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/* -*- c++ -*- */
/*
* Copyright 2004,2013,2018 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <gnuradio/fxpt_nco.h>
#include <gnuradio/nco.h>
#include <unistd.h>
#include <boost/test/unit_test.hpp>
#include <cmath>
static const float SIN_COS_TOLERANCE = 1e-5;
// static const float SIN_COS_FREQ = 5003;
static const float SIN_COS_FREQ = 4096;
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::nco<float, float> ref_nco;
gr::fxpt_nco new_nco;
double max_error = 0, max_phase_error = 0;
ref_nco.set_freq((float)(2 * GR_M_PI / SIN_COS_FREQ));
new_nco.set_freq((float)(2 * GR_M_PI / SIN_COS_FREQ));
BOOST_CHECK(std::abs(ref_nco.get_freq() - new_nco.get_freq()) <= SIN_COS_TOLERANCE);
for (int i = 0; i < SIN_COS_BLOCK_SIZE; i++) {
float ref_sin = ref_nco.sin();
float new_sin = new_nco.sin();
// printf ("i = %6d\n", i);
BOOST_CHECK(std::abs(ref_sin - new_sin) <= SIN_COS_TOLERANCE);
max_error = max_d(max_error, ref_sin - new_sin);
float ref_cos = ref_nco.cos();
float new_cos = new_nco.cos();
BOOST_CHECK(std::abs(ref_cos - new_cos) <= SIN_COS_TOLERANCE);
max_error = max_d(max_error, ref_cos - new_cos);
ref_nco.step();
new_nco.step();
BOOST_CHECK(std::abs(ref_nco.get_phase() - new_nco.get_phase()) <=
SIN_COS_TOLERANCE);
max_phase_error =
max_d(max_phase_error, ref_nco.get_phase() - new_nco.get_phase());
}
}
BOOST_AUTO_TEST_CASE(t1)
{
gr::nco<float, float> ref_nco;
gr::fxpt_nco new_nco;
std::vector<gr_complex> ref_block(SIN_COS_BLOCK_SIZE);
std::vector<gr_complex> new_block(SIN_COS_BLOCK_SIZE);
double max_error = 0;
ref_nco.set_freq((float)(2 * GR_M_PI / SIN_COS_FREQ));
new_nco.set_freq((float)(2 * GR_M_PI / SIN_COS_FREQ));
BOOST_CHECK(std::abs(ref_nco.get_freq() - new_nco.get_freq()) <= SIN_COS_TOLERANCE);
ref_nco.sincos((gr_complex*)ref_block.data(), SIN_COS_BLOCK_SIZE);
new_nco.sincos((gr_complex*)new_block.data(), SIN_COS_BLOCK_SIZE);
for (int i = 0; i < SIN_COS_BLOCK_SIZE; i++) {
BOOST_CHECK(std::abs(ref_block[i].real() - new_block[i].real()) <=
SIN_COS_TOLERANCE);
max_error = max_d(max_error, ref_block[i].real() - new_block[i].real());
BOOST_CHECK(std::abs(ref_block[i].imag() - new_block[i].imag()) <=
SIN_COS_TOLERANCE);
max_error = max_d(max_error, ref_block[i].imag() - new_block[i].imag());
}
BOOST_CHECK(std::abs(ref_nco.get_phase() - new_nco.get_phase()) <= SIN_COS_TOLERANCE);
}
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