Subversion Repositories xilinx_virtex_fp_library

`timescale 1ns / 1ps

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// Company: 

// Engineer: 

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// Create Date:    17:59:10 10/15/2013 

// Design Name: 

// Module Name:    accumulate 

// Project Name: 

// Target Devices: 

// Tool versions: 

// Description: 

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// Dependencies: 

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// Revision: 

// Revision 0.01 - File Created

// Additional Comments: 

//

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module accumulate #(    parameter size_mantissa = 24,   //mantissa bits

                                                        parameter size_counter  = 5,    //log2(size_quotient) + 1 = 5

                                                        parameter size_mul_mantissa = size_mantissa + size_mantissa)

                                                (       input [size_mul_mantissa-1:0] ab_number_i,

                                                        input [size_mul_mantissa-1:0] c_number_i,

                                                        input sub,

                                                        output ovf,

                                                        output[size_mul_mantissa  :0] acc_resulting_number_o);

assign {ovf, acc_resulting_number_o} = sub? ((ab_number_i >=c_number_i)? (ab_number_i - c_number_i) : (c_number_i - ab_number_i)) : c_number_i + ab_number_i;

endmodule