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avutil/softfloat: Add a test for av_sincos_sf()

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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-07-25 21:28:05 +02:00
parent fb57bc6c34
commit e171309756
1 changed files with 12 additions and 0 deletions
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12
libavutil/softfloat.c
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@ -97,6 +97,18 @@ int main(void){
sf1 = av_int2sf(0xE0000001, 0);
printf("test4 softfloat: %.10lf (0x%08x %d)\n", (double)av_sf2double(sf1), sf1.mant, sf1.exp);
for(i= 0; i<4*36; i++){
int s, c;
double errs, errc;
av_sincos_sf(i*(1ULL<<32)/36/4, &s, &c);
errs = (double)s/ (1<<30) - sin(i*M_PI/36);
errc = (double)c/ (1<<30) - cos(i*M_PI/36);
if (fabs(errs) > 0.00000002 || fabs(errc) >0.001) {
printf("sincos FAIL %d %f %f %f %f\n", i, (float)s/ (1<<30), (float)c/ (1<<30), sin(i*M_PI/36), cos(i*M_PI/36));
}
}
return 0;
}