RETURN t_nat_natural_arr IS
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : t_nat_natural_arr) RETURN t_nat_natural_arr IS
|
BEGIN
|
BEGIN
|
IF sel = TRUE THEN
|
IF sel = TRUE THEN
|
RETURN a;
|
RETURN a;
|
ELSE
|
ELSE
|
RETURN b;
|
RETURN b;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : STRING) RETURN STRING IS
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : STRING) RETURN STRING IS
|
BEGIN
|
BEGIN
|
IF sel = TRUE THEN
|
IF sel = TRUE THEN
|
RETURN a;
|
RETURN a;
|
ELSE
|
ELSE
|
RETURN b;
|
RETURN b;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION sel_a_b(sel : INTEGER; a, b : STRING) RETURN STRING IS
|
FUNCTION sel_a_b(sel : INTEGER; a, b : STRING) RETURN STRING IS
|
BEGIN
|
BEGIN
|
IF sel /= 0 THEN
|
IF sel /= 0 THEN
|
RETURN a;
|
RETURN a;
|
ELSE
|
ELSE
|
RETURN b;
|
RETURN b;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : TIME) RETURN TIME IS
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : TIME) RETURN TIME IS
|
BEGIN
|
BEGIN
|
IF sel = TRUE THEN
|
IF sel = TRUE THEN
|
RETURN a;
|
RETURN a;
|
ELSE
|
ELSE
|
RETURN b;
|
RETURN b;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : SEVERITY_LEVEL) RETURN SEVERITY_LEVEL IS
|
FUNCTION sel_a_b(sel : BOOLEAN; a, b : SEVERITY_LEVEL) RETURN SEVERITY_LEVEL IS
|
BEGIN
|
BEGIN
|
IF sel = TRUE THEN
|
IF sel = TRUE THEN
|
RETURN a;
|
RETURN a;
|
ELSE
|
ELSE
|
RETURN b;
|
RETURN b;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
-- sel_n : boolean
|
-- sel_n : boolean
|
FUNCTION sel_n(sel : NATURAL; a, b, c : BOOLEAN) RETURN BOOLEAN IS
|
FUNCTION sel_n(sel : NATURAL; a, b, c : BOOLEAN) RETURN BOOLEAN IS
|
CONSTANT c_arr : t_nat_boolean_arr := (a, b, c);
|
CONSTANT c_arr : t_nat_boolean_arr := (a, b, c);
|
BEGIN
|
BEGIN
|
RETURN c_arr(sel);
|
RETURN c_arr(sel);
|
END;
|
END;
|
|
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d : BOOLEAN) RETURN BOOLEAN IS
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d : BOOLEAN) RETURN BOOLEAN IS
|
CONSTANT c_arr : t_nat_boolean_arr := (a, b, c, d);
|
CONSTANT c_arr : t_nat_boolean_arr := (a, b, c, d);
|
BEGIN
|
BEGIN
|
RETURN c_arr(sel);
|
RETURN c_arr(sel);
|
END;
|
END;
|
|
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e : BOOLEAN) RETURN BOOLEAN IS
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e : BOOLEAN) RETURN BOOLEAN IS
|
CONSTANT c_arr : t_nat_boolean_arr := (a, b, c, d, e);
|
CONSTANT c_arr : t_nat_boolean_arr := (a, b, c, d, e);
|
BEGIN
|
BEGIN
|
RETURN c_arr(sel);
|
RETURN c_arr(sel);
|
END;
|
END;
|
|
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f : BOOLEAN) RETURN BOOLEAN IS
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f : BOOLEAN) RETURN BOOLEAN IS
|
CONSTANT c_arr : t_nat_boolean_arr := (a, b, c, d, e, f);
|
CONSTANT c_arr : t_nat_boolean_arr := (a, b, c, d, e, f);
|
BEGIN
|
BEGIN
|
RETURN c_arr(sel);
|
RETURN c_arr(sel);
|
END;
|
END;
|
|
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g : BOOLEAN) RETURN BOOLEAN IS
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g : BOOLEAN) RETURN BOOLEAN IS
|
CONSTANT c_arr : t_nat_boolean_arr := (a, b, c, d, e, f, g);
|
CONSTANT c_arr : t_nat_boolean_arr := (a, b, c, d, e, f, g);
|
BEGIN
|
BEGIN
|
RETURN c_arr(sel);
|
RETURN c_arr(sel);
|
END;
|
END;
|
|
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h : BOOLEAN) RETURN BOOLEAN IS
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h : BOOLEAN) RETURN BOOLEAN IS
|
CONSTANT c_arr : t_nat_boolean_arr := (a, b, c, d, e, f, g, h);
|
CONSTANT c_arr : t_nat_boolean_arr := (a, b, c, d, e, f, g, h);
|
BEGIN
|
BEGIN
|
RETURN c_arr(sel);
|
RETURN c_arr(sel);
|
END;
|
END;
|
|
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i : BOOLEAN) RETURN BOOLEAN IS
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i : BOOLEAN) RETURN BOOLEAN IS
|
CONSTANT c_arr : t_nat_boolean_arr := (a, b, c, d, e, f, g, h, i);
|
CONSTANT c_arr : t_nat_boolean_arr := (a, b, c, d, e, f, g, h, i);
|
BEGIN
|
BEGIN
|
RETURN c_arr(sel);
|
RETURN c_arr(sel);
|
END;
|
END;
|
|
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i, j : BOOLEAN) RETURN BOOLEAN IS
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i, j : BOOLEAN) RETURN BOOLEAN IS
|
CONSTANT c_arr : t_nat_boolean_arr := (a, b, c, d, e, f, g, h, i, j);
|
CONSTANT c_arr : t_nat_boolean_arr := (a, b, c, d, e, f, g, h, i, j);
|
BEGIN
|
BEGIN
|
RETURN c_arr(sel);
|
RETURN c_arr(sel);
|
END;
|
END;
|
|
|
-- sel_n : integer
|
-- sel_n : integer
|
FUNCTION sel_n(sel : NATURAL; a, b, c : INTEGER) RETURN INTEGER IS
|
FUNCTION sel_n(sel : NATURAL; a, b, c : INTEGER) RETURN INTEGER IS
|
CONSTANT c_arr : t_nat_integer_arr := (a, b, c);
|
CONSTANT c_arr : t_nat_integer_arr := (a, b, c);
|
BEGIN
|
BEGIN
|
RETURN c_arr(sel);
|
RETURN c_arr(sel);
|
END;
|
END;
|
|
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d : INTEGER) RETURN INTEGER IS
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d : INTEGER) RETURN INTEGER IS
|
CONSTANT c_arr : t_nat_integer_arr := (a, b, c, d);
|
CONSTANT c_arr : t_nat_integer_arr := (a, b, c, d);
|
BEGIN
|
BEGIN
|
RETURN c_arr(sel);
|
RETURN c_arr(sel);
|
END;
|
END;
|
|
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e : INTEGER) RETURN INTEGER IS
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e : INTEGER) RETURN INTEGER IS
|
CONSTANT c_arr : t_nat_integer_arr := (a, b, c, d, e);
|
CONSTANT c_arr : t_nat_integer_arr := (a, b, c, d, e);
|
BEGIN
|
BEGIN
|
RETURN c_arr(sel);
|
RETURN c_arr(sel);
|
END;
|
END;
|
|
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f : INTEGER) RETURN INTEGER IS
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f : INTEGER) RETURN INTEGER IS
|
CONSTANT c_arr : t_nat_integer_arr := (a, b, c, d, e, f);
|
CONSTANT c_arr : t_nat_integer_arr := (a, b, c, d, e, f);
|
BEGIN
|
BEGIN
|
RETURN c_arr(sel);
|
RETURN c_arr(sel);
|
END;
|
END;
|
|
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g : INTEGER) RETURN INTEGER IS
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g : INTEGER) RETURN INTEGER IS
|
CONSTANT c_arr : t_nat_integer_arr := (a, b, c, d, e, f, g);
|
CONSTANT c_arr : t_nat_integer_arr := (a, b, c, d, e, f, g);
|
BEGIN
|
BEGIN
|
RETURN c_arr(sel);
|
RETURN c_arr(sel);
|
END;
|
END;
|
|
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h : INTEGER) RETURN INTEGER IS
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h : INTEGER) RETURN INTEGER IS
|
CONSTANT c_arr : t_nat_integer_arr := (a, b, c, d, e, f, g, h);
|
CONSTANT c_arr : t_nat_integer_arr := (a, b, c, d, e, f, g, h);
|
BEGIN
|
BEGIN
|
RETURN c_arr(sel);
|
RETURN c_arr(sel);
|
END;
|
END;
|
|
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i : INTEGER) RETURN INTEGER IS
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i : INTEGER) RETURN INTEGER IS
|
CONSTANT c_arr : t_nat_integer_arr := (a, b, c, d, e, f, g, h, i);
|
CONSTANT c_arr : t_nat_integer_arr := (a, b, c, d, e, f, g, h, i);
|
BEGIN
|
BEGIN
|
RETURN c_arr(sel);
|
RETURN c_arr(sel);
|
END;
|
END;
|
|
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i, j : INTEGER) RETURN INTEGER IS
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i, j : INTEGER) RETURN INTEGER IS
|
CONSTANT c_arr : t_nat_integer_arr := (a, b, c, d, e, f, g, h, i, j);
|
CONSTANT c_arr : t_nat_integer_arr := (a, b, c, d, e, f, g, h, i, j);
|
BEGIN
|
BEGIN
|
RETURN c_arr(sel);
|
RETURN c_arr(sel);
|
END;
|
END;
|
|
|
-- sel_n : string
|
-- sel_n : string
|
FUNCTION sel_n(sel : NATURAL; a, b : STRING) RETURN STRING IS BEGIN IF sel=0 THEN RETURN a ; ELSE RETURN b; END IF; END;
|
FUNCTION sel_n(sel : NATURAL; a, b : STRING) RETURN STRING IS BEGIN IF sel=0 THEN RETURN a ; ELSE RETURN b; END IF; END;
|
FUNCTION sel_n(sel : NATURAL; a, b, c : STRING) RETURN STRING IS BEGIN IF sel<2 THEN RETURN sel_n(sel, a, b ); ELSE RETURN c; END IF; END;
|
FUNCTION sel_n(sel : NATURAL; a, b, c : STRING) RETURN STRING IS BEGIN IF sel<2 THEN RETURN sel_n(sel, a, b ); ELSE RETURN c; END IF; END;
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d : STRING) RETURN STRING IS BEGIN IF sel<3 THEN RETURN sel_n(sel, a, b, c ); ELSE RETURN d; END IF; END;
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d : STRING) RETURN STRING IS BEGIN IF sel<3 THEN RETURN sel_n(sel, a, b, c ); ELSE RETURN d; END IF; END;
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e : STRING) RETURN STRING IS BEGIN IF sel<4 THEN RETURN sel_n(sel, a, b, c, d ); ELSE RETURN e; END IF; END;
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e : STRING) RETURN STRING IS BEGIN IF sel<4 THEN RETURN sel_n(sel, a, b, c, d ); ELSE RETURN e; END IF; END;
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f : STRING) RETURN STRING IS BEGIN IF sel<5 THEN RETURN sel_n(sel, a, b, c, d, e ); ELSE RETURN f; END IF; END;
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f : STRING) RETURN STRING IS BEGIN IF sel<5 THEN RETURN sel_n(sel, a, b, c, d, e ); ELSE RETURN f; END IF; END;
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g : STRING) RETURN STRING IS BEGIN IF sel<6 THEN RETURN sel_n(sel, a, b, c, d, e, f ); ELSE RETURN g; END IF; END;
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g : STRING) RETURN STRING IS BEGIN IF sel<6 THEN RETURN sel_n(sel, a, b, c, d, e, f ); ELSE RETURN g; END IF; END;
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h : STRING) RETURN STRING IS BEGIN IF sel<7 THEN RETURN sel_n(sel, a, b, c, d, e, f, g ); ELSE RETURN h; END IF; END;
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h : STRING) RETURN STRING IS BEGIN IF sel<7 THEN RETURN sel_n(sel, a, b, c, d, e, f, g ); ELSE RETURN h; END IF; END;
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i : STRING) RETURN STRING IS BEGIN IF sel<8 THEN RETURN sel_n(sel, a, b, c, d, e, f, g, h ); ELSE RETURN i; END IF; END;
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i : STRING) RETURN STRING IS BEGIN IF sel<8 THEN RETURN sel_n(sel, a, b, c, d, e, f, g, h ); ELSE RETURN i; END IF; END;
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i, j : STRING) RETURN STRING IS BEGIN IF sel<9 THEN RETURN sel_n(sel, a, b, c, d, e, f, g, h, i); ELSE RETURN j; END IF; END;
|
FUNCTION sel_n(sel : NATURAL; a, b, c, d, e, f, g, h, i, j : STRING) RETURN STRING IS BEGIN IF sel<9 THEN RETURN sel_n(sel, a, b, c, d, e, f, g, h, i); ELSE RETURN j; END IF; END;
|
|
|
FUNCTION array_init(init : STD_LOGIC; nof : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION array_init(init : STD_LOGIC; nof : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
VARIABLE v_arr : STD_LOGIC_VECTOR(0 TO nof-1);
|
VARIABLE v_arr : STD_LOGIC_VECTOR(0 TO nof-1);
|
BEGIN
|
BEGIN
|
FOR I IN v_arr'RANGE LOOP
|
FOR I IN v_arr'RANGE LOOP
|
v_arr(I) := init;
|
v_arr(I) := init;
|
END LOOP;
|
END LOOP;
|
RETURN v_arr;
|
RETURN v_arr;
|
END;
|
END;
|
|
|
FUNCTION array_init(init, nof : NATURAL) RETURN t_natural_arr IS
|
FUNCTION array_init(init, nof : NATURAL) RETURN t_natural_arr IS
|
VARIABLE v_arr : t_natural_arr(0 TO nof-1);
|
VARIABLE v_arr : t_natural_arr(0 TO nof-1);
|
BEGIN
|
BEGIN
|
FOR I IN v_arr'RANGE LOOP
|
FOR I IN v_arr'RANGE LOOP
|
v_arr(I) := init;
|
v_arr(I) := init;
|
END LOOP;
|
END LOOP;
|
RETURN v_arr;
|
RETURN v_arr;
|
END;
|
END;
|
|
|
FUNCTION array_init(init, nof : NATURAL) RETURN t_nat_natural_arr IS
|
FUNCTION array_init(init, nof : NATURAL) RETURN t_nat_natural_arr IS
|
VARIABLE v_arr : t_nat_natural_arr(0 TO nof-1);
|
VARIABLE v_arr : t_nat_natural_arr(0 TO nof-1);
|
BEGIN
|
BEGIN
|
FOR I IN v_arr'RANGE LOOP
|
FOR I IN v_arr'RANGE LOOP
|
v_arr(I) := init;
|
v_arr(I) := init;
|
END LOOP;
|
END LOOP;
|
RETURN v_arr;
|
RETURN v_arr;
|
END;
|
END;
|
|
|
FUNCTION array_init(init, nof, incr : NATURAL) RETURN t_natural_arr IS
|
FUNCTION array_init(init, nof, incr : NATURAL) RETURN t_natural_arr IS
|
VARIABLE v_arr : t_natural_arr(0 TO nof-1);
|
VARIABLE v_arr : t_natural_arr(0 TO nof-1);
|
VARIABLE v_i : NATURAL;
|
VARIABLE v_i : NATURAL;
|
BEGIN
|
BEGIN
|
v_i := 0;
|
v_i := 0;
|
FOR I IN v_arr'RANGE LOOP
|
FOR I IN v_arr'RANGE LOOP
|
v_arr(I) := init + v_i * incr;
|
v_arr(I) := init + v_i * incr;
|
v_i := v_i + 1;
|
v_i := v_i + 1;
|
END LOOP;
|
END LOOP;
|
RETURN v_arr;
|
RETURN v_arr;
|
END;
|
END;
|
|
|
FUNCTION array_init(init, nof, incr : NATURAL) RETURN t_nat_natural_arr IS
|
FUNCTION array_init(init, nof, incr : NATURAL) RETURN t_nat_natural_arr IS
|
VARIABLE v_arr : t_nat_natural_arr(0 TO nof-1);
|
VARIABLE v_arr : t_nat_natural_arr(0 TO nof-1);
|
VARIABLE v_i : NATURAL;
|
VARIABLE v_i : NATURAL;
|
BEGIN
|
BEGIN
|
v_i := 0;
|
v_i := 0;
|
FOR I IN v_arr'RANGE LOOP
|
FOR I IN v_arr'RANGE LOOP
|
v_arr(I) := init + v_i * incr;
|
v_arr(I) := init + v_i * incr;
|
v_i := v_i + 1;
|
v_i := v_i + 1;
|
END LOOP;
|
END LOOP;
|
RETURN v_arr;
|
RETURN v_arr;
|
END;
|
END;
|
|
|
FUNCTION array_init(init, nof, incr : INTEGER) RETURN t_slv_16_arr IS
|
FUNCTION array_init(init, nof, incr : INTEGER) RETURN t_slv_16_arr IS
|
VARIABLE v_arr : t_slv_16_arr(0 TO nof-1);
|
VARIABLE v_arr : t_slv_16_arr(0 TO nof-1);
|
VARIABLE v_i : NATURAL;
|
VARIABLE v_i : NATURAL;
|
BEGIN
|
BEGIN
|
v_i := 0;
|
v_i := 0;
|
FOR I IN v_arr'RANGE LOOP
|
FOR I IN v_arr'RANGE LOOP
|
v_arr(I) := TO_SVEC(init + v_i * incr, 16);
|
v_arr(I) := TO_SVEC(init + v_i * incr, 16);
|
v_i := v_i + 1;
|
v_i := v_i + 1;
|
END LOOP;
|
END LOOP;
|
RETURN v_arr;
|
RETURN v_arr;
|
END;
|
END;
|
|
|
FUNCTION array_init(init, nof, incr : INTEGER) RETURN t_slv_32_arr IS
|
FUNCTION array_init(init, nof, incr : INTEGER) RETURN t_slv_32_arr IS
|
VARIABLE v_arr : t_slv_32_arr(0 TO nof-1);
|
VARIABLE v_arr : t_slv_32_arr(0 TO nof-1);
|
VARIABLE v_i : NATURAL;
|
VARIABLE v_i : NATURAL;
|
BEGIN
|
BEGIN
|
v_i := 0;
|
v_i := 0;
|
FOR I IN v_arr'RANGE LOOP
|
FOR I IN v_arr'RANGE LOOP
|
v_arr(I) := TO_SVEC(init + v_i * incr, 32);
|
v_arr(I) := TO_SVEC(init + v_i * incr, 32);
|
v_i := v_i + 1;
|
v_i := v_i + 1;
|
END LOOP;
|
END LOOP;
|
RETURN v_arr;
|
RETURN v_arr;
|
END;
|
END;
|
|
|
FUNCTION array_init(init, nof, width : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION array_init(init, nof, width : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
