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100 lines
2.0 KiB
100 lines
2.0 KiB
/* Test dot-product function */
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#include <stdio.h>
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#include <stdlib.h>
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#include <memory.h>
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#include <math.h>
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#include "config.h"
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#ifdef HAVE_GETOPT_H
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#include <getopt.h>
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#endif
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#include "fec.h"
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#if HAVE_GETOPT_LONG
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struct option Options[] = {
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{"force-altivec",0,NULL,'a'},
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{"force-port",0,NULL,'p'},
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{"force-mmx",0,NULL,'m'},
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{"force-sse",0,NULL,'s'},
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{"force-sse2",0,NULL,'t'},
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{"trials",0,NULL,'n'},
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{NULL},
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};
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#endif
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int main(int argc,char *argv[]){
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short coeffs[512];
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short input[2048];
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int trials=1000,d;
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int errors = 0;
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#if HAVE_GETOPT_LONG
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while((d = getopt_long(argc,argv,"apmstn:",Options,NULL)) != EOF){
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#else
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while((d = getopt(argc,argv,"apmstn:")) != EOF){
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#endif
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switch(d){
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case 'a':
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Cpu_mode = ALTIVEC;
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break;
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case 'p':
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Cpu_mode = PORT;
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break;
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case 'm':
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Cpu_mode = MMX;
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break;
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case 's':
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Cpu_mode = SSE;
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break;
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case 't':
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Cpu_mode = SSE2;
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break;
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case 'n':
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trials = atoi(optarg);
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break;
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}
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}
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while(trials--){
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long port_result;
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long simd_result;
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int ntaps;
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int i;
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int csum = 0;
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int offset;
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void *dp_simd,*dp_port;
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/* Generate set of coefficients
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* limit sum of absolute values to 32767 to avoid overflow
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*/
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memset(coeffs,0,sizeof(coeffs));
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for(i=0;i<512;i++){
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double gv;
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gv = normal_rand(0.,100.);
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if(csum + fabs(gv) > 32767)
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break;
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coeffs[i] = gv;
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csum += fabs(gv);
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}
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ntaps = i;
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/* Compare results to portable C version for a bunch of random data buffers and offsets */
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dp_simd = initdp(coeffs,ntaps);
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dp_port = initdp_port(coeffs,ntaps);
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for(i=0;i<2048;i++)
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input[i] = random();
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offset = random() & 511;
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simd_result = dotprod(dp_simd,input+offset);
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port_result = dotprod_port(dp_port,input+offset);
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if(simd_result != port_result){
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errors++;
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}
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}
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printf("dtest: %d errors\n",errors);
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exit(0);
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}
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