137 lines
3.6 KiB
C
137 lines
3.6 KiB
C
/*
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* SpanDSP - a series of DSP components for telephony
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*
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* complex_vector_int_tests.c
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*
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* Written by Steve Underwood <steveu@coppice.org>
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*
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* Copyright (C) 2006 Steve Underwood
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2, as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Id: complex_vector_int_tests.c,v 1.2 2009/04/26 07:00:39 steveu Exp $
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*/
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#if defined(HAVE_CONFIG_H)
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <string.h>
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#include "spandsp.h"
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static complexi32_t cvec_dot_prodi16_dumb(const complexi16_t x[], const complexi16_t y[], int n)
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{
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complexi32_t z;
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int i;
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z = complex_seti32(0, 0);
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for (i = 0; i < n; i++)
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{
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z.re += ((int32_t) x[i].re*(int32_t) y[i].re - (int32_t) x[i].im*(int32_t) y[i].im);
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z.im += ((int32_t) x[i].re*(int32_t) y[i].im + (int32_t) x[i].im*(int32_t) y[i].re);
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}
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return z;
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}
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/*- End of function --------------------------------------------------------*/
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static int test_cvec_dot_prodi16(void)
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{
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int i;
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complexi32_t za;
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complexi32_t zb;
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complexi16_t x[99];
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complexi16_t y[99];
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for (i = 0; i < 99; i++)
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{
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x[i].re = rand();
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x[i].im = rand();
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y[i].re = rand();
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y[i].im = rand();
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}
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for (i = 1; i < 99; i++)
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{
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za = cvec_dot_prodi16(x, y, i);
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zb = cvec_dot_prodi16_dumb(x, y, i);
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if (za.re != zb.re || za.im != zb.im)
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{
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printf("Tests failed\n");
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exit(2);
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}
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}
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return 0;
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}
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/*- End of function --------------------------------------------------------*/
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static int test_cvec_circular_dot_prodi16(void)
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{
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int i;
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int j;
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int pos;
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int len;
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complexi32_t za;
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complexi32_t zb;
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complexi16_t x[99];
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complexi16_t y[99];
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/* Verify that we can do circular sample buffer "dot" linear coefficient buffer
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operations properly, by doing two sub-dot products. */
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for (i = 0; i < 99; i++)
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{
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x[i].re = rand();
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x[i].im = rand();
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y[i].re = rand();
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y[i].im = rand();
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}
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len = 95;
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for (pos = 0; pos < len; pos++)
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{
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za = cvec_circular_dot_prodi16(x, y, len, pos);
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zb = complex_seti32(0, 0);
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for (i = 0; i < len; i++)
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{
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j = (pos + i) % len;
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zb.re += ((int32_t) x[j].re*(int32_t) y[i].re - (int32_t) x[j].im*(int32_t) y[i].im);
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zb.im += ((int32_t) x[j].re*(int32_t) y[i].im + (int32_t) x[j].im*(int32_t) y[i].re);
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}
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if (za.re != zb.re || za.im != zb.im)
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{
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printf("Tests failed\n");
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exit(2);
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}
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}
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return 0;
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}
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/*- End of function --------------------------------------------------------*/
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int main(int argc, char *argv[])
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{
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test_cvec_dot_prodi16();
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test_cvec_circular_dot_prodi16();
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printf("Tests passed.\n");
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return 0;
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}
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/*- End of function --------------------------------------------------------*/
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/*- End of file ------------------------------------------------------------*/
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