VARIABLE v_arr : STD_LOGIC_VECTOR(nof*width-1 DOWNTO 0);
|
VARIABLE v_arr : STD_LOGIC_VECTOR(nof*width-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
FOR I IN 0 TO nof-1 LOOP
|
FOR I IN 0 TO nof-1 LOOP
|
v_arr(width*(I+1)-1 DOWNTO width*I) := TO_UVEC(init, width);
|
v_arr(width*(I+1)-1 DOWNTO width*I) := TO_UVEC(init, width);
|
END LOOP;
|
END LOOP;
|
RETURN v_arr;
|
RETURN v_arr;
|
END;
|
END;
|
|
|
FUNCTION array_init(init, nof, width, incr : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION array_init(init, nof, width, incr : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
VARIABLE v_arr : STD_LOGIC_VECTOR(nof*width-1 DOWNTO 0);
|
VARIABLE v_arr : STD_LOGIC_VECTOR(nof*width-1 DOWNTO 0);
|
VARIABLE v_i : NATURAL;
|
VARIABLE v_i : NATURAL;
|
BEGIN
|
BEGIN
|
v_i := 0;
|
v_i := 0;
|
FOR I IN 0 TO nof-1 LOOP
|
FOR I IN 0 TO nof-1 LOOP
|
v_arr(width*(I+1)-1 DOWNTO width*I) := TO_UVEC(init + v_i * incr, width);
|
v_arr(width*(I+1)-1 DOWNTO width*I) := TO_UVEC(init + v_i * incr, width);
|
v_i := v_i + 1;
|
v_i := v_i + 1;
|
END LOOP;
|
END LOOP;
|
RETURN v_arr;
|
RETURN v_arr;
|
END;
|
END;
|
|
|
FUNCTION array_sinit(init :INTEGER; nof, width : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION array_sinit(init :INTEGER; nof, width : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
VARIABLE v_arr : STD_LOGIC_VECTOR(nof*width-1 DOWNTO 0);
|
VARIABLE v_arr : STD_LOGIC_VECTOR(nof*width-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
FOR I IN 0 TO nof-1 LOOP
|
FOR I IN 0 TO nof-1 LOOP
|
v_arr(width*(I+1)-1 DOWNTO width*I) := TO_SVEC(init, width);
|
v_arr(width*(I+1)-1 DOWNTO width*I) := TO_SVEC(init, width);
|
END LOOP;
|
END LOOP;
|
RETURN v_arr;
|
RETURN v_arr;
|
END;
|
END;
|
|
|
FUNCTION init_slv_64_matrix(nof_a, nof_b, k : INTEGER) RETURN t_slv_64_matrix IS
|
FUNCTION init_slv_64_matrix(nof_a, nof_b, k : INTEGER) RETURN t_slv_64_matrix IS
|
VARIABLE v_mat : t_slv_64_matrix(nof_a-1 DOWNTO 0, nof_b-1 DOWNTO 0);
|
VARIABLE v_mat : t_slv_64_matrix(nof_a-1 DOWNTO 0, nof_b-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
FOR I IN 0 TO nof_a-1 LOOP
|
FOR I IN 0 TO nof_a-1 LOOP
|
FOR J IN 0 TO nof_b-1 LOOP
|
FOR J IN 0 TO nof_b-1 LOOP
|
v_mat(I,J) := TO_SVEC(k, 64);
|
v_mat(I,J) := TO_SVEC(k, 64);
|
END LOOP;
|
END LOOP;
|
END LOOP;
|
END LOOP;
|
RETURN v_mat;
|
RETURN v_mat;
|
END;
|
END;
|
|
|
|
|
-- Support concatenation of up to 7 slv into 1 slv
|
-- Support concatenation of up to 7 slv into 1 slv
|
FUNCTION func_slv_concat(use_a, use_b, use_c, use_d, use_e, use_f, use_g : BOOLEAN; a, b, c, d, e, f, g : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION func_slv_concat(use_a, use_b, use_c, use_d, use_e, use_f, use_g : BOOLEAN; a, b, c, d, e, f, g : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
CONSTANT c_max_w : NATURAL := a'LENGTH + b'LENGTH + c'LENGTH + d'LENGTH + e'LENGTH + f'LENGTH + g'LENGTH;
|
CONSTANT c_max_w : NATURAL := a'LENGTH + b'LENGTH + c'LENGTH + d'LENGTH + e'LENGTH + f'LENGTH + g'LENGTH;
|
VARIABLE v_res : STD_LOGIC_VECTOR(c_max_w-1 DOWNTO 0) := (OTHERS=>'0');
|
VARIABLE v_res : STD_LOGIC_VECTOR(c_max_w-1 DOWNTO 0) := (OTHERS=>'0');
|
VARIABLE v_len : NATURAL := 0;
|
VARIABLE v_len : NATURAL := 0;
|
BEGIN
|
BEGIN
|
IF use_a = TRUE THEN v_res(a'LENGTH-1 + v_len DOWNTO v_len) := a; v_len := v_len + a'LENGTH; END IF;
|
IF use_a = TRUE THEN v_res(a'LENGTH-1 + v_len DOWNTO v_len) := a; v_len := v_len + a'LENGTH; END IF;
|
IF use_b = TRUE THEN v_res(b'LENGTH-1 + v_len DOWNTO v_len) := b; v_len := v_len + b'LENGTH; END IF;
|
IF use_b = TRUE THEN v_res(b'LENGTH-1 + v_len DOWNTO v_len) := b; v_len := v_len + b'LENGTH; END IF;
|
IF use_c = TRUE THEN v_res(c'LENGTH-1 + v_len DOWNTO v_len) := c; v_len := v_len + c'LENGTH; END IF;
|
IF use_c = TRUE THEN v_res(c'LENGTH-1 + v_len DOWNTO v_len) := c; v_len := v_len + c'LENGTH; END IF;
|
IF use_d = TRUE THEN v_res(d'LENGTH-1 + v_len DOWNTO v_len) := d; v_len := v_len + d'LENGTH; END IF;
|
IF use_d = TRUE THEN v_res(d'LENGTH-1 + v_len DOWNTO v_len) := d; v_len := v_len + d'LENGTH; END IF;
|
IF use_e = TRUE THEN v_res(e'LENGTH-1 + v_len DOWNTO v_len) := e; v_len := v_len + e'LENGTH; END IF;
|
IF use_e = TRUE THEN v_res(e'LENGTH-1 + v_len DOWNTO v_len) := e; v_len := v_len + e'LENGTH; END IF;
|
IF use_f = TRUE THEN v_res(f'LENGTH-1 + v_len DOWNTO v_len) := f; v_len := v_len + f'LENGTH; END IF;
|
IF use_f = TRUE THEN v_res(f'LENGTH-1 + v_len DOWNTO v_len) := f; v_len := v_len + f'LENGTH; END IF;
|
IF use_g = TRUE THEN v_res(g'LENGTH-1 + v_len DOWNTO v_len) := g; v_len := v_len + g'LENGTH; END IF;
|
IF use_g = TRUE THEN v_res(g'LENGTH-1 + v_len DOWNTO v_len) := g; v_len := v_len + g'LENGTH; END IF;
|
RETURN v_res(v_len-1 DOWNTO 0);
|
RETURN v_res(v_len-1 DOWNTO 0);
|
END func_slv_concat;
|
END func_slv_concat;
|
|
|
FUNCTION func_slv_concat(use_a, use_b, use_c, use_d, use_e, use_f : BOOLEAN; a, b, c, d, e, f : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION func_slv_concat(use_a, use_b, use_c, use_d, use_e, use_f : BOOLEAN; a, b, c, d, e, f : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN func_slv_concat(use_a, use_b, use_c, use_d, use_e, use_f, FALSE, a, b, c, d, e, f, "0");
|
RETURN func_slv_concat(use_a, use_b, use_c, use_d, use_e, use_f, FALSE, a, b, c, d, e, f, "0");
|
END func_slv_concat;
|
END func_slv_concat;
|
|
|
FUNCTION func_slv_concat(use_a, use_b, use_c, use_d, use_e : BOOLEAN; a, b, c, d, e : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION func_slv_concat(use_a, use_b, use_c, use_d, use_e : BOOLEAN; a, b, c, d, e : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN func_slv_concat(use_a, use_b, use_c, use_d, use_e, FALSE, FALSE, a, b, c, d, e, "0", "0");
|
RETURN func_slv_concat(use_a, use_b, use_c, use_d, use_e, FALSE, FALSE, a, b, c, d, e, "0", "0");
|
END func_slv_concat;
|
END func_slv_concat;
|
|
|
FUNCTION func_slv_concat(use_a, use_b, use_c, use_d : BOOLEAN; a, b, c, d : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION func_slv_concat(use_a, use_b, use_c, use_d : BOOLEAN; a, b, c, d : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN func_slv_concat(use_a, use_b, use_c, use_d, FALSE, FALSE, FALSE, a, b, c, d, "0", "0", "0");
|
RETURN func_slv_concat(use_a, use_b, use_c, use_d, FALSE, FALSE, FALSE, a, b, c, d, "0", "0", "0");
|
END func_slv_concat;
|
END func_slv_concat;
|
|
|
FUNCTION func_slv_concat(use_a, use_b, use_c : BOOLEAN; a, b, c : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION func_slv_concat(use_a, use_b, use_c : BOOLEAN; a, b, c : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN func_slv_concat(use_a, use_b, use_c, FALSE, FALSE, FALSE, FALSE, a, b, c, "0", "0", "0", "0");
|
RETURN func_slv_concat(use_a, use_b, use_c, FALSE, FALSE, FALSE, FALSE, a, b, c, "0", "0", "0", "0");
|
END func_slv_concat;
|
END func_slv_concat;
|
|
|
FUNCTION func_slv_concat(use_a, use_b : BOOLEAN; a, b : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION func_slv_concat(use_a, use_b : BOOLEAN; a, b : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN func_slv_concat(use_a, use_b, FALSE, FALSE, FALSE, FALSE, FALSE, a, b, "0", "0", "0", "0", "0");
|
RETURN func_slv_concat(use_a, use_b, FALSE, FALSE, FALSE, FALSE, FALSE, a, b, "0", "0", "0", "0", "0");
|
END func_slv_concat;
|
END func_slv_concat;
|
|
|
FUNCTION func_slv_concat_w(use_a, use_b, use_c, use_d, use_e, use_f, use_g : BOOLEAN; a_w, b_w, c_w, d_w, e_w, f_w, g_w : NATURAL) RETURN NATURAL IS
|
FUNCTION func_slv_concat_w(use_a, use_b, use_c, use_d, use_e, use_f, use_g : BOOLEAN; a_w, b_w, c_w, d_w, e_w, f_w, g_w : NATURAL) RETURN NATURAL IS
|
VARIABLE v_len : NATURAL := 0;
|
VARIABLE v_len : NATURAL := 0;
|
BEGIN
|
BEGIN
|
IF use_a = TRUE THEN v_len := v_len + a_w; END IF;
|
IF use_a = TRUE THEN v_len := v_len + a_w; END IF;
|
IF use_b = TRUE THEN v_len := v_len + b_w; END IF;
|
IF use_b = TRUE THEN v_len := v_len + b_w; END IF;
|
IF use_c = TRUE THEN v_len := v_len + c_w; END IF;
|
IF use_c = TRUE THEN v_len := v_len + c_w; END IF;
|
IF use_d = TRUE THEN v_len := v_len + d_w; END IF;
|
IF use_d = TRUE THEN v_len := v_len + d_w; END IF;
|
IF use_e = TRUE THEN v_len := v_len + e_w; END IF;
|
IF use_e = TRUE THEN v_len := v_len + e_w; END IF;
|
IF use_f = TRUE THEN v_len := v_len + f_w; END IF;
|
IF use_f = TRUE THEN v_len := v_len + f_w; END IF;
|
IF use_g = TRUE THEN v_len := v_len + g_w; END IF;
|
IF use_g = TRUE THEN v_len := v_len + g_w; END IF;
|
RETURN v_len;
|
RETURN v_len;
|
END func_slv_concat_w;
|
END func_slv_concat_w;
|
|
|
FUNCTION func_slv_concat_w(use_a, use_b, use_c, use_d, use_e, use_f : BOOLEAN; a_w, b_w, c_w, d_w, e_w, f_w : NATURAL) RETURN NATURAL IS
|
FUNCTION func_slv_concat_w(use_a, use_b, use_c, use_d, use_e, use_f : BOOLEAN; a_w, b_w, c_w, d_w, e_w, f_w : NATURAL) RETURN NATURAL IS
|
BEGIN
|
BEGIN
|
RETURN func_slv_concat_w(use_a, use_b, use_c, use_d, use_e, use_f, FALSE, a_w, b_w, c_w, d_w, e_w, f_w, 0);
|
RETURN func_slv_concat_w(use_a, use_b, use_c, use_d, use_e, use_f, FALSE, a_w, b_w, c_w, d_w, e_w, f_w, 0);
|
END func_slv_concat_w;
|
END func_slv_concat_w;
|
|
|
FUNCTION func_slv_concat_w(use_a, use_b, use_c, use_d, use_e : BOOLEAN; a_w, b_w, c_w, d_w, e_w : NATURAL) RETURN NATURAL IS
|
FUNCTION func_slv_concat_w(use_a, use_b, use_c, use_d, use_e : BOOLEAN; a_w, b_w, c_w, d_w, e_w : NATURAL) RETURN NATURAL IS
|
BEGIN
|
BEGIN
|
RETURN func_slv_concat_w(use_a, use_b, use_c, use_d, use_e, FALSE, FALSE, a_w, b_w, c_w, d_w, e_w, 0, 0);
|
RETURN func_slv_concat_w(use_a, use_b, use_c, use_d, use_e, FALSE, FALSE, a_w, b_w, c_w, d_w, e_w, 0, 0);
|
END func_slv_concat_w;
|
END func_slv_concat_w;
|
|
|
FUNCTION func_slv_concat_w(use_a, use_b, use_c, use_d : BOOLEAN; a_w, b_w, c_w, d_w : NATURAL) RETURN NATURAL IS
|
FUNCTION func_slv_concat_w(use_a, use_b, use_c, use_d : BOOLEAN; a_w, b_w, c_w, d_w : NATURAL) RETURN NATURAL IS
|
BEGIN
|
BEGIN
|
RETURN func_slv_concat_w(use_a, use_b, use_c, use_d, FALSE, FALSE, FALSE, a_w, b_w, c_w, d_w, 0, 0, 0);
|
RETURN func_slv_concat_w(use_a, use_b, use_c, use_d, FALSE, FALSE, FALSE, a_w, b_w, c_w, d_w, 0, 0, 0);
|
END func_slv_concat_w;
|
END func_slv_concat_w;
|
|
|
FUNCTION func_slv_concat_w(use_a, use_b, use_c : BOOLEAN; a_w, b_w, c_w : NATURAL) RETURN NATURAL IS
|
FUNCTION func_slv_concat_w(use_a, use_b, use_c : BOOLEAN; a_w, b_w, c_w : NATURAL) RETURN NATURAL IS
|
BEGIN
|
BEGIN
|
RETURN func_slv_concat_w(use_a, use_b, use_c, FALSE, FALSE, FALSE, FALSE, a_w, b_w, c_w, 0, 0, 0, 0);
|
RETURN func_slv_concat_w(use_a, use_b, use_c, FALSE, FALSE, FALSE, FALSE, a_w, b_w, c_w, 0, 0, 0, 0);
|
END func_slv_concat_w;
|
END func_slv_concat_w;
|
|
|
FUNCTION func_slv_concat_w(use_a, use_b : BOOLEAN; a_w, b_w : NATURAL) RETURN NATURAL IS
|
FUNCTION func_slv_concat_w(use_a, use_b : BOOLEAN; a_w, b_w : NATURAL) RETURN NATURAL IS
|
BEGIN
|
BEGIN
|
RETURN func_slv_concat_w(use_a, use_b, FALSE, FALSE, FALSE, FALSE, FALSE, a_w, b_w, 0, 0, 0, 0, 0);
|
RETURN func_slv_concat_w(use_a, use_b, FALSE, FALSE, FALSE, FALSE, FALSE, a_w, b_w, 0, 0, 0, 0, 0);
|
END func_slv_concat_w;
|
END func_slv_concat_w;
|
|
|
-- extract slv
|
-- extract slv
|
FUNCTION func_slv_extract(use_a, use_b, use_c, use_d, use_e, use_f, use_g : BOOLEAN; a_w, b_w, c_w, d_w, e_w, f_w, g_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION func_slv_extract(use_a, use_b, use_c, use_d, use_e, use_f, use_g : BOOLEAN; a_w, b_w, c_w, d_w, e_w, f_w, g_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
VARIABLE v_w : NATURAL := 0;
|
VARIABLE v_w : NATURAL := 0;
|
VARIABLE v_lo : NATURAL := 0;
|
VARIABLE v_lo : NATURAL := 0;
|
BEGIN
|
BEGIN
|
-- if the selected slv is not used in vec, then return dummy, else return the selected slv from vec
|
-- if the selected slv is not used in vec, then return dummy, else return the selected slv from vec
|
CASE sel IS
|
CASE sel IS
|
WHEN 0 =>
|
WHEN 0 =>
|
IF use_a = TRUE THEN v_w := a_w; ELSE RETURN c_slv0(a_w-1 DOWNTO 0); END IF;
|
IF use_a = TRUE THEN v_w := a_w; ELSE RETURN c_slv0(a_w-1 DOWNTO 0); END IF;
|
WHEN 1 =>
|
WHEN 1 =>
|
IF use_b = TRUE THEN v_w := b_w; ELSE RETURN c_slv0(b_w-1 DOWNTO 0); END IF;
|
IF use_b = TRUE THEN v_w := b_w; ELSE RETURN c_slv0(b_w-1 DOWNTO 0); END IF;
|
IF use_a = TRUE THEN v_lo := v_lo + a_w; END IF;
|
IF use_a = TRUE THEN v_lo := v_lo + a_w; END IF;
|
WHEN 2 =>
|
WHEN 2 =>
|
IF use_c = TRUE THEN v_w := c_w; ELSE RETURN c_slv0(c_w-1 DOWNTO 0); END IF;
|
IF use_c = TRUE THEN v_w := c_w; ELSE RETURN c_slv0(c_w-1 DOWNTO 0); END IF;
|
IF use_a = TRUE THEN v_lo := v_lo + a_w; END IF;
|
IF use_a = TRUE THEN v_lo := v_lo + a_w; END IF;
|
IF use_b = TRUE THEN v_lo := v_lo + b_w; END IF;
|
IF use_b = TRUE THEN v_lo := v_lo + b_w; END IF;
|
WHEN 3 =>
|
WHEN 3 =>
|
IF use_d = TRUE THEN v_w := d_w; ELSE RETURN c_slv0(d_w-1 DOWNTO 0); END IF;
|
IF use_d = TRUE THEN v_w := d_w; ELSE RETURN c_slv0(d_w-1 DOWNTO 0); END IF;
|
IF use_a = TRUE THEN v_lo := v_lo + a_w; END IF;
|
IF use_a = TRUE THEN v_lo := v_lo + a_w; END IF;
|
IF use_b = TRUE THEN v_lo := v_lo + b_w; END IF;
|
IF use_b = TRUE THEN v_lo := v_lo + b_w; END IF;
|
IF use_c = TRUE THEN v_lo := v_lo + c_w; END IF;
|
IF use_c = TRUE THEN v_lo := v_lo + c_w; END IF;
|
WHEN 4 =>
|
WHEN 4 =>
|
IF use_e = TRUE THEN v_w := e_w; ELSE RETURN c_slv0(e_w-1 DOWNTO 0); END IF;
|
IF use_e = TRUE THEN v_w := e_w; ELSE RETURN c_slv0(e_w-1 DOWNTO 0); END IF;
|
IF use_a = TRUE THEN v_lo := v_lo + a_w; END IF;
|
IF use_a = TRUE THEN v_lo := v_lo + a_w; END IF;
|
IF use_b = TRUE THEN v_lo := v_lo + b_w; END IF;
|
IF use_b = TRUE THEN v_lo := v_lo + b_w; END IF;
|
IF use_c = TRUE THEN v_lo := v_lo + c_w; END IF;
|
IF use_c = TRUE THEN v_lo := v_lo + c_w; END IF;
|
IF use_d = TRUE THEN v_lo := v_lo + d_w; END IF;
|
IF use_d = TRUE THEN v_lo := v_lo + d_w; END IF;
|
WHEN 5 =>
|
WHEN 5 =>
|
IF use_f = TRUE THEN v_w := f_w; ELSE RETURN c_slv0(f_w-1 DOWNTO 0); END IF;
|
IF use_f = TRUE THEN v_w := f_w; ELSE RETURN c_slv0(f_w-1 DOWNTO 0); END IF;
