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////////////////////////////////////////////////////////////////////////////////
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//
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//
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// Filename: ifft_tb.cpp
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// Filename: ifft_tb.cpp
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//
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//
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// Project: A Doubletime Pipelined FFT
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// Project: A General Purpose Pipelined FFT Implementation
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//
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//
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// Purpose: A test-bench for the combined work of both fftmain.v and
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// Purpose: A test-bench for the combined work of both fftmain.v and
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// ifftmain.v. If they work together, in concert like they should,
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// ifftmain.v. If they work together, in concert like they should,
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// then the operation of both in series should yield an identity.
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// then the operation of both in series should yield an identity. This
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// This program attempts to check that identity with various
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// program attempts to check that identity with various inputs given to it.
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// inputs given to it.
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//
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//
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// This file has a variety of dependencies, not the least of which are
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// This file has a variety of dependencies, not the least of which
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// verilator, ifftmain.v and fftmain.v (both produced by fftgen), but also on
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// are verilator, ifftmain.v and fftmain.v (both produced by
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// the ifft_tb.v verilog test bench.
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// fftgen), but also on the ifft_tb.v verilog test bench found
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// within this directory.
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//
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//
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// Creator: Dan Gisselquist, Ph.D.
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// Creator: Dan Gisselquist, Ph.D.
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// Gisselquist Technology, LLC
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// Gisselquist Technology, LLC
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//
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//
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///////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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//
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//
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// Copyright (C) 2015, Gisselquist Technology, LLC
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// Copyright (C) 2015, Gisselquist Technology, LLC
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//
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//
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// This program is free software (firmware): you can redistribute it and/or
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// This program is free software (firmware): you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as published
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// modify it under the terms of the GNU General Public License as published
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// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
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// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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// 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 along
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// You should have received a copy of the GNU General Public License along
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// with this program. (It's in the $(ROOT)/doc directory, run make with no
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// with this program. (It's in the $(ROOT)/doc directory. Run make with no
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// target there if the PDF file isn't present.) If not, see
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// target there if the PDF file isn't present.) If not, see
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// <http://www.gnu.org/licenses/> for a copy.
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// <http://www.gnu.org/licenses/> for a copy.
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//
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//
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// License: GPL, v3, as defined and found on www.gnu.org,
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// License: GPL, v3, as defined and found on www.gnu.org,
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// http://www.gnu.org/licenses/gpl.html
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// http://www.gnu.org/licenses/gpl.html
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//
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//
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//
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//
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///////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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#include <stdio.h>
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#include <stdio.h>
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#include <math.h>
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#include <math.h>
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#include <assert.h>
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#include <assert.h>
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#include "verilated.h"
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#include "verilated.h"
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