mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
52 lines
1.2 KiB
52 lines
1.2 KiB
#include <inttypes.h> |
|
#include <stdio.h> |
|
#include <assert.h> |
|
#include "softfloat.h" |
|
#include "common.h" |
|
#include "log.h" |
|
|
|
#undef printf |
|
|
|
int main(){ |
|
SoftFloat one= av_int2sf(1, 0); |
|
SoftFloat sf1, sf2; |
|
double d1, d2; |
|
int i, j; |
|
av_log_level = AV_LOG_DEBUG; |
|
|
|
d1= 1; |
|
for(i= 0; i<10; i++){ |
|
d1= 1/(d1+1); |
|
} |
|
printf("test1 double=%d\n", (int)(d1 * (1<<24))); |
|
|
|
sf1= one; |
|
for(i= 0; i<10; i++){ |
|
sf1= av_div_sf(one, av_normalize_sf(av_add_sf(one, sf1))); |
|
} |
|
printf("test1 sf =%d\n", av_sf2int(sf1, 24)); |
|
|
|
|
|
for(i= 0; i<100; i++){ |
|
START_TIMER |
|
d1= i; |
|
d2= i/100.0; |
|
for(j= 0; j<1000; j++){ |
|
d1= (d1+1)*d2; |
|
} |
|
STOP_TIMER("float add mul") |
|
} |
|
printf("test2 double=%d\n", (int)(d1 * (1<<24))); |
|
|
|
for(i= 0; i<100; i++){ |
|
START_TIMER |
|
sf1= av_int2sf(i, 0); |
|
sf2= av_div_sf(av_int2sf(i, 2), av_int2sf(200, 3)); |
|
for(j= 0; j<1000; j++){ |
|
sf1= av_mul_sf(av_add_sf(sf1, one),sf2); |
|
} |
|
STOP_TIMER("softfloat add mul") |
|
} |
|
printf("test2 sf =%d (%d %d)\n", av_sf2int(sf1, 24), sf1.exp, sf1.mant); |
|
return 0; |
|
}
|
|
|