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/* -*- c++ -*- */
/*
* Copyright 2004,2005,2013 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* GNU Radio is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "vco.h"
#include <gnuradio/fxpt_vco.h>
#include <boost/test/unit_test.hpp>
#include <iostream>
#include <stdio.h>
#include <unistd.h>
#include <math.h>
static const float SIN_COS_TOLERANCE = 1e-5;
static const float SIN_COS_K = 0.42;
static const float SIN_COS_AMPL = 0.8;
static const int SIN_COS_BLOCK_SIZE = 100000;
static double max_d(double a, double b)
{
return fabs(a) > fabs(b) ? a : b;
}
BOOST_AUTO_TEST_CASE(t0) {
gr::vco<float,float> ref_vco;
gr::fxpt_vco new_vco;
double max_error = 0, max_phase_error = 0;
float input[SIN_COS_BLOCK_SIZE];
for(int i = 0; i < SIN_COS_BLOCK_SIZE; i++) {
input[i] = sin(double(i));
}
for(int i = 0; i < SIN_COS_BLOCK_SIZE; i++) {
float ref_cos = ref_vco.cos();
float new_cos = new_vco.cos();
BOOST_CHECK(std::abs(ref_cos - new_cos) <= SIN_COS_TOLERANCE);
max_error = max_d(max_error, ref_cos-new_cos);
ref_vco.adjust_phase(input[i]);
new_vco.adjust_phase(input[i]);
BOOST_CHECK(std::abs(ref_vco.get_phase() - new_vco.get_phase()) <= SIN_COS_TOLERANCE);
max_phase_error = max_d(max_phase_error, ref_vco.get_phase()-new_vco.get_phase());
}
// printf ("Fxpt max error %.9f, max phase error %.9f\n", max_error, max_phase_error);
}
BOOST_AUTO_TEST_CASE(t1) {
gr::vco<float,float> ref_vco;
gr::fxpt_vco new_vco;
float *ref_block = new float[SIN_COS_BLOCK_SIZE];
float *new_block = new float[SIN_COS_BLOCK_SIZE];
float *input = new float[SIN_COS_BLOCK_SIZE];
double max_error = 0;
for(int i = 0; i < SIN_COS_BLOCK_SIZE; i++) {
input[i] = sin(double(i));
}
ref_vco.cos(ref_block, input, SIN_COS_BLOCK_SIZE, SIN_COS_K, SIN_COS_AMPL);
new_vco.cos(new_block, input, SIN_COS_BLOCK_SIZE, SIN_COS_K, SIN_COS_AMPL);
for(int i = 0; i < SIN_COS_BLOCK_SIZE; i++) {
BOOST_CHECK(std::abs(ref_block[i] - new_block[i]) <= SIN_COS_TOLERANCE);
max_error = max_d(max_error, ref_block[i]-new_block[i]);
}
BOOST_CHECK(std::abs(ref_vco.get_phase() - new_vco.get_phase()) <= SIN_COS_TOLERANCE);
// printf ("Fxpt max error %.9f, max phase error %.9f\n", max_error, ref_vco.get_phase()-new_vco.get_phase());
delete[] ref_block;
delete[] new_block;
delete[] input;
}
BOOST_AUTO_TEST_CASE(t2) {
gr::vco<gr_complex,float> ref_vco;
gr::fxpt_vco new_vco;
gr_complex *ref_block = new gr_complex[SIN_COS_BLOCK_SIZE];
gr_complex *new_block = new gr_complex[SIN_COS_BLOCK_SIZE];
float *input = new float[SIN_COS_BLOCK_SIZE];
double max_error = 0;
for(int i = 0; i < SIN_COS_BLOCK_SIZE; i++) {
input[i] = sin(double(i));
}
ref_vco.sincos(ref_block, input, SIN_COS_BLOCK_SIZE, SIN_COS_K, SIN_COS_AMPL);
new_vco.sincos(new_block, input, SIN_COS_BLOCK_SIZE, SIN_COS_K, SIN_COS_AMPL);
for(int i = 0; i < SIN_COS_BLOCK_SIZE; i++) {
BOOST_CHECK(std::abs(ref_block[i] - new_block[i]) <= SIN_COS_TOLERANCE);
max_error = max_d(max_error, abs(ref_block[i]-new_block[i]));
}
BOOST_CHECK(
std::abs(ref_vco.get_phase() - new_vco.get_phase()) <= SIN_COS_TOLERANCE
);
// printf ("Fxpt max error %.9f, max phase error %.9f\n", max_error, ref_vco.get_phase()-new_vco.get_phase());
delete[] ref_block;
delete[] new_block;
delete[] input;
}
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