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a2fd60437d
unused currently, but might come in handy for some fpu-less cpus Originally committed as revision 5955 to svn://svn.ffmpeg.org/ffmpeg/trunk
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
#include <inttypes.h>
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#include <stdio.h>
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#include <assert.h>
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#include "softfloat.h"
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#include "common.h"
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#include "log.h"
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#undef printf
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int main(){
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SoftFloat one= av_int2sf(1, 0);
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SoftFloat sf1, sf2;
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double d1, d2;
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int i, j;
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av_log_level = AV_LOG_DEBUG;
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d1= 1;
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for(i= 0; i<10; i++){
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d1= 1/(d1+1);
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}
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printf("test1 double=%d\n", (int)(d1 * (1<<24)));
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sf1= one;
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for(i= 0; i<10; i++){
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sf1= av_div_sf(one, av_normalize_sf(av_add_sf(one, sf1)));
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}
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printf("test1 sf =%d\n", av_sf2int(sf1, 24));
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for(i= 0; i<100; i++){
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START_TIMER
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d1= i;
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d2= i/100.0;
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for(j= 0; j<1000; j++){
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d1= (d1+1)*d2;
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}
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STOP_TIMER("float add mul")
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}
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printf("test2 double=%d\n", (int)(d1 * (1<<24)));
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for(i= 0; i<100; i++){
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START_TIMER
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sf1= av_int2sf(i, 0);
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sf2= av_div_sf(av_int2sf(i, 2), av_int2sf(200, 3));
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for(j= 0; j<1000; j++){
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sf1= av_mul_sf(av_add_sf(sf1, one),sf2);
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}
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STOP_TIMER("softfloat add mul")
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}
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printf("test2 sf =%d (%d %d)\n", av_sf2int(sf1, 24), sf1.exp, sf1.mant);
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return 0;
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}
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