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/*
* SpanDSP - a series of DSP components for telephony
*
* complex_vector_int_tests.c
*
* Written by Steve Underwood <steveu@coppice.org>
*
* Copyright (C) 2006 Steve Underwood
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2, as
* published by the Free Software Foundation.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#if defined(HAVE_CONFIG_H)
#include "config.h"
#endif
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#include "spandsp.h"
static complexi32_t cvec_dot_prodi16_dumb(const complexi16_t x[], const complexi16_t y[], int n)
{
complexi32_t z;
int i;
z = complex_seti32(0, 0);
for (i = 0; i < n; i++)
{
z.re += ((int32_t) x[i].re*(int32_t) y[i].re - (int32_t) x[i].im*(int32_t) y[i].im);
z.im += ((int32_t) x[i].re*(int32_t) y[i].im + (int32_t) x[i].im*(int32_t) y[i].re);
}
return z;
}
/*- End of function --------------------------------------------------------*/
static int test_cvec_dot_prodi16(void)
{
int i;
complexi32_t za;
complexi32_t zb;
complexi16_t x[99];
complexi16_t y[99];
for (i = 0; i < 99; i++)
{
x[i].re = rand();
x[i].im = rand();
y[i].re = rand();
y[i].im = rand();
}
for (i = 1; i < 99; i++)
{
za = cvec_dot_prodi16(x, y, i);
zb = cvec_dot_prodi16_dumb(x, y, i);
if (za.re != zb.re || za.im != zb.im)
{
printf("Tests failed\n");
exit(2);
}
}
return 0;
}
/*- End of function --------------------------------------------------------*/
static int test_cvec_circular_dot_prodi16(void)
{
int i;
int j;
int pos;
int len;
complexi32_t za;
complexi32_t zb;
complexi16_t x[99];
complexi16_t y[99];
/* Verify that we can do circular sample buffer "dot" linear coefficient buffer
operations properly, by doing two sub-dot products. */
for (i = 0; i < 99; i++)
{
x[i].re = rand();
x[i].im = rand();
y[i].re = rand();
y[i].im = rand();
}
len = 95;
for (pos = 0; pos < len; pos++)
{
za = cvec_circular_dot_prodi16(x, y, len, pos);
zb = complex_seti32(0, 0);
for (i = 0; i < len; i++)
{
j = (pos + i) % len;
zb.re += ((int32_t) x[j].re*(int32_t) y[i].re - (int32_t) x[j].im*(int32_t) y[i].im);
zb.im += ((int32_t) x[j].re*(int32_t) y[i].im + (int32_t) x[j].im*(int32_t) y[i].re);
}
if (za.re != zb.re || za.im != zb.im)
{
printf("Tests failed\n");
exit(2);
}
}
return 0;
}
/*- End of function --------------------------------------------------------*/
int main(int argc, char *argv[])
{
test_cvec_dot_prodi16();
test_cvec_circular_dot_prodi16();
printf("Tests passed.\n");
return 0;
}
/*- End of function --------------------------------------------------------*/
/*- End of file ------------------------------------------------------------*/
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