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- /*
- * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
- #include <inttypes.h>
- #include <stdio.h>
- #include <assert.h>
- #include "softfloat.h"
- #include "common.h"
- #include "log.h"
- #undef printf
- int main(void){
- 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;
- }
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