|
IF use_a = TRUE THEN v_lo := v_lo + a_w; END IF;
|
IF use_a = TRUE THEN v_lo := v_lo + a_w; END IF;
|
IF use_b = TRUE THEN v_lo := v_lo + b_w; END IF;
|
IF use_b = TRUE THEN v_lo := v_lo + b_w; END IF;
|
IF use_c = TRUE THEN v_lo := v_lo + c_w; END IF;
|
IF use_c = TRUE THEN v_lo := v_lo + c_w; END IF;
|
IF use_d = TRUE THEN v_lo := v_lo + d_w; END IF;
|
IF use_d = TRUE THEN v_lo := v_lo + d_w; END IF;
|
IF use_e = TRUE THEN v_lo := v_lo + e_w; END IF;
|
IF use_e = TRUE THEN v_lo := v_lo + e_w; END IF;
|
WHEN 6 =>
|
WHEN 6 =>
|
IF use_g = TRUE THEN v_w := g_w; ELSE RETURN c_slv0(g_w-1 DOWNTO 0); END IF;
|
IF use_g = TRUE THEN v_w := g_w; ELSE RETURN c_slv0(g_w-1 DOWNTO 0); END IF;
|
IF use_a = TRUE THEN v_lo := v_lo + a_w; END IF;
|
IF use_a = TRUE THEN v_lo := v_lo + a_w; END IF;
|
IF use_b = TRUE THEN v_lo := v_lo + b_w; END IF;
|
IF use_b = TRUE THEN v_lo := v_lo + b_w; END IF;
|
IF use_c = TRUE THEN v_lo := v_lo + c_w; END IF;
|
IF use_c = TRUE THEN v_lo := v_lo + c_w; END IF;
|
IF use_d = TRUE THEN v_lo := v_lo + d_w; END IF;
|
IF use_d = TRUE THEN v_lo := v_lo + d_w; END IF;
|
IF use_e = TRUE THEN v_lo := v_lo + e_w; END IF;
|
IF use_e = TRUE THEN v_lo := v_lo + e_w; END IF;
|
IF use_f = TRUE THEN v_lo := v_lo + f_w; END IF;
|
IF use_f = TRUE THEN v_lo := v_lo + f_w; END IF;
|
WHEN OTHERS => REPORT "Unknown common_pkg func_slv_extract argument" SEVERITY FAILURE;
|
WHEN OTHERS => REPORT "Unknown common_pkg func_slv_extract argument" SEVERITY FAILURE;
|
END CASE;
|
END CASE;
|
RETURN vec(v_w-1 + v_lo DOWNTO v_lo); -- extracted slv
|
RETURN vec(v_w-1 + v_lo DOWNTO v_lo); -- extracted slv
|
END func_slv_extract;
|
END func_slv_extract;
|
|
|
FUNCTION func_slv_extract(use_a, use_b, use_c, use_d, use_e, use_f : BOOLEAN; a_w, b_w, c_w, d_w, e_w, f_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION func_slv_extract(use_a, use_b, use_c, use_d, use_e, use_f : BOOLEAN; a_w, b_w, c_w, d_w, e_w, f_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN func_slv_extract(use_a, use_b, use_c, use_d, use_e, use_f, FALSE, a_w, b_w, c_w, d_w, e_w, f_w, 0, vec, sel);
|
RETURN func_slv_extract(use_a, use_b, use_c, use_d, use_e, use_f, FALSE, a_w, b_w, c_w, d_w, e_w, f_w, 0, vec, sel);
|
END func_slv_extract;
|
END func_slv_extract;
|
|
|
FUNCTION func_slv_extract(use_a, use_b, use_c, use_d, use_e : BOOLEAN; a_w, b_w, c_w, d_w, e_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION func_slv_extract(use_a, use_b, use_c, use_d, use_e : BOOLEAN; a_w, b_w, c_w, d_w, e_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN func_slv_extract(use_a, use_b, use_c, use_d, use_e, FALSE, FALSE, a_w, b_w, c_w, d_w, e_w, 0, 0, vec, sel);
|
RETURN func_slv_extract(use_a, use_b, use_c, use_d, use_e, FALSE, FALSE, a_w, b_w, c_w, d_w, e_w, 0, 0, vec, sel);
|
END func_slv_extract;
|
END func_slv_extract;
|
|
|
FUNCTION func_slv_extract(use_a, use_b, use_c, use_d : BOOLEAN; a_w, b_w, c_w, d_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION func_slv_extract(use_a, use_b, use_c, use_d : BOOLEAN; a_w, b_w, c_w, d_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN func_slv_extract(use_a, use_b, use_c, use_d, FALSE, FALSE, FALSE, a_w, b_w, c_w, d_w, 0, 0, 0, vec, sel);
|
RETURN func_slv_extract(use_a, use_b, use_c, use_d, FALSE, FALSE, FALSE, a_w, b_w, c_w, d_w, 0, 0, 0, vec, sel);
|
END func_slv_extract;
|
END func_slv_extract;
|
|
|
FUNCTION func_slv_extract(use_a, use_b, use_c : BOOLEAN; a_w, b_w, c_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION func_slv_extract(use_a, use_b, use_c : BOOLEAN; a_w, b_w, c_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN func_slv_extract(use_a, use_b, use_c, FALSE, FALSE, FALSE, FALSE, a_w, b_w, c_w, 0, 0, 0, 0, vec, sel);
|
RETURN func_slv_extract(use_a, use_b, use_c, FALSE, FALSE, FALSE, FALSE, a_w, b_w, c_w, 0, 0, 0, 0, vec, sel);
|
END func_slv_extract;
|
END func_slv_extract;
|
|
|
FUNCTION func_slv_extract(use_a, use_b : BOOLEAN; a_w, b_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION func_slv_extract(use_a, use_b : BOOLEAN; a_w, b_w : NATURAL; vec : STD_LOGIC_VECTOR; sel : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN func_slv_extract(use_a, use_b, FALSE, FALSE, FALSE, FALSE, FALSE, a_w, b_w, 0, 0, 0, 0, 0, vec, sel);
|
RETURN func_slv_extract(use_a, use_b, FALSE, FALSE, FALSE, FALSE, FALSE, a_w, b_w, 0, 0, 0, 0, 0, vec, sel);
|
END func_slv_extract;
|
END func_slv_extract;
|
|
|
|
|
FUNCTION TO_UINT(vec : STD_LOGIC_VECTOR) RETURN NATURAL IS
|
FUNCTION TO_UINT(vec : STD_LOGIC_VECTOR) RETURN NATURAL IS
|
BEGIN
|
BEGIN
|
RETURN TO_INTEGER(UNSIGNED(vec));
|
RETURN TO_INTEGER(UNSIGNED(vec));
|
END;
|
END;
|
|
|
FUNCTION TO_SINT(vec : STD_LOGIC_VECTOR) RETURN INTEGER IS
|
FUNCTION TO_SINT(vec : STD_LOGIC_VECTOR) RETURN INTEGER IS
|
BEGIN
|
BEGIN
|
RETURN TO_INTEGER(SIGNED(vec));
|
RETURN TO_INTEGER(SIGNED(vec));
|
END;
|
END;
|
|
|
FUNCTION TO_UVEC(dec, w : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION TO_UVEC(dec, w : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN STD_LOGIC_VECTOR(TO_UNSIGNED(dec, w));
|
RETURN STD_LOGIC_VECTOR(TO_UNSIGNED(dec, w));
|
END;
|
END;
|
|
|
FUNCTION TO_SVEC(dec, w : INTEGER) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION TO_SVEC(dec, w : INTEGER) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN STD_LOGIC_VECTOR(TO_SIGNED(dec, w));
|
RETURN STD_LOGIC_VECTOR(TO_SIGNED(dec, w));
|
END;
|
END;
|
|
|
FUNCTION TO_SVEC_32(dec : INTEGER) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION TO_SVEC_32(dec : INTEGER) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN TO_SVEC(dec, 32);
|
RETURN TO_SVEC(dec, 32);
|
END;
|
END;
|
|
|
FUNCTION RESIZE_NUM(u : UNSIGNED; w : NATURAL) RETURN UNSIGNED IS
|
FUNCTION RESIZE_NUM(u : UNSIGNED; w : NATURAL) RETURN UNSIGNED IS
|
BEGIN
|
BEGIN
|
-- left extend with '0' or keep LS part (same as RESIZE for UNSIGNED)
|
-- left extend with '0' or keep LS part (same as RESIZE for UNSIGNED)
|
RETURN RESIZE(u, w);
|
RETURN RESIZE(u, w);
|
END;
|
END;
|
|
|
FUNCTION RESIZE_NUM(s : SIGNED; w : NATURAL) RETURN SIGNED IS
|
FUNCTION RESIZE_NUM(s : SIGNED; w : NATURAL) RETURN SIGNED IS
|
BEGIN
|
BEGIN
|
-- extend sign bit or keep LS part
|
-- extend sign bit or keep LS part
|
IF w>s'LENGTH THEN
|
IF w>s'LENGTH THEN
|
RETURN RESIZE(s, w); -- extend sign bit
|
RETURN RESIZE(s, w); -- extend sign bit
|
ELSE
|
ELSE
|
RETURN SIGNED(RESIZE(UNSIGNED(s), w)); -- keep LSbits (= vec[w-1:0])
|
RETURN SIGNED(RESIZE(UNSIGNED(s), w)); -- keep LSbits (= vec[w-1:0])
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION RESIZE_UVEC(sl : STD_LOGIC; w : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION RESIZE_UVEC(sl : STD_LOGIC; w : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
VARIABLE v_slv0 : STD_LOGIC_VECTOR(w-1 DOWNTO 1) := (OTHERS=>'0');
|
VARIABLE v_slv0 : STD_LOGIC_VECTOR(w-1 DOWNTO 1) := (OTHERS=>'0');
|
BEGIN
|
BEGIN
|
RETURN v_slv0 & sl;
|
RETURN v_slv0 & sl;
|
END;
|
END;
|
|
|
FUNCTION RESIZE_UVEC(vec : STD_LOGIC_VECTOR; w : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION RESIZE_UVEC(vec : STD_LOGIC_VECTOR; w : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN STD_LOGIC_VECTOR(RESIZE_NUM(UNSIGNED(vec), w));
|
RETURN STD_LOGIC_VECTOR(RESIZE_NUM(UNSIGNED(vec), w));
|
END;
|
END;
|
|
|
FUNCTION RESIZE_SVEC(vec : STD_LOGIC_VECTOR; w : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION RESIZE_SVEC(vec : STD_LOGIC_VECTOR; w : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN STD_LOGIC_VECTOR(RESIZE_NUM(SIGNED(vec), w));
|
RETURN STD_LOGIC_VECTOR(RESIZE_NUM(SIGNED(vec), w));
|
END;
|
END;
|
|
|
FUNCTION RESIZE_UINT(u : INTEGER; w : NATURAL) RETURN INTEGER IS
|
FUNCTION RESIZE_UINT(u : INTEGER; w : NATURAL) RETURN INTEGER IS
|
VARIABLE v : STD_LOGIC_VECTOR(c_word_w-1 DOWNTO 0);
|
VARIABLE v : STD_LOGIC_VECTOR(c_word_w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
v := TO_UVEC(u, c_word_w);
|
v := TO_UVEC(u, c_word_w);
|
RETURN TO_UINT(v(w-1 DOWNTO 0));
|
RETURN TO_UINT(v(w-1 DOWNTO 0));
|
END;
|
END;
|
|
|
FUNCTION RESIZE_SINT(s : INTEGER; w : NATURAL) RETURN INTEGER IS
|
FUNCTION RESIZE_SINT(s : INTEGER; w : NATURAL) RETURN INTEGER IS
|
VARIABLE v : STD_LOGIC_VECTOR(c_word_w-1 DOWNTO 0);
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VARIABLE v : STD_LOGIC_VECTOR(c_word_w-1 DOWNTO 0);
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BEGIN
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BEGIN
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v := TO_SVEC(s, c_word_w);
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v := TO_SVEC(s, c_word_w);
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RETURN TO_SINT(v(w-1 DOWNTO 0));
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RETURN TO_SINT(v(w-1 DOWNTO 0));
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END;
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END;
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FUNCTION RESIZE_UVEC_32(vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
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FUNCTION RESIZE_UVEC_32(vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
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BEGIN
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BEGIN
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RETURN RESIZE_UVEC(vec, 32);
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RETURN RESIZE_UVEC(vec, 32);
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END;
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END;
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FUNCTION RESIZE_SVEC_32(vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
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FUNCTION RESIZE_SVEC_32(vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
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BEGIN
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BEGIN
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RETURN RESIZE_SVEC(vec, 32);
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RETURN RESIZE_SVEC(vec, 32);
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END;
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END;
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FUNCTION INCR_UVEC(vec : STD_LOGIC_VECTOR; dec : INTEGER) RETURN STD_LOGIC_VECTOR IS
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FUNCTION INCR_UVEC(vec : STD_LOGIC_VECTOR; dec : INTEGER) RETURN STD_LOGIC_VECTOR IS
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VARIABLE v_dec : INTEGER;
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VARIABLE v_dec : INTEGER;
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BEGIN
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BEGIN
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IF dec < 0 THEN
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IF dec < 0 THEN
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v_dec := -dec;
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v_dec := -dec;
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RETURN STD_LOGIC_VECTOR(UNSIGNED(vec) - v_dec); -- uses function "-" (L : UNSIGNED, R : NATURAL), there is no function + with R : INTEGER argument
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RETURN STD_LOGIC_VECTOR(UNSIGNED(vec) - v_dec); -- uses function "-" (L : UNSIGNED, R : NATURAL), there is no function + with R : INTEGER argument
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ELSE
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ELSE
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v_dec := dec;
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v_dec := dec;
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RETURN STD_LOGIC_VECTOR(UNSIGNED(vec) + v_dec); -- uses function "+" (L : UNSIGNED, R : NATURAL)
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RETURN STD_LOGIC_VECTOR(UNSIGNED(vec) + v_dec); -- uses function "+" (L : UNSIGNED, R : NATURAL)
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END IF;
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END IF;
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END;
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END;
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FUNCTION INCR_UVEC(vec : STD_LOGIC_VECTOR; dec : UNSIGNED) RETURN STD_LOGIC_VECTOR IS
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FUNCTION INCR_UVEC(vec : STD_LOGIC_VECTOR; dec : UNSIGNED) RETURN STD_LOGIC_VECTOR IS
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BEGIN
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BEGIN
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RETURN STD_LOGIC_VECTOR(UNSIGNED(vec) + dec);
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RETURN STD_LOGIC_VECTOR(UNSIGNED(vec) + dec);
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END;
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END;
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FUNCTION INCR_SVEC(vec : STD_LOGIC_VECTOR; dec : INTEGER) RETURN STD_LOGIC_VECTOR IS
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FUNCTION INCR_SVEC(vec : STD_LOGIC_VECTOR; dec : INTEGER) RETURN STD_LOGIC_VECTOR IS
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VARIABLE v_dec : INTEGER;
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VARIABLE v_dec : INTEGER;
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BEGIN
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BEGIN
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RETURN STD_LOGIC_VECTOR(SIGNED(vec) + v_dec); -- uses function "+" (L : SIGNED, R : INTEGER)
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RETURN STD_LOGIC_VECTOR(SIGNED(vec) + v_dec); -- uses function "+" (L : SIGNED, R : INTEGER)
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END;
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END;
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FUNCTION INCR_SVEC(vec : STD_LOGIC_VECTOR; dec : SIGNED) RETURN STD_LOGIC_VECTOR IS
