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avutil/softfloat: Add tests for exponent underflows

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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-11-08 14:07:22 +01:00
parent 046218b212
commit 596dfe7d6c
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);
sf1 = (SoftFloat){ 0x20000000, MIN_EXP };
sf1 = av_mul_sf(sf1, sf1);
printf("test5 softfloat: %.10lf (0x%08x %d)\n", (double)av_sf2double(sf1), sf1.mant, sf1.exp);
sf1 = (SoftFloat){ 0x20000000, MIN_EXP };
sf2 = (SoftFloat){ 0x20000000, MAX_EXP };
i = av_cmp_sf(sf1, sf2);
j = av_cmp_sf(sf2, sf1);
sf1 = av_div_sf(sf1, sf2);
printf("test6 softfloat: %.10lf (0x%08x %d) %d %d\n", (double)av_sf2double(sf1), sf1.mant, sf1.exp, i, j);
for(i= 0; i<4*36; i++){
int s, c;
double errs, errc;