yading@11: /*
yading@11:  * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
yading@11:  *
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: #include <inttypes.h>
yading@11: #include <stdio.h>
yading@11: #include <assert.h>
yading@11: #include "softfloat.h"
yading@11: #include "common.h"
yading@11: #include "log.h"
yading@11: 
yading@11: #undef printf
yading@11: 
yading@11: int main(void){
yading@11:     SoftFloat one= av_int2sf(1, 0);
yading@11:     SoftFloat sf1, sf2