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FUNCTION INCR_SVEC(vec : STD_LOGIC_VECTOR; dec : SIGNED) RETURN STD_LOGIC_VECTOR IS
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BEGIN
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BEGIN
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RETURN STD_LOGIC_VECTOR(SIGNED(vec) + dec);
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RETURN STD_LOGIC_VECTOR(SIGNED(vec) + dec);
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END;
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END;
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FUNCTION ADD_SVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR; res_w : NATURAL) RETURN STD_LOGIC_VECTOR IS
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FUNCTION ADD_SVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR; res_w : NATURAL) RETURN STD_LOGIC_VECTOR IS
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BEGIN
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BEGIN
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RETURN STD_LOGIC_VECTOR(RESIZE_NUM(SIGNED(l_vec), res_w) + SIGNED(r_vec));
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RETURN STD_LOGIC_VECTOR(RESIZE_NUM(SIGNED(l_vec), res_w) + SIGNED(r_vec));
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END;
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END;
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FUNCTION SUB_SVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR; res_w : NATURAL) RETURN STD_LOGIC_VECTOR IS
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FUNCTION SUB_SVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR; res_w : NATURAL) RETURN STD_LOGIC_VECTOR IS
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BEGIN
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BEGIN
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RETURN STD_LOGIC_VECTOR(RESIZE_NUM(SIGNED(l_vec), res_w) - SIGNED(r_vec));
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RETURN STD_LOGIC_VECTOR(RESIZE_NUM(SIGNED(l_vec), res_w) - SIGNED(r_vec));
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END;
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END;
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FUNCTION ADD_UVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR; res_w : NATURAL) RETURN STD_LOGIC_VECTOR IS
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FUNCTION ADD_UVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR; res_w : NATURAL) RETURN STD_LOGIC_VECTOR IS
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BEGIN
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BEGIN
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RETURN STD_LOGIC_VECTOR(RESIZE_NUM(UNSIGNED(l_vec), res_w) + UNSIGNED(r_vec));
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RETURN STD_LOGIC_VECTOR(RESIZE_NUM(UNSIGNED(l_vec), res_w) + UNSIGNED(r_vec));
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END;
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END;
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FUNCTION SUB_UVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR; res_w : NATURAL) RETURN STD_LOGIC_VECTOR IS
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FUNCTION SUB_UVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR; res_w : NATURAL) RETURN STD_LOGIC_VECTOR IS
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BEGIN
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BEGIN
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RETURN STD_LOGIC_VECTOR(RESIZE_NUM(UNSIGNED(l_vec), res_w) - UNSIGNED(r_vec));
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RETURN STD_LOGIC_VECTOR(RESIZE_NUM(UNSIGNED(l_vec), res_w) - UNSIGNED(r_vec));
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END;
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END;
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FUNCTION ADD_SVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
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FUNCTION ADD_SVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
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BEGIN
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BEGIN
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RETURN ADD_SVEC(l_vec, r_vec, l_vec'LENGTH);
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RETURN ADD_SVEC(l_vec, r_vec, l_vec'LENGTH);
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END;
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END;
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FUNCTION SUB_SVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
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FUNCTION SUB_SVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
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BEGIN
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BEGIN
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RETURN SUB_SVEC(l_vec, r_vec, l_vec'LENGTH);
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RETURN SUB_SVEC(l_vec, r_vec, l_vec'LENGTH);
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END;
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END;
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FUNCTION ADD_UVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
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FUNCTION ADD_UVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
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BEGIN
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BEGIN
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RETURN ADD_UVEC(l_vec, r_vec, l_vec'LENGTH);
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RETURN ADD_UVEC(l_vec, r_vec, l_vec'LENGTH);
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END;
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END;
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FUNCTION SUB_UVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
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FUNCTION SUB_UVEC(l_vec : STD_LOGIC_VECTOR; r_vec : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
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BEGIN
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BEGIN
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RETURN SUB_UVEC(l_vec, r_vec, l_vec'LENGTH);
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RETURN SUB_UVEC(l_vec, r_vec, l_vec'LENGTH);
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END;
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END;
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FUNCTION COMPLEX_MULT_REAL(a_re, a_im, b_re, b_im : INTEGER) RETURN INTEGER IS
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FUNCTION COMPLEX_MULT_REAL(a_re, a_im, b_re, b_im : INTEGER) RETURN INTEGER IS
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BEGIN
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BEGIN
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RETURN (a_re*b_re - a_im*b_im);
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RETURN (a_re*b_re - a_im*b_im);
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END;
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END;
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FUNCTION COMPLEX_MULT_IMAG(a_re, a_im, b_re, b_im : INTEGER) RETURN INTEGER IS
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FUNCTION COMPLEX_MULT_IMAG(a_re, a_im, b_re, b_im : INTEGER) RETURN INTEGER IS
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BEGIN
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BEGIN
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RETURN (a_im*b_re + a_re*b_im);
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RETURN (a_im*b_re + a_re*b_im);
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END;
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END;
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FUNCTION SHIFT_UVEC(vec : STD_LOGIC_VECTOR; shift : INTEGER) RETURN STD_LOGIC_VECTOR IS
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FUNCTION SHIFT_UVEC(vec : STD_LOGIC_VECTOR; shift : INTEGER) RETURN STD_LOGIC_VECTOR IS
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BEGIN
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BEGIN
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IF shift < 0 THEN
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IF shift < 0 THEN
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RETURN STD_LOGIC_VECTOR(SHIFT_LEFT(UNSIGNED(vec), -shift)); -- fill zeros from right
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RETURN STD_LOGIC_VECTOR(SHIFT_LEFT(UNSIGNED(vec), -shift)); -- fill zeros from right
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ELSE
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ELSE
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RETURN STD_LOGIC_VECTOR(SHIFT_RIGHT(UNSIGNED(vec), shift)); -- fill zeros from left
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RETURN STD_LOGIC_VECTOR(SHIFT_RIGHT(UNSIGNED(vec), shift)); -- fill zeros from left
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END IF;
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END IF;
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END;
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END;
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FUNCTION SHIFT_SVEC(vec : STD_LOGIC_VECTOR; shift : INTEGER) RETURN STD_LOGIC_VECTOR IS
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FUNCTION SHIFT_SVEC(vec : STD_LOGIC_VECTOR; shift : INTEGER) RETURN STD_LOGIC_VECTOR IS
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BEGIN
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BEGIN
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IF shift < 0 THEN
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IF shift < 0 THEN
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RETURN STD_LOGIC_VECTOR(SHIFT_LEFT(SIGNED(vec), -shift)); -- same as SHIFT_LEFT for UNSIGNED
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RETURN STD_LOGIC_VECTOR(SHIFT_LEFT(SIGNED(vec), -shift)); -- same as SHIFT_LEFT for UNSIGNED
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ELSE
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ELSE
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RETURN STD_LOGIC_VECTOR(SHIFT_RIGHT(SIGNED(vec), shift)); -- extend sign
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RETURN STD_LOGIC_VECTOR(SHIFT_RIGHT(SIGNED(vec), shift)); -- extend sign
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END IF;
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END IF;
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END;
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END;
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--
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--
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-- offset_binary() : maps offset binary to or from two-complement binary.
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-- offset_binary() : maps offset binary to or from two-complement binary.
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--
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--
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-- National ADC08DC1020 offset binary two-complement binary
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-- National ADC08DC1020 offset binary two-complement binary
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-- + full scale = 127.5 : 11111111 = 255 127 = 01111111
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-- + full scale = 127.5 : 11111111 = 255 127 = 01111111
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-- ...
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-- ...
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-- + = +0.5 : 10000000 = 128 0 = 00000000
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-- + = +0.5 : 10000000 = 128 0 = 00000000
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-- 0
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-- 0
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-- - = -0.5 : 01111111 = 127 -1 = 11111111
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-- - = -0.5 : 01111111 = 127 -1 = 11111111
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-- ...
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-- ...
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-- - full scale = -127.5 : 00000000 = 0 -128 = 10000000
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-- - full scale = -127.5 : 00000000 = 0 -128 = 10000000
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--
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--
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-- To map between the offset binary and two complement binary involves
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-- To map between the offset binary and two complement binary involves
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-- adding 128 to the binary value or equivalently inverting the sign bit.
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-- adding 128 to the binary value or equivalently inverting the sign bit.
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-- The offset_binary() mapping can be done and undone both ways.
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-- The offset_binary() mapping can be done and undone both ways.
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-- The offset_binary() mapping to two-complement binary yields a DC offset
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-- The offset_binary() mapping to two-complement binary yields a DC offset
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-- of -0.5 Lsb.
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-- of -0.5 Lsb.
