mirror of https://git.ffmpeg.org/ffmpeg.git
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
#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;
|
|
}
|