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FUNCTION offset_binary(a : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
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FUNCTION offset_binary(a : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
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VARIABLE v_res : STD_LOGIC_VECTOR(a'LENGTH-1 DOWNTO 0) := a;
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VARIABLE v_res : STD_LOGIC_VECTOR(a'LENGTH-1 DOWNTO 0) := a;
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BEGIN
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BEGIN
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v_res(v_res'HIGH) := NOT v_res(v_res'HIGH); -- invert MSbit to get to from offset binary to two's complement, or vice versa
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v_res(v_res'HIGH) := NOT v_res(v_res'HIGH); -- invert MSbit to get to from offset binary to two's complement, or vice versa
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RETURN v_res;
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RETURN v_res;
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END;
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END;
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FUNCTION truncate(vec : STD_LOGIC_VECTOR; n : NATURAL) RETURN STD_LOGIC_VECTOR IS
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FUNCTION truncate(vec : STD_LOGIC_VECTOR; n : NATURAL) RETURN STD_LOGIC_VECTOR IS
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CONSTANT c_vec_w : NATURAL := vec'LENGTH;
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CONSTANT c_vec_w : NATURAL := vec'LENGTH;
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CONSTANT c_trunc_w : NATURAL := c_vec_w-n;
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CONSTANT c_trunc_w : NATURAL := c_vec_w-n;
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VARIABLE v_vec : STD_LOGIC_VECTOR(c_vec_w-1 DOWNTO 0) := vec;
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VARIABLE v_vec : STD_LOGIC_VECTOR(c_vec_w-1 DOWNTO 0) := vec;
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VARIABLE v_res : STD_LOGIC_VECTOR(c_trunc_w-1 DOWNTO 0);
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VARIABLE v_res : STD_LOGIC_VECTOR(c_trunc_w-1 DOWNTO 0);
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BEGIN
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BEGIN
|
v_res := v_vec(c_vec_w-1 DOWNTO n); -- keep MS part
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v_res := v_vec(c_vec_w-1 DOWNTO n); -- keep MS part
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RETURN v_res;
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RETURN v_res;
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END;
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END;
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FUNCTION truncate_and_resize_uvec(vec : STD_LOGIC_VECTOR; n, w : NATURAL) RETURN STD_LOGIC_VECTOR IS
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FUNCTION truncate_and_resize_uvec(vec : STD_LOGIC_VECTOR; n, w : NATURAL) RETURN STD_LOGIC_VECTOR IS
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CONSTANT c_vec_w : NATURAL := vec'LENGTH;
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CONSTANT c_vec_w : NATURAL := vec'LENGTH;
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CONSTANT c_trunc_w : NATURAL := c_vec_w-n;
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CONSTANT c_trunc_w : NATURAL := c_vec_w-n;
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VARIABLE v_trunc : STD_LOGIC_VECTOR(c_trunc_w-1 DOWNTO 0);
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VARIABLE v_trunc : STD_LOGIC_VECTOR(c_trunc_w-1 DOWNTO 0);
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VARIABLE v_res : STD_LOGIC_VECTOR(w-1 DOWNTO 0);
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VARIABLE v_res : STD_LOGIC_VECTOR(w-1 DOWNTO 0);
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BEGIN
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BEGIN
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v_trunc := truncate(vec, n); -- first keep MS part
|
v_trunc := truncate(vec, n); -- first keep MS part
|
v_res := RESIZE_UVEC(v_trunc, w); -- then keep LS part or left extend with '0'
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v_res := RESIZE_UVEC(v_trunc, w); -- then keep LS part or left extend with '0'
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RETURN v_res;
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RETURN v_res;
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END;
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END;
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FUNCTION truncate_and_resize_svec(vec : STD_LOGIC_VECTOR; n, w : NATURAL) RETURN STD_LOGIC_VECTOR IS
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FUNCTION truncate_and_resize_svec(vec : STD_LOGIC_VECTOR; n, w : NATURAL) RETURN STD_LOGIC_VECTOR IS
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CONSTANT c_vec_w : NATURAL := vec'LENGTH;
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CONSTANT c_vec_w : NATURAL := vec'LENGTH;
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CONSTANT c_trunc_w : NATURAL := c_vec_w-n;
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CONSTANT c_trunc_w : NATURAL := c_vec_w-n;
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VARIABLE v_trunc : STD_LOGIC_VECTOR(c_trunc_w-1 DOWNTO 0);
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VARIABLE v_trunc : STD_LOGIC_VECTOR(c_trunc_w-1 DOWNTO 0);
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VARIABLE v_res : STD_LOGIC_VECTOR(w-1 DOWNTO 0);
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VARIABLE v_res : STD_LOGIC_VECTOR(w-1 DOWNTO 0);
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BEGIN
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BEGIN
|
v_trunc := truncate(vec, n); -- first keep MS part
|
v_trunc := truncate(vec, n); -- first keep MS part
|
v_res := RESIZE_SVEC(v_trunc, w); -- then keep sign bit and LS part or left extend sign bit
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v_res := RESIZE_SVEC(v_trunc, w); -- then keep sign bit and LS part or left extend sign bit
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RETURN v_res;
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RETURN v_res;
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END;
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END;
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FUNCTION scale(vec : STD_LOGIC_VECTOR; n: NATURAL) RETURN STD_LOGIC_VECTOR IS
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FUNCTION scale(vec : STD_LOGIC_VECTOR; n: NATURAL) RETURN STD_LOGIC_VECTOR IS
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CONSTANT c_vec_w : NATURAL := vec'LENGTH;
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CONSTANT c_vec_w : NATURAL := vec'LENGTH;
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CONSTANT c_scale_w : NATURAL := c_vec_w+n;
|
CONSTANT c_scale_w : NATURAL := c_vec_w+n;
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VARIABLE v_res : STD_LOGIC_VECTOR(c_scale_w-1 DOWNTO 0) := (OTHERS=>'0');
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VARIABLE v_res : STD_LOGIC_VECTOR(c_scale_w-1 DOWNTO 0) := (OTHERS=>'0');
|
BEGIN
|
BEGIN
|
v_res(c_scale_w-1 DOWNTO n) := vec; -- scale by adding n zero bits at the right
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v_res(c_scale_w-1 DOWNTO n) := vec; -- scale by adding n zero bits at the right
|
RETURN v_res;
|
RETURN v_res;
|
END;
|
END;
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|
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FUNCTION scale_and_resize_uvec(vec : STD_LOGIC_VECTOR; n, w : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION scale_and_resize_uvec(vec : STD_LOGIC_VECTOR; n, w : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
CONSTANT c_vec_w : NATURAL := vec'LENGTH;
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CONSTANT c_vec_w : NATURAL := vec'LENGTH;
|
CONSTANT c_scale_w : NATURAL := c_vec_w+n;
|
CONSTANT c_scale_w : NATURAL := c_vec_w+n;
|
VARIABLE v_scale : STD_LOGIC_VECTOR(c_scale_w-1 DOWNTO 0) := (OTHERS=>'0');
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VARIABLE v_scale : STD_LOGIC_VECTOR(c_scale_w-1 DOWNTO 0) := (OTHERS=>'0');
|
VARIABLE v_res : STD_LOGIC_VECTOR(w-1 DOWNTO 0);
|
VARIABLE v_res : STD_LOGIC_VECTOR(w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
v_scale(c_scale_w-1 DOWNTO n) := vec; -- first scale by adding n zero bits at the right
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v_scale(c_scale_w-1 DOWNTO n) := vec; -- first scale by adding n zero bits at the right
|
v_res := RESIZE_UVEC(v_scale, w); -- then keep LS part or left extend with '0'
|
v_res := RESIZE_UVEC(v_scale, w); -- then keep LS part or left extend with '0'
|
RETURN v_res;
|
RETURN v_res;
|
END;
|
END;
|
|
|
FUNCTION scale_and_resize_svec(vec : STD_LOGIC_VECTOR; n, w : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION scale_and_resize_svec(vec : STD_LOGIC_VECTOR; n, w : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
CONSTANT c_vec_w : NATURAL := vec'LENGTH;
|
CONSTANT c_vec_w : NATURAL := vec'LENGTH;
|
CONSTANT c_scale_w : NATURAL := c_vec_w+n;
|
CONSTANT c_scale_w : NATURAL := c_vec_w+n;
|
VARIABLE v_scale : STD_LOGIC_VECTOR(c_scale_w-1 DOWNTO 0) := (OTHERS=>'0');
|
VARIABLE v_scale : STD_LOGIC_VECTOR(c_scale_w-1 DOWNTO 0) := (OTHERS=>'0');
|
VARIABLE v_res : STD_LOGIC_VECTOR(w-1 DOWNTO 0);
|
VARIABLE v_res : STD_LOGIC_VECTOR(w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
v_scale(c_scale_w-1 DOWNTO n) := vec; -- first scale by adding n zero bits at the right
|
v_scale(c_scale_w-1 DOWNTO n) := vec; -- first scale by adding n zero bits at the right
|
v_res := RESIZE_SVEC(v_scale, w); -- then keep LS part or left extend sign bit
|
v_res := RESIZE_SVEC(v_scale, w); -- then keep LS part or left extend sign bit
|
RETURN v_res;
|
RETURN v_res;
|
END;
|
END;
|
|
|
FUNCTION truncate_or_resize_uvec(vec : STD_LOGIC_VECTOR; b : BOOLEAN; w : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION truncate_or_resize_uvec(vec : STD_LOGIC_VECTOR; b : BOOLEAN; w : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
CONSTANT c_vec_w : NATURAL := vec'LENGTH;
|
CONSTANT c_vec_w : NATURAL := vec'LENGTH;
|
VARIABLE c_n : INTEGER := c_vec_w-w;
|
VARIABLE c_n : INTEGER := c_vec_w-w;
|
VARIABLE v_res : STD_LOGIC_VECTOR(w-1 DOWNTO 0);
|
VARIABLE v_res : STD_LOGIC_VECTOR(w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
IF b=TRUE AND c_n>0 THEN
|
IF b=TRUE AND c_n>0 THEN
|
v_res := truncate_and_resize_uvec(vec, c_n, w);
|
v_res := truncate_and_resize_uvec(vec, c_n, w);
|
ELSE
|
ELSE
|
v_res := RESIZE_UVEC(vec, w);
|
v_res := RESIZE_UVEC(vec, w);
|
END IF;
|
END IF;
|
RETURN v_res;
|
RETURN v_res;
|
END;
|
END;
|
|
|
FUNCTION truncate_or_resize_svec(vec : STD_LOGIC_VECTOR; b : BOOLEAN; w : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION truncate_or_resize_svec(vec : STD_LOGIC_VECTOR; b : BOOLEAN; w : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
CONSTANT c_vec_w : NATURAL := vec'LENGTH;
|
CONSTANT c_vec_w : NATURAL := vec'LENGTH;
|
VARIABLE c_n : INTEGER := c_vec_w-w;
|
VARIABLE c_n : INTEGER := c_vec_w-w;
|
VARIABLE v_res : STD_LOGIC_VECTOR(w-1 DOWNTO 0);
|
VARIABLE v_res : STD_LOGIC_VECTOR(w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
IF b=TRUE AND c_n>0 THEN
|
IF b=TRUE AND c_n>0 THEN
|
v_res := truncate_and_resize_svec(vec, c_n, w);
|
v_res := truncate_and_resize_svec(vec, c_n, w);
|
ELSE
|
ELSE
|
v_res := RESIZE_SVEC(vec, w);
|
v_res := RESIZE_SVEC(vec, w);
|
END IF;
|
END IF;
|
RETURN v_res;
|
RETURN v_res;
|
END;
|
END;
|
|
|
|
|
-- Functions s_round, s_round_up and u_round:
|
-- Functions s_round, s_round_up and u_round:
|
--
|
--
|
-- . The returned output width is input width - n.
|
-- . The returned output width is input width - n.
|
-- . If n=0 then the return value is the same as the input value so only
|
-- . If n=0 then the return value is the same as the input value so only
|
-- wires (NOP, no operation).
|
-- wires (NOP, no operation).
|
-- . Both have the same implementation but different c_max and c_clip values.
|
-- . Both have the same implementation but different c_max and c_clip values.
|
-- . Round up for unsigned so +2.5 becomes 3
|
-- . Round up for unsigned so +2.5 becomes 3
|
-- . Round away from zero for signed so round up for positive and round down for negative, so +2.5 becomes 3 and -2.5 becomes -3.
|
-- . Round away from zero for signed so round up for positive and round down for negative, so +2.5 becomes 3 and -2.5 becomes -3.
|
-- . Round away from zero is also used by round() in Matlab, Python, TCL
|
-- . Round away from zero is also used by round() in Matlab, Python, TCL
|
-- . Rounding up implies adding 0.5 and then truncation, use clip = TRUE to
|
-- . Rounding up implies adding 0.5 and then truncation, use clip = TRUE to
|
-- clip the potential overflow due to adding 0.5 to +max.
|
-- clip the potential overflow due to adding 0.5 to +max.
|
-- . For negative values overflow due to rounding can not occur, because c_half-1 >= 0 for n>0
|
-- . For negative values overflow due to rounding can not occur, because c_half-1 >= 0 for n>0
|
-- . If the input comes from a product and is rounded to the input width then
|
-- . If the input comes from a product and is rounded to the input width then
|
-- clip can safely be FALSE, because e.g. for unsigned 4b*4b=8b->4b the
|
-- clip can safely be FALSE, because e.g. for unsigned 4b*4b=8b->4b the
|
-- maximum product is 15*15=225 <= 255-8, and for signed 4b*4b=8b->4b the
|
-- maximum product is 15*15=225 <= 255-8, and for signed 4b*4b=8b->4b the
|
-- maximum product is -8*-8=+64 <= 127-8, so wrapping due to rounding
|
-- maximum product is -8*-8=+64 <= 127-8, so wrapping due to rounding
|
-- overflow will never occur.
|
-- overflow will never occur.
|
|
|
FUNCTION s_round(vec : STD_LOGIC_VECTOR; n : NATURAL; clip : BOOLEAN) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION s_round(vec : STD_LOGIC_VECTOR; n : NATURAL; clip : BOOLEAN) RETURN STD_LOGIC_VECTOR IS
|
-- Use SIGNED to avoid NATURAL (32 bit range) overflow error
|
-- Use SIGNED to avoid NATURAL (32 bit range) overflow error
|
CONSTANT c_in_w : NATURAL := vec'LENGTH;
|
CONSTANT c_in_w : NATURAL := vec'LENGTH;
|
CONSTANT c_out_w : NATURAL := vec'LENGTH - n;
|
CONSTANT c_out_w : NATURAL := vec'LENGTH - n;
|
CONSTANT c_one : SIGNED(c_in_w-1 DOWNTO 0) := TO_SIGNED(1, c_in_w);
|
CONSTANT c_one : SIGNED(c_in_w-1 DOWNTO 0) := TO_SIGNED(1, c_in_w);
|
CONSTANT c_half : SIGNED(c_in_w-1 DOWNTO 0) := SHIFT_LEFT(c_one, n-1); -- = 2**(n-1)
|
CONSTANT c_half : SIGNED(c_in_w-1 DOWNTO 0) := SHIFT_LEFT(c_one, n-1); -- = 2**(n-1)
|
CONSTANT c_max : SIGNED(c_in_w-1 DOWNTO 0) := SIGNED('0' & c_slv1(c_in_w-2 DOWNTO 0)) - c_half; -- = 2**(c_in_w-1)-1 - c_half
|
CONSTANT c_max : SIGNED(c_in_w-1 DOWNTO 0) := SIGNED('0' & c_slv1(c_in_w-2 DOWNTO 0)) - c_half; -- = 2**(c_in_w-1)-1 - c_half
|
CONSTANT c_clip : SIGNED(c_out_w-1 DOWNTO 0) := SIGNED('0' & c_slv1(c_out_w-2 DOWNTO 0)); -- = 2**(c_out_w-1)-1
|
CONSTANT c_clip : SIGNED(c_out_w-1 DOWNTO 0) := SIGNED('0' & c_slv1(c_out_w-2 DOWNTO 0)); -- = 2**(c_out_w-1)-1
|
VARIABLE v_in : SIGNED(c_in_w-1 DOWNTO 0);
|
VARIABLE v_in : SIGNED(c_in_w-1 DOWNTO 0);
|
VARIABLE v_out : SIGNED(c_out_w-1 DOWNTO 0);
|
VARIABLE v_out : SIGNED(c_out_w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
v_in := SIGNED(vec);
|
v_in := SIGNED(vec);
|
IF n > 0 THEN
|
IF n > 0 THEN
|
IF clip = TRUE AND v_in > c_max THEN
|
IF clip = TRUE AND v_in > c_max THEN
|
v_out := c_clip; -- Round clip to maximum positive to avoid wrap to negative
|
v_out := c_clip; -- Round clip to maximum positive to avoid wrap to negative
|
ELSE
|
ELSE
|
IF vec(vec'HIGH)='0' THEN
|
IF vec(vec'HIGH)='0' THEN
|
v_out := RESIZE_NUM(SHIFT_RIGHT(v_in + c_half + 0, n), c_out_w); -- Round up for positive
|
v_out := RESIZE_NUM(SHIFT_RIGHT(v_in + c_half + 0, n), c_out_w); -- Round up for positive
|
ELSE
|
ELSE
|
v_out := RESIZE_NUM(SHIFT_RIGHT(v_in + c_half - 1, n), c_out_w); -- Round down for negative
|
v_out := RESIZE_NUM(SHIFT_RIGHT(v_in + c_half - 1, n), c_out_w); -- Round down for negative
|
END IF;
|
END IF;
|
END IF;
|
END IF;
|
ELSE
|
ELSE
|
v_out := RESIZE_NUM(v_in, c_out_w); -- NOP
|
v_out := RESIZE_NUM(v_in, c_out_w); -- NOP
|
END IF;
|
END IF;
|
RETURN STD_LOGIC_VECTOR(v_out);
|
RETURN STD_LOGIC_VECTOR(v_out);
|
END;
|
END;
|
|
|
FUNCTION s_round(vec : STD_LOGIC_VECTOR; n : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION s_round(vec : STD_LOGIC_VECTOR; n : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN s_round(vec, n, FALSE); -- no round clip
|
RETURN s_round(vec, n, FALSE); -- no round clip
|
END;
|
END;
|
|
|
-- An alternative is to always round up, also for negative numbers (i.e. s_round_up = u_round).
|
-- An alternative is to always round up, also for negative numbers (i.e. s_round_up = u_round).
|
FUNCTION s_round_up(vec : STD_LOGIC_VECTOR; n : NATURAL; clip : BOOLEAN) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION s_round_up(vec : STD_LOGIC_VECTOR; n : NATURAL; clip : BOOLEAN) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN u_round(vec, n, clip);
|
RETURN u_round(vec, n, clip);
|
END;
|
END;
|
|
|
FUNCTION s_round_up(vec : STD_LOGIC_VECTOR; n : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION s_round_up(vec : STD_LOGIC_VECTOR; n : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN u_round(vec, n, FALSE); -- no round clip
|
RETURN u_round(vec, n, FALSE); -- no round clip
|
END;
|
END;
|
|
|
-- Unsigned numbers are round up (almost same as s_round, but without the else on negative vec)
|
-- Unsigned numbers are round up (almost same as s_round, but without the else on negative vec)
|
FUNCTION u_round(vec : STD_LOGIC_VECTOR; n : NATURAL; clip : BOOLEAN ) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION u_round(vec : STD_LOGIC_VECTOR; n : NATURAL; clip : BOOLEAN ) RETURN STD_LOGIC_VECTOR IS
|
-- Use UNSIGNED to avoid NATURAL (32 bit range) overflow error
|
-- Use UNSIGNED to avoid NATURAL (32 bit range) overflow error
|
CONSTANT c_in_w : NATURAL := vec'LENGTH;
|
CONSTANT c_in_w : NATURAL := vec'LENGTH;
|
CONSTANT c_out_w : NATURAL := vec'LENGTH - n;
|
CONSTANT c_out_w : NATURAL := vec'LENGTH - n;
|
CONSTANT c_one : UNSIGNED(c_in_w-1 DOWNTO 0) := TO_UNSIGNED(1, c_in_w);
|
CONSTANT c_one : UNSIGNED(c_in_w-1 DOWNTO 0) := TO_UNSIGNED(1, c_in_w);
|
CONSTANT c_half : UNSIGNED(c_in_w-1 DOWNTO 0) := SHIFT_LEFT(c_one, n-1); -- = 2**(n-1)
|
CONSTANT c_half : UNSIGNED(c_in_w-1 DOWNTO 0) := SHIFT_LEFT(c_one, n-1); -- = 2**(n-1)
|
CONSTANT c_max : UNSIGNED(c_in_w-1 DOWNTO 0) := UNSIGNED(c_slv1(c_in_w-1 DOWNTO 0)) - c_half; -- = 2**c_in_w-1 - c_half
|
CONSTANT c_max : UNSIGNED(c_in_w-1 DOWNTO 0) := UNSIGNED(c_slv1(c_in_w-1 DOWNTO 0)) - c_half; -- = 2**c_in_w-1 - c_half
|
CONSTANT c_clip : UNSIGNED(c_out_w-1 DOWNTO 0) := UNSIGNED(c_slv1(c_out_w-1 DOWNTO 0)); -- = 2**c_out_w-1
|
CONSTANT c_clip : UNSIGNED(c_out_w-1 DOWNTO 0) := UNSIGNED(c_slv1(c_out_w-1 DOWNTO 0)); -- = 2**c_out_w-1
|
VARIABLE v_in : UNSIGNED(c_in_w-1 DOWNTO 0);
|
VARIABLE v_in : UNSIGNED(c_in_w-1 DOWNTO 0);
|
VARIABLE v_out : UNSIGNED(c_out_w-1 DOWNTO 0);
|
VARIABLE v_out : UNSIGNED(c_out_w-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
v_in := UNSIGNED(vec);
|
v_in := UNSIGNED(vec);
|
IF n > 0 THEN
|
IF n > 0 THEN
|
IF clip = TRUE AND v_in > c_max THEN
|
IF clip = TRUE AND v_in > c_max THEN
|
v_out := c_clip; -- Round clip to +max to avoid wrap to 0
|
v_out := c_clip; -- Round clip to +max to avoid wrap to 0
|
ELSE
|
ELSE
|
v_out := RESIZE_NUM(SHIFT_RIGHT(v_in + c_half, n), c_out_w); -- Round up
|
v_out := RESIZE_NUM(SHIFT_RIGHT(v_in + c_half, n), c_out_w); -- Round up
|
END IF;
|
END IF;
|
ELSE
|
ELSE
|
v_out := RESIZE_NUM(v_in, c_out_w); -- NOP
|
v_out := RESIZE_NUM(v_in, c_out_w); -- NOP
|
END IF;
|
END IF;
|
RETURN STD_LOGIC_VECTOR(v_out);
|
RETURN STD_LOGIC_VECTOR(v_out);
|
END;
|
END;
|
|
|
FUNCTION u_round(vec : STD_LOGIC_VECTOR; n : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION u_round(vec : STD_LOGIC_VECTOR; n : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN u_round(vec, n, FALSE); -- no round clip
|
RETURN u_round(vec, n, FALSE); -- no round clip
|
END;
|
END;
|
|
|
FUNCTION u_to_s(u : NATURAL; w : NATURAL) RETURN INTEGER IS
|
FUNCTION u_to_s(u : NATURAL; w : NATURAL) RETURN INTEGER IS
|
VARIABLE v_u : STD_LOGIC_VECTOR(31 DOWNTO 0) := TO_UVEC(u, 32); -- via 32 bit word to avoid NUMERIC_STD.TO_SIGNED: vector truncated warming
|
VARIABLE v_u : STD_LOGIC_VECTOR(31 DOWNTO 0) := TO_UVEC(u, 32); -- via 32 bit word to avoid NUMERIC_STD.TO_SIGNED: vector truncated warming
|
BEGIN
|
BEGIN
|
RETURN TO_SINT(v_u(w-1 DOWNTO 0));
|
RETURN TO_SINT(v_u(w-1 DOWNTO 0));
|
END;
|
END;
|
|
|
FUNCTION s_to_u(s : INTEGER; w : NATURAL) RETURN NATURAL IS
|
FUNCTION s_to_u(s : INTEGER; w : NATURAL) RETURN NATURAL IS
|
VARIABLE v_s : STD_LOGIC_VECTOR(31 DOWNTO 0) := TO_SVEC(s, 32); -- via 32 bit word to avoid NUMERIC_STD.TO_SIGNED: vector truncated warming
|
VARIABLE v_s : STD_LOGIC_VECTOR(31 DOWNTO 0) := TO_SVEC(s, 32); -- via 32 bit word to avoid NUMERIC_STD.TO_SIGNED: vector truncated warming
|
BEGIN
|
BEGIN
|
RETURN TO_UINT(v_s(w-1 DOWNTO 0));
|
RETURN TO_UINT(v_s(w-1 DOWNTO 0));
|
END;
|
END;
|
|
|
FUNCTION u_wrap(u : NATURAL; w : NATURAL) RETURN NATURAL IS
|
FUNCTION u_wrap(u : NATURAL; w : NATURAL) RETURN NATURAL IS
|
VARIABLE v_u : STD_LOGIC_VECTOR(31 DOWNTO 0) := TO_UVEC(u, 32); -- via 32 bit word to avoid NUMERIC_STD.TO_SIGNED: vector truncated warming
|
VARIABLE v_u : STD_LOGIC_VECTOR(31 DOWNTO 0) := TO_UVEC(u, 32); -- via 32 bit word to avoid NUMERIC_STD.TO_SIGNED: vector truncated warming
|
BEGIN
|
BEGIN
|
RETURN TO_UINT(v_u(w-1 DOWNTO 0));
|
RETURN TO_UINT(v_u(w-1 DOWNTO 0));
|
END;
|
END;
|
|
|
FUNCTION s_wrap(s : INTEGER; w : NATURAL) RETURN INTEGER IS
|
FUNCTION s_wrap(s : INTEGER; w : NATURAL) RETURN INTEGER IS
|
VARIABLE v_s : STD_LOGIC_VECTOR(31 DOWNTO 0) := TO_SVEC(s, 32); -- via 32 bit word to avoid NUMERIC_STD.TO_SIGNED: vector truncated warming
|
VARIABLE v_s : STD_LOGIC_VECTOR(31 DOWNTO 0) := TO_SVEC(s, 32); -- via 32 bit word to avoid NUMERIC_STD.TO_SIGNED: vector truncated warming
|
BEGIN
|
BEGIN
|
RETURN TO_SINT(v_s(w-1 DOWNTO 0));
|
RETURN TO_SINT(v_s(w-1 DOWNTO 0));
|
END;
|
END;
|
|
|
FUNCTION u_clip(u : NATURAL; max : NATURAL) RETURN NATURAL IS
|
FUNCTION u_clip(u : NATURAL; max : NATURAL) RETURN NATURAL IS
|
BEGIN
|
BEGIN
|
IF u > max THEN
|
IF u > max THEN
|
RETURN max;
|
RETURN max;
|
ELSE
|
ELSE
|
RETURN u;
|
RETURN u;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION s_clip(s : INTEGER; max : NATURAL; min : INTEGER) RETURN INTEGER IS
|
FUNCTION s_clip(s : INTEGER; max : NATURAL; min : INTEGER) RETURN INTEGER IS
|
BEGIN
|
BEGIN
|
IF s < min THEN
|
IF s < min THEN
|
RETURN min;
|
RETURN min;
|
ELSE
|
ELSE
|
IF s > max THEN
|
IF s > max THEN
|
RETURN max;
|
RETURN max;
|
ELSE
|
ELSE
|
RETURN s;
|
RETURN s;
|
END IF;
|
END IF;
|
END IF;
|
END IF;
|
END;
|
END;
|
|
|
FUNCTION s_clip(s : INTEGER; max : NATURAL) RETURN INTEGER IS
|
FUNCTION s_clip(s : INTEGER; max : NATURAL) RETURN INTEGER IS
|
BEGIN
|
BEGIN
|
RETURN s_clip(s, max, -max);
|
RETURN s_clip(s, max, -max);
|
END;
|
END;
|
|
|
FUNCTION hton(a : STD_LOGIC_VECTOR; w, sz : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION hton(a : STD_LOGIC_VECTOR; w, sz : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
VARIABLE v_a : STD_LOGIC_VECTOR(a'LENGTH-1 DOWNTO 0) := a; -- map a to range [h:0]
|
VARIABLE v_a : STD_LOGIC_VECTOR(a'LENGTH-1 DOWNTO 0) := a; -- map a to range [h:0]
|
VARIABLE v_b : STD_LOGIC_VECTOR(a'LENGTH-1 DOWNTO 0) := a; -- default b = a
|
VARIABLE v_b : STD_LOGIC_VECTOR(a'LENGTH-1 DOWNTO 0) := a; -- default b = a
|
VARIABLE vL : NATURAL;
|
VARIABLE vL : NATURAL;
|
VARIABLE vK : NATURAL;
|
VARIABLE vK : NATURAL;
|
BEGIN
|
BEGIN
|
-- Note:
|
-- Note:
|
-- . if sz = 1 then v_b = v_a
|
-- . if sz = 1 then v_b = v_a
|
-- . if a'LENGTH > sz*w then v_b(a'LENGTH:sz*w) = v_a(a'LENGTH:sz*w)
|
-- . if a'LENGTH > sz*w then v_b(a'LENGTH:sz*w) = v_a(a'LENGTH:sz*w)
|
FOR vL IN 0 TO sz-1 LOOP
|
FOR vL IN 0 TO sz-1 LOOP
|
vK := sz-1 - vL;
|
vK := sz-1 - vL;
|
v_b((vL+1)*w-1 DOWNTO vL*w) := v_a((vK+1)*w-1 DOWNTO vK*w);
|
v_b((vL+1)*w-1 DOWNTO vL*w) := v_a((vK+1)*w-1 DOWNTO vK*w);
|
END LOOP;
|
END LOOP;
|
RETURN v_b;
|
RETURN v_b;
|
END FUNCTION;
|
END FUNCTION;
|
|
|
FUNCTION hton(a : STD_LOGIC_VECTOR; sz : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION hton(a : STD_LOGIC_VECTOR; sz : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN hton(a, c_byte_w, sz); -- symbol width w = c_byte_w = 8
|
RETURN hton(a, c_byte_w, sz); -- symbol width w = c_byte_w = 8
|
END FUNCTION;
|
END FUNCTION;
|
|
|
FUNCTION hton(a : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION hton(a : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
CONSTANT c_sz : NATURAL := a'LENGTH/ c_byte_w;
|
CONSTANT c_sz : NATURAL := a'LENGTH/ c_byte_w;
|
BEGIN
|
BEGIN
|
RETURN hton(a, c_byte_w, c_sz); -- symbol width w = c_byte_w = 8
|
RETURN hton(a, c_byte_w, c_sz); -- symbol width w = c_byte_w = 8
|
END FUNCTION;
|
END FUNCTION;
|
|
|
FUNCTION ntoh(a : STD_LOGIC_VECTOR; sz : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION ntoh(a : STD_LOGIC_VECTOR; sz : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN hton(a, sz); -- i.e. ntoh() = hton()
|
RETURN hton(a, sz); -- i.e. ntoh() = hton()
|
END FUNCTION;
|
END FUNCTION;
|
|
|
FUNCTION ntoh(a : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION ntoh(a : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
BEGIN
|
BEGIN
|
RETURN hton(a); -- i.e. ntoh() = hton()
|
RETURN hton(a); -- i.e. ntoh() = hton()
|
END FUNCTION;
|
END FUNCTION;
|
|
|
FUNCTION flip(a : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION flip(a : STD_LOGIC_VECTOR) RETURN STD_LOGIC_VECTOR IS
|
VARIABLE v_a : STD_LOGIC_VECTOR(a'LENGTH-1 DOWNTO 0) := a;
|
VARIABLE v_a : STD_LOGIC_VECTOR(a'LENGTH-1 DOWNTO 0) := a;
|
VARIABLE v_b : STD_LOGIC_VECTOR(a'LENGTH-1 DOWNTO 0);
|
VARIABLE v_b : STD_LOGIC_VECTOR(a'LENGTH-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
FOR I IN v_a'RANGE LOOP
|
FOR I IN v_a'RANGE LOOP
|
v_b(a'LENGTH-1-I) := v_a(I);
|
v_b(a'LENGTH-1-I) := v_a(I);
|
END LOOP;
|
END LOOP;
|
RETURN v_b;
|
RETURN v_b;
|
END;
|
END;
|
|
|
FUNCTION flip(a, w : NATURAL) RETURN NATURAL IS
|
FUNCTION flip(a, w : NATURAL) RETURN NATURAL IS
|
BEGIN
|
BEGIN
|
RETURN TO_UINT(flip(TO_UVEC(a, w)));
|
RETURN TO_UINT(flip(TO_UVEC(a, w)));
|
END;
|
END;
|
|
|
FUNCTION flip(a : t_slv_32_arr) RETURN t_slv_32_arr IS
|
FUNCTION flip(a : t_slv_32_arr) RETURN t_slv_32_arr IS
|
VARIABLE v_a : t_slv_32_arr(a'LENGTH-1 DOWNTO 0) := a;
|
VARIABLE v_a : t_slv_32_arr(a'LENGTH-1 DOWNTO 0) := a;
|
VARIABLE v_b : t_slv_32_arr(a'LENGTH-1 DOWNTO 0);
|
VARIABLE v_b : t_slv_32_arr(a'LENGTH-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
FOR I IN v_a'RANGE LOOP
|
FOR I IN v_a'RANGE LOOP
|
v_b(a'LENGTH-1-I) := v_a(I);
|
v_b(a'LENGTH-1-I) := v_a(I);
|
END LOOP;
|
END LOOP;
|
RETURN v_b;
|
RETURN v_b;
|
END;
|
END;
|
|
|
FUNCTION flip(a : t_integer_arr) RETURN t_integer_arr IS
|
FUNCTION flip(a : t_integer_arr) RETURN t_integer_arr IS
|
VARIABLE v_a : t_integer_arr(a'LENGTH-1 DOWNTO 0) := a;
|
VARIABLE v_a : t_integer_arr(a'LENGTH-1 DOWNTO 0) := a;
|
VARIABLE v_b : t_integer_arr(a'LENGTH-1 DOWNTO 0);
|
VARIABLE v_b : t_integer_arr(a'LENGTH-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
FOR I IN v_a'RANGE LOOP
|
FOR I IN v_a'RANGE LOOP
|
v_b(a'LENGTH-1-I) := v_a(I);
|
v_b(a'LENGTH-1-I) := v_a(I);
|
END LOOP;
|
END LOOP;
|
RETURN v_b;
|
RETURN v_b;
|
END;
|
END;
|
|
|
FUNCTION flip(a : t_natural_arr) RETURN t_natural_arr IS
|
FUNCTION flip(a : t_natural_arr) RETURN t_natural_arr IS
|
VARIABLE v_a : t_natural_arr(a'LENGTH-1 DOWNTO 0) := a;
|
VARIABLE v_a : t_natural_arr(a'LENGTH-1 DOWNTO 0) := a;
|
VARIABLE v_b : t_natural_arr(a'LENGTH-1 DOWNTO 0);
|
VARIABLE v_b : t_natural_arr(a'LENGTH-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
FOR I IN v_a'RANGE LOOP
|
FOR I IN v_a'RANGE LOOP
|
v_b(a'LENGTH-1-I) := v_a(I);
|
v_b(a'LENGTH-1-I) := v_a(I);
|
END LOOP;
|
END LOOP;
|
RETURN v_b;
|
RETURN v_b;
|
END;
|
END;
|
|
|
FUNCTION flip(a : t_nat_natural_arr) RETURN t_nat_natural_arr IS
|
FUNCTION flip(a : t_nat_natural_arr) RETURN t_nat_natural_arr IS
|
VARIABLE v_a : t_nat_natural_arr(a'LENGTH-1 DOWNTO 0) := a;
|
VARIABLE v_a : t_nat_natural_arr(a'LENGTH-1 DOWNTO 0) := a;
|
VARIABLE v_b : t_nat_natural_arr(a'LENGTH-1 DOWNTO 0);
|
VARIABLE v_b : t_nat_natural_arr(a'LENGTH-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
FOR I IN v_a'RANGE LOOP
|
FOR I IN v_a'RANGE LOOP
|
v_b(a'LENGTH-1-I) := v_a(I);
|
v_b(a'LENGTH-1-I) := v_a(I);
|
END LOOP;
|
END LOOP;
|
RETURN v_b;
|
RETURN v_b;
|
END;
|
END;
|
|
|
FUNCTION transpose(a : STD_LOGIC_VECTOR; row, col : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION transpose(a : STD_LOGIC_VECTOR; row, col : NATURAL) RETURN STD_LOGIC_VECTOR IS
|
VARIABLE vIn : STD_LOGIC_VECTOR(a'LENGTH-1 DOWNTO 0);
|
VARIABLE vIn : STD_LOGIC_VECTOR(a'LENGTH-1 DOWNTO 0);
|
VARIABLE vOut : STD_LOGIC_VECTOR(a'LENGTH-1 DOWNTO 0);
|
VARIABLE vOut : STD_LOGIC_VECTOR(a'LENGTH-1 DOWNTO 0);
|
BEGIN
|
BEGIN
|
vIn := a; -- map input vector to h:0 range
|
vIn := a; -- map input vector to h:0 range
|
vOut := vIn; -- default leave any unused MSbits the same
|
vOut := vIn; -- default leave any unused MSbits the same
|
FOR J IN 0 TO row-1 LOOP
|
FOR J IN 0 TO row-1 LOOP
|
FOR I IN 0 TO col-1 LOOP
|
FOR I IN 0 TO col-1 LOOP
|
vOut(J*col + I) := vIn(I*row + J); -- transpose vector, map input index [i*row+j] to output index [j*col+i]
|
vOut(J*col + I) := vIn(I*row + J); -- transpose vector, map input index [i*row+j] to output index [j*col+i]
|
END LOOP;
|
END LOOP;
|
END LOOP;
|
END LOOP;
|
RETURN vOut;
|
RETURN vOut;
|
END FUNCTION;
|
END FUNCTION;
|
|
|
FUNCTION transpose(a, row, col : NATURAL) RETURN NATURAL IS -- transpose index a = [i*row+j] to output index [j*col+i]
|
FUNCTION transpose(a, row, col : NATURAL) RETURN NATURAL IS -- transpose index a = [i*row+j] to output index [j*col+i]
|
VARIABLE vI : NATURAL;
|
VARIABLE vI : NATURAL;
|
VARIABLE vJ : NATURAL;
|
VARIABLE vJ : NATURAL;
|
BEGIN
|
BEGIN
|
vI := a / row;
|
vI := a / row;
|
vJ := a MOD row;
|
vJ := a MOD row;
|
RETURN vJ * col + vI;
|
RETURN vJ * col + vI;
|
END;
|
END;
|
|
|
FUNCTION split_w(input_w: NATURAL; min_out_w: NATURAL; max_out_w: NATURAL) RETURN NATURAL IS -- Calculate input_w in multiples as close as possible to max_out_w
|
FUNCTION split_w(input_w: NATURAL; min_out_w: NATURAL; max_out_w: NATURAL) RETURN NATURAL IS -- Calculate input_w in multiples as close as possible to max_out_w
|
-- Examples: split_w(256, 8, 32) = 32; split_w(16, 8, 32) = 16; split_w(72, 8, 32) = 18; -- Input_w must be multiple of 2.
|
-- Examples: split_w(256, 8, 32) = 32; split_w(16, 8, 32) = 16; split_w(72, 8, 32) = 18; -- Input_w must be multiple of 2.
|
VARIABLE r: NATURAL;
|
VARIABLE r: NATURAL;
|
BEGIN
|
BEGIN
|
r := input_w;
|
r := input_w;
|
FOR i IN 1 TO ceil_log2(input_w) LOOP -- Useless to divide the number beyond this
|
FOR i IN 1 TO ceil_log2(input_w) LOOP -- Useless to divide the number beyond this
|
IF r <= max_out_w AND r >= min_out_w THEN
|
IF r <= max_out_w AND r >= min_out_w THEN
|
RETURN r;
|
RETURN r;
|
ELSIF i = ceil_log2(input_w) THEN -- last iteration
|
ELSIF i = ceil_log2(input_w) THEN -- last iteration
|
RETURN 0; -- Indicates wrong values were used
|
RETURN 0; -- Indicates wrong values were used
|
END IF;
|
END IF;
|
r := r / 2;
|
r := r / 2;
|
END LOOP;
|
END LOOP;
|
END;
|
END;
|
|
|
FUNCTION pad(str: STRING; width: NATURAL; pad_char: CHARACTER) RETURN STRING IS
|
FUNCTION pad(str: STRING; width: NATURAL; pad_char: CHARACTER) RETURN STRING IS
|
VARIABLE v_str : STRING(1 TO width) := (OTHERS => pad_char);
|
VARIABLE v_str : STRING(1 TO width) := (OTHERS => pad_char);
|
BEGIN
|
BEGIN
|
v_str(width-str'LENGTH+1 TO width) := str;
|
v_str(width-str'LENGTH+1 TO width) := str;
|
RETURN v_str;
|
RETURN v_str;
|
END;
|
END;
|
|
|
FUNCTION slice_up(str: STRING; width: NATURAL; i: NATURAL) RETURN STRING IS
|
FUNCTION slice_up(str: STRING; width: NATURAL; i: NATURAL) RETURN STRING IS
|
BEGIN
|
BEGIN
|
RETURN str(i*width+1 TO (i+1)*width);
|
RETURN str(i*width+1 TO (i+1)*width);
|
END;
|
END;
|
|
|
-- If the input value is not a multiple of the desired width, the return value is padded with
|
-- If the input value is not a multiple of the desired width, the return value is padded with
|
-- the passed pad value. E.g. if input='10' and desired width is 4, return value is '0010'.
|
-- the passed pad value. E.g. if input='10' and desired width is 4, return value is '0010'.
|
FUNCTION slice_up(str: STRING; width: NATURAL; i: NATURAL; pad_char: CHARACTER) RETURN STRING IS
|
FUNCTION slice_up(str: STRING; width: NATURAL; i: NATURAL; pad_char: CHARACTER) RETURN STRING IS
|
VARIABLE padded_str : STRING(1 TO width) := (OTHERS=>'0');
|
VARIABLE padded_str : STRING(1 TO width) := (OTHERS=>'0');
|
BEGIN
|
BEGIN
|
padded_str := pad(str(i*width+1 TO (i+1)*width), width, '0');
|
padded_str := pad(str(i*width+1 TO (i+1)*width), width, '0');
|
RETURN padded_str;
|
RETURN padded_str;
|
END;
|
END;
|
|
|
FUNCTION slice_dn(str: STRING; width: NATURAL; i: NATURAL) RETURN STRING IS
|
FUNCTION slice_dn(str: STRING; width: NATURAL; i: NATURAL) RETURN STRING IS
|
BEGIN
|
BEGIN
|
RETURN str((i+1)*width-1 DOWNTO i*width);
|
RETURN str((i+1)*width-1 DOWNTO i*width);
|
END;
|
END;
|
|
|
|
|
FUNCTION nat_arr_to_concat_slv(nat_arr: t_natural_arr; nof_elements: NATURAL) RETURN STD_LOGIC_VECTOR IS
|
FUNCTION nat_arr_to_concat_slv(nat_arr: t_natural_arr; nof_elements: NATURAL) RETURN STD_LOGIC_VECTOR IS
|
VARIABLE v_concat_slv : STD_LOGIC_VECTOR(nof_elements*32-1 DOWNTO 0) := (OTHERS=>'0');
|
VARIABLE v_concat_slv : STD_LOGIC_VECTOR(nof_elements*32-1 DOWNTO 0) := (OTHERS=>'0');
|
BEGIN
|
BEGIN
|
FOR i IN 0 TO nof_elements-1 LOOP
|
FOR i IN 0 TO nof_elements-1 LOOP
|
v_concat_slv(i*32+32-1 DOWNTO i*32) := TO_UVEC(nat_arr(i), 32);
|
v_concat_slv(i*32+32-1 DOWNTO i*32) := TO_UVEC(nat_arr(i), 32);
|
END LOOP;
|
END LOOP;
|
RETURN v_concat_slv;
|
RETURN v_concat_slv;
|
END;
|
END;
|
|
|
|
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
-- common_fifo_*
|
-- common_fifo_*
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
|
|
PROCEDURE proc_common_fifo_asserts (CONSTANT c_fifo_name : IN STRING;
|
PROCEDURE proc_common_fifo_asserts (CONSTANT c_fifo_name : IN STRING;
|
CONSTANT c_note_is_ful : IN BOOLEAN;
|
CONSTANT c_note_is_ful : IN BOOLEAN;
|
CONSTANT c_fail_rd_emp : IN BOOLEAN;
|
CONSTANT c_fail_rd_emp : IN BOOLEAN;
|
SIGNAL wr_rst : IN STD_LOGIC;
|
SIGNAL wr_rst : IN STD_LOGIC;
|
SIGNAL wr_clk : IN STD_LOGIC;
|
SIGNAL wr_clk : IN STD_LOGIC;
|
SIGNAL wr_full : IN STD_LOGIC;
|
SIGNAL wr_full : IN STD_LOGIC;
|
SIGNAL wr_en : IN STD_LOGIC;
|
SIGNAL wr_en : IN STD_LOGIC;
|
SIGNAL rd_clk : IN STD_LOGIC;
|
SIGNAL rd_clk : IN STD_LOGIC;
|
SIGNAL rd_empty : IN STD_LOGIC;
|
SIGNAL rd_empty : IN STD_LOGIC;
|
SIGNAL rd_en : IN STD_LOGIC) IS
|
SIGNAL rd_en : IN STD_LOGIC) IS
|
BEGIN
|
BEGIN
|
-- c_fail_rd_emp : when TRUE report FAILURE when read from an empty FIFO, important when FIFO rd_val is not used
|
-- c_fail_rd_emp : when TRUE report FAILURE when read from an empty FIFO, important when FIFO rd_val is not used
|
-- c_note_is_ful : when TRUE report NOTE when FIFO goes full, to note that operation is on the limit
|
-- c_note_is_ful : when TRUE report NOTE when FIFO goes full, to note that operation is on the limit
|
-- FIFO overflow is always reported as FAILURE
|
-- FIFO overflow is always reported as FAILURE
|
|
|
-- The FIFO wr_full goes high at reset to indicate that it can not be written and it goes low a few cycles after reset.
|
-- The FIFO wr_full goes high at reset to indicate that it can not be written and it goes low a few cycles after reset.
|
-- Therefore only check on wr_full going high when wr_rst='0'.
|
-- Therefore only check on wr_full going high when wr_rst='0'.
|
|
|
--synthesis translate_off
|
--synthesis translate_off
|
ASSERT NOT(c_fail_rd_emp=TRUE AND rising_edge(rd_clk) AND rd_empty='1' AND rd_en='1') REPORT c_fifo_name & " : read from empty fifo occurred!" SEVERITY FAILURE;
|
ASSERT NOT(c_fail_rd_emp=TRUE AND rising_edge(rd_clk) AND rd_empty='1' AND rd_en='1') REPORT c_fifo_name & " : read from empty fifo occurred!" SEVERITY FAILURE;
|
ASSERT NOT(c_note_is_ful=TRUE AND rising_edge(wr_full) AND wr_rst='0') REPORT c_fifo_name & " : fifo is full now" SEVERITY NOTE;
|
ASSERT NOT(c_note_is_ful=TRUE AND rising_edge(wr_full) AND wr_rst='0') REPORT c_fifo_name & " : fifo is full now" SEVERITY NOTE;
|
ASSERT NOT( rising_edge(wr_clk) AND wr_full='1' AND wr_en='1') REPORT c_fifo_name & " : fifo overflow occurred!" SEVERITY FAILURE;
|
ASSERT NOT( rising_edge(wr_clk) AND wr_full='1' AND wr_en='1') REPORT c_fifo_name & " : fifo overflow occurred!" SEVERITY FAILURE;
|
--synthesis translate_on
|
--synthesis translate_on
|
END PROCEDURE proc_common_fifo_asserts;
|
END PROCEDURE proc_common_fifo_asserts;
|
|
|
|
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
-- common_fanout_tree
|
-- common_fanout_tree
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
|
|
FUNCTION func_common_fanout_tree_pipelining(c_nof_stages, c_nof_output_per_cell, c_nof_output : NATURAL;
|
FUNCTION func_common_fanout_tree_pipelining(c_nof_stages, c_nof_output_per_cell, c_nof_output : NATURAL;
|
c_cell_pipeline_factor_arr, c_cell_pipeline_arr : t_natural_arr) RETURN t_natural_arr IS
|
c_cell_pipeline_factor_arr, c_cell_pipeline_arr : t_natural_arr) RETURN t_natural_arr IS
|
CONSTANT k_cell_pipeline_factor_arr : t_natural_arr(c_nof_stages-1 DOWNTO 0) := c_cell_pipeline_factor_arr;
|
CONSTANT k_cell_pipeline_factor_arr : t_natural_arr(c_nof_stages-1 DOWNTO 0) := c_cell_pipeline_factor_arr;
|
CONSTANT k_cell_pipeline_arr : t_natural_arr(c_nof_output_per_cell-1 DOWNTO 0) := c_cell_pipeline_arr;
|
CONSTANT k_cell_pipeline_arr : t_natural_arr(c_nof_output_per_cell-1 DOWNTO 0) := c_cell_pipeline_arr;
|
VARIABLE v_stage_pipeline_arr : t_natural_arr(c_nof_output-1 DOWNTO 0) := (OTHERS=>0);
|
VARIABLE v_stage_pipeline_arr : t_natural_arr(c_nof_output-1 DOWNTO 0) := (OTHERS=>0);
|
VARIABLE v_prev_stage_pipeline_arr : t_natural_arr(c_nof_output-1 DOWNTO 0) := (OTHERS=>0);
|
VARIABLE v_prev_stage_pipeline_arr : t_natural_arr(c_nof_output-1 DOWNTO 0) := (OTHERS=>0);
|
BEGIN
|
BEGIN
|
loop_stage : FOR j IN 0 TO c_nof_stages-1 LOOP
|
loop_stage : FOR j IN 0 TO c_nof_stages-1 LOOP
|
v_prev_stage_pipeline_arr := v_stage_pipeline_arr;
|
v_prev_stage_pipeline_arr := v_stage_pipeline_arr;
|
loop_cell : FOR i IN 0 TO c_nof_output_per_cell**j-1 LOOP
|
loop_cell : FOR i IN 0 TO c_nof_output_per_cell**j-1 LOOP
|
v_stage_pipeline_arr((i+1)*c_nof_output_per_cell-1 DOWNTO i*c_nof_output_per_cell) := v_prev_stage_pipeline_arr(i) + (k_cell_pipeline_factor_arr(j) * k_cell_pipeline_arr);
|
v_stage_pipeline_arr((i+1)*c_nof_output_per_cell-1 DOWNTO i*c_nof_output_per_cell) := v_prev_stage_pipeline_arr(i) + (k_cell_pipeline_factor_arr(j) * k_cell_pipeline_arr);
|
END LOOP;
|
END LOOP;
|
END LOOP;
|
END LOOP;
|
RETURN v_stage_pipeline_arr;
|
RETURN v_stage_pipeline_arr;
|
END FUNCTION func_common_fanout_tree_pipelining;
|
END FUNCTION func_common_fanout_tree_pipelining;
|
|
|
|
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
-- common_reorder_symbol
|
-- common_reorder_symbol
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
|
|
-- Determine whether the stage I and row J index refer to any (active or redundant) 2-input reorder cell instantiation
|
-- Determine whether the stage I and row J index refer to any (active or redundant) 2-input reorder cell instantiation
|
FUNCTION func_common_reorder2_is_there(I, J : NATURAL) RETURN BOOLEAN IS
|
FUNCTION func_common_reorder2_is_there(I, J : NATURAL) RETURN BOOLEAN IS
|
VARIABLE v_odd : BOOLEAN;
|
VARIABLE v_odd : BOOLEAN;
|
VARIABLE v_even : BOOLEAN;
|
VARIABLE v_even : BOOLEAN;
|
BEGIN
|
BEGIN
|
v_odd := (I MOD 2 = 1) AND (J MOD 2 = 1); -- for odd stage at each odd row
|
v_odd := (I MOD 2 = 1) AND (J MOD 2 = 1); -- for odd stage at each odd row
|
v_even := (I MOD 2 = 0) AND (J MOD 2 = 0); -- for even stage at each even row
|
v_even := (I MOD 2 = 0) AND (J MOD 2 = 0); -- for even stage at each even row
|
RETURN v_odd OR v_even;
|
RETURN v_odd OR v_even;
|
END func_common_reorder2_is_there;
|
END func_common_reorder2_is_there;
|
|
|
-- Determine whether the stage I and row J index refer to an active 2-input reorder cell instantiation in a reorder network with N stages
|
-- Determine whether the stage I and row J index refer to an active 2-input reorder cell instantiation in a reorder network with N stages
|
FUNCTION func_common_reorder2_is_active(I, J, N : NATURAL) RETURN BOOLEAN IS
|
FUNCTION func_common_reorder2_is_active(I, J, N : NATURAL) RETURN BOOLEAN IS
|
VARIABLE v_inst : BOOLEAN;
|
VARIABLE v_inst : BOOLEAN;
|
VARIABLE v_act : BOOLEAN;
|
VARIABLE v_act : BOOLEAN;
|
BEGIN
|
BEGIN
|
v_inst := func_common_reorder2_is_there(I, J);
|
v_inst := func_common_reorder2_is_there(I, J);
|
v_act := (I > 0) AND (I <= N) AND (J > 0) AND (J < N);
|
v_act := (I > 0) AND (I <= N) AND (J > 0) AND (J < N);
|
RETURN v_inst AND v_act;
|
RETURN v_inst AND v_act;
|
END func_common_reorder2_is_active;
|
END func_common_reorder2_is_active;
|
|
|
-- Get the index K in the select setting array for the reorder2 cell on stage I and row J in a reorder network with N stages
|
-- Get the index K in the select setting array for the reorder2 cell on stage I and row J in a reorder network with N stages
|
FUNCTION func_common_reorder2_get_select_index(I, J, N : NATURAL) RETURN INTEGER IS
|
FUNCTION func_common_reorder2_get_select_index(I, J, N : NATURAL) RETURN INTEGER IS
|
CONSTANT c_nof_reorder2_per_odd_stage : NATURAL := N/2;
|
CONSTANT c_nof_reorder2_per_odd_stage : NATURAL := N/2;
|
CONSTANT c_nof_reorder2_per_even_stage : NATURAL := (N-1)/2;
|
CONSTANT c_nof_reorder2_per_even_stage : NATURAL := (N-1)/2;
|
VARIABLE v_nof_odd_stages : NATURAL;
|
VARIABLE v_nof_odd_stages : NATURAL;
|
VARIABLE v_nof_even_stages : NATURAL;
|
VARIABLE v_nof_even_stages : NATURAL;
|
VARIABLE v_offset : NATURAL;
|
VARIABLE v_offset : NATURAL;
|
VARIABLE v_K : INTEGER;
|
VARIABLE v_K : INTEGER;
|
BEGIN
|
BEGIN
|
-- for I, J that do not refer to an reorder cell instance for -1 as dummy return value.
|
-- for I, J that do not refer to an reorder cell instance for -1 as dummy return value.
|
-- for the redundant two port reorder cells at the border rows for -1 to indicate that the cell should pass on the input.
|
-- for the redundant two port reorder cells at the border rows for -1 to indicate that the cell should pass on the input.
|
v_K := -1;
|
v_K := -1;
|
IF func_common_reorder2_is_active(I, J, N) THEN
|
IF func_common_reorder2_is_active(I, J, N) THEN
|
-- for the active two port reorder cells use the setting at index v_K from the select setting array
|
-- for the active two port reorder cells use the setting at index v_K from the select setting array
|
v_nof_odd_stages := I/2;
|
v_nof_odd_stages := I/2;
|
v_nof_even_stages := (I-1)/2;
|
v_nof_even_stages := (I-1)/2;
|
v_offset := (J-1)/2; -- suits both odd stage and even stage
|
v_offset := (J-1)/2; -- suits both odd stage and even stage
|
v_K := v_nof_odd_stages * c_nof_reorder2_per_odd_stage + v_nof_even_stages * c_nof_reorder2_per_even_stage + v_offset;
|
v_K := v_nof_odd_stages * c_nof_reorder2_per_odd_stage + v_nof_even_stages * c_nof_reorder2_per_even_stage + v_offset;
|
END IF;
|
END IF;
|
RETURN v_K;
|
RETURN v_K;
|
END func_common_reorder2_get_select_index;
|
END func_common_reorder2_get_select_index;
|
|
|
-- Get the select setting for the reorder2 cell on stage I and row J in a reorder network with N stages
|
-- Get the select setting for the reorder2 cell on stage I and row J in a reorder network with N stages
|
FUNCTION func_common_reorder2_get_select(I, J, N : NATURAL; select_arr : t_natural_arr) RETURN NATURAL IS
|
FUNCTION func_common_reorder2_get_select(I, J, N : NATURAL; select_arr : t_natural_arr) RETURN NATURAL IS
|
CONSTANT c_nof_select : NATURAL := select_arr'LENGTH;
|
CONSTANT c_nof_select : NATURAL := select_arr'LENGTH;
|
CONSTANT c_select_arr : t_natural_arr(c_nof_select-1 DOWNTO 0) := select_arr; -- force range downto 0
|
CONSTANT c_select_arr : t_natural_arr(c_nof_select-1 DOWNTO 0) := select_arr; -- force range downto 0
|
VARIABLE v_sel : NATURAL;
|
VARIABLE v_sel : NATURAL;
|
VARIABLE v_K : INTEGER;
|
VARIABLE v_K : INTEGER;
|
BEGIN
|
BEGIN
|
v_sel := 0;
|
v_sel := 0;
|
v_K := func_common_reorder2_get_select_index(I, J, N);
|
v_K := func_common_reorder2_get_select_index(I, J, N);
|
IF v_K>=0 THEN
|
IF v_K>=0 THEN
|
v_sel := c_select_arr(v_K);
|
v_sel := c_select_arr(v_K);
|
END IF;
|
END IF;
|
RETURN v_sel;
|
RETURN v_sel;
|
END func_common_reorder2_get_select;
|
END func_common_reorder2_get_select;
|
|
|
-- Determine the inverse of a reorder network by using two reorder networks in series
|
-- Determine the inverse of a reorder network by using two reorder networks in series
|
FUNCTION func_common_reorder2_inverse_select(N : NATURAL; select_arr : t_natural_arr) RETURN t_natural_arr IS
|
FUNCTION func_common_reorder2_inverse_select(N : NATURAL; select_arr : t_natural_arr) RETURN t_natural_arr IS
|
CONSTANT c_nof_select : NATURAL := select_arr'LENGTH;
|
CONSTANT c_nof_select : NATURAL := select_arr'LENGTH;
|
CONSTANT c_select_arr : t_natural_arr(c_nof_select-1 DOWNTO 0) := select_arr; -- force range downto 0
|
CONSTANT c_select_arr : t_natural_arr(c_nof_select-1 DOWNTO 0) := select_arr; -- force range downto 0
|
VARIABLE v_sel : NATURAL;
|
VARIABLE v_sel : NATURAL;
|
VARIABLE v_Ki : INTEGER;
|
VARIABLE v_Ki : INTEGER;
|
VARIABLE v_Ii : NATURAL;
|
VARIABLE v_Ii : NATURAL;
|
VARIABLE v_inverse_arr : t_natural_arr(2*c_nof_select-1 DOWNTO 0) := (OTHERS=>0); -- default set identity for the reorder2 cells in both reorder instances
|
VARIABLE v_inverse_arr : t_natural_arr(2*c_nof_select-1 DOWNTO 0) := (OTHERS=>0); -- default set identity for the reorder2 cells in both reorder instances
|
BEGIN
|
BEGIN
|
-- the inverse select consists of inverse_in reorder and inverse_out reorder in series
|
-- the inverse select consists of inverse_in reorder and inverse_out reorder in series
|
IF N MOD 2 = 1 THEN
|
IF N MOD 2 = 1 THEN
|
-- N is odd so only need to fill in the inverse_in reorder, the inverse_out reorder remains at default pass on
|
-- N is odd so only need to fill in the inverse_in reorder, the inverse_out reorder remains at default pass on
|
FOR I IN 1 TO N LOOP
|
FOR I IN 1 TO N LOOP
|
FOR J IN 0 TO N-1 LOOP
|
FOR J IN 0 TO N-1 LOOP
|
-- get the DUT setting
|
-- get the DUT setting
|
v_sel := func_common_reorder2_get_select(I, J, N, c_select_arr);
|
v_sel := func_common_reorder2_get_select(I, J, N, c_select_arr);
|
-- map DUT I to inverse v_Ii stage index and determine the index for the inverse setting
|
-- map DUT I to inverse v_Ii stage index and determine the index for the inverse setting
|
v_Ii := 1+N-I;
|
v_Ii := 1+N-I;
|
v_Ki := func_common_reorder2_get_select_index(v_Ii, J, N);
|
v_Ki := func_common_reorder2_get_select_index(v_Ii, J, N);
|
IF v_Ki>=0 THEN
|
IF v_Ki>=0 THEN
|
v_inverse_arr(v_Ki) := v_sel;
|
v_inverse_arr(v_Ki) := v_sel;
|
END IF;
|
END IF;
|
END LOOP;
|
END LOOP;
|
END LOOP;
|
END LOOP;
|
ELSE
|
ELSE
|
-- N is even so only use stage 1 of the inverse_out reorder, the other stages remain at default pass on
|
-- N is even so only use stage 1 of the inverse_out reorder, the other stages remain at default pass on
|
FOR K IN 0 TO N/2-1 LOOP
|
FOR K IN 0 TO N/2-1 LOOP
|
v_Ki := c_nof_select + K; -- stage 1 of the inverse_out reorder
|
v_Ki := c_nof_select + K; -- stage 1 of the inverse_out reorder
|
v_inverse_arr(v_Ki) := c_select_arr(K);
|
v_inverse_arr(v_Ki) := c_select_arr(K);
|
END LOOP;
|
END LOOP;
|
-- N is even so leave stage 1 of the inverse_in reorder at default pass on, and do inverse the other stages
|
-- N is even so leave stage 1 of the inverse_in reorder at default pass on, and do inverse the other stages
|
FOR I IN 2 TO N LOOP
|
FOR I IN 2 TO N LOOP
|
FOR J IN 0 TO N-1 LOOP
|
FOR J IN 0 TO N-1 LOOP
|
-- get the DUT setting
|
-- get the DUT setting
|
v_sel := func_common_reorder2_get_select(I, J, N, c_select_arr);
|
v_sel := func_common_reorder2_get_select(I, J, N, c_select_arr);
|
-- map DUT I to inverse v_Ii stage index and determine the index for the inverse setting
|
-- map DUT I to inverse v_Ii stage index and determine the index for the inverse setting
|
v_Ii := 2+N-I;
|
v_Ii := 2+N-I;
|
v_Ki := func_common_reorder2_get_select_index(v_Ii, J, N);
|
v_Ki := func_common_reorder2_get_select_index(v_Ii, J, N);
|
IF v_Ki>=0 THEN
|
IF v_Ki>=0 THEN
|
v_inverse_arr(v_Ki) := v_sel;
|
v_inverse_arr(v_Ki) := v_sel;
|
END IF;
|
END IF;
|
END LOOP;
|
END LOOP;
|
END LOOP;
|
END LOOP;
|
END IF;
|
END IF;
|
RETURN v_inverse_arr;
|
RETURN v_inverse_arr;
|
END func_common_reorder2_inverse_select;
|
END func_common_reorder2_inverse_select;
|
|
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
-- PROCEDURE: Generate faster sample SCLK from digital DCLK for sim only
|
-- PROCEDURE: Generate faster sample SCLK from digital DCLK for sim only
|
-- Description:
|
-- Description:
|
-- The SCLK kan be used to serialize Pfactor >= 1 symbols per word and then
|
-- The SCLK kan be used to serialize Pfactor >= 1 symbols per word and then
|
-- view them in a scope component that is use internally in the design.
|
-- view them in a scope component that is use internally in the design.
|
-- The scope component is only instantiated for simulation, to view the
|
-- The scope component is only instantiated for simulation, to view the
|
-- serialized symbols, typically with decimal radix and analogue format.
|
-- serialized symbols, typically with decimal radix and analogue format.
|
-- The scope component will not be synthesized, because the SCLK can not
|
-- The scope component will not be synthesized, because the SCLK can not
|
-- be synthesized.
|
-- be synthesized.
|
--
|
--
|
-- Pfactor = 4
|
-- Pfactor = 4
|
-- _______ _______ _______ _______
|
-- _______ _______ _______ _______
|
-- DCLK ___| |_______| |_______| |_______| |_______
|
-- DCLK ___| |_______| |_______| |_______| |_______
|
-- ___________________ _ _ _ _ _ _ _ _ _ _ _ _
|
-- ___________________ _ _ _ _ _ _ _ _ _ _ _ _
|
-- SCLK |_| |_| |_| |_| |_| |_| |_| |_| |_| |_| |_| |_|
|
-- SCLK |_| |_| |_| |_| |_| |_| |_| |_| |_| |_| |_| |_|
|
--
|
--
|
-- The rising edges of SCLK occur after the rising edge of DCLK, to ensure
|
-- The rising edges of SCLK occur after the rising edge of DCLK, to ensure
|
-- that they all apply to the same wide data word that was clocked by the
|
-- that they all apply to the same wide data word that was clocked by the
|
-- rising edge of the DCLK.
|
-- rising edge of the DCLK.
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
PROCEDURE proc_common_dclk_generate_sclk(CONSTANT Pfactor : IN POSITIVE;
|
PROCEDURE proc_common_dclk_generate_sclk(CONSTANT Pfactor : IN POSITIVE;
|
SIGNAL dclk : IN STD_LOGIC;
|
SIGNAL dclk : IN STD_LOGIC;
|
SIGNAL sclk : INOUT STD_LOGIC) IS
|
SIGNAL sclk : INOUT STD_LOGIC) IS
|
VARIABLE v_dperiod : TIME;
|
VARIABLE v_dperiod : TIME;
|
VARIABLE v_speriod : TIME;
|
VARIABLE v_speriod : TIME;
|
BEGIN
|
BEGIN
|
SCLK <= '1';
|
SCLK <= '1';
|
-- Measure DCLK period
|
-- Measure DCLK period
|
WAIT UNTIL rising_edge(DCLK);
|
WAIT UNTIL rising_edge(DCLK);
|
v_dperiod := NOW;
|
v_dperiod := NOW;
|
WAIT UNTIL rising_edge(DCLK);
|
WAIT UNTIL rising_edge(DCLK);
|
v_dperiod := NOW - v_dperiod;
|
v_dperiod := NOW - v_dperiod;
|
v_speriod := v_dperiod / Pfactor;
|
v_speriod := v_dperiod / Pfactor;
|
-- Generate Pfactor SCLK periods per DCLK period
|
-- Generate Pfactor SCLK periods per DCLK period
|
WHILE TRUE LOOP
|
WHILE TRUE LOOP
|
-- Realign at every DCLK
|
-- Realign at every DCLK
|
WAIT UNTIL rising_edge(DCLK);
|
WAIT UNTIL rising_edge(DCLK);
|
-- Create Pfactor SCLK periods within this DCLK period
|
-- Create Pfactor SCLK periods within this DCLK period
|
SCLK <= '0';
|
SCLK <= '0';
|
IF Pfactor>1 THEN
|
IF Pfactor>1 THEN
|
FOR I IN 0 TO 2*Pfactor-1-2 LOOP
|
FOR I IN 0 TO 2*Pfactor-1-2 LOOP
|
WAIT FOR v_speriod/2;
|
WAIT FOR v_speriod/2;
|
SCLK <= NOT SCLK;
|
SCLK <= NOT SCLK;
|
END LOOP;
|
END LOOP;
|
END IF;
|
END IF;
|
WAIT FOR v_speriod/2;
|
WAIT FOR v_speriod/2;
|
SCLK <= '1';
|
SCLK <= '1';
|
-- Wait for next DCLK
|
-- Wait for next DCLK
|
END LOOP;
|
END LOOP;
|
WAIT;
|
WAIT;
|
END proc_common_dclk_generate_sclk;
|
END proc_common_dclk_generate_sclk;
|
|
|
END common_pkg;
|
END common_pkg;
|
|
|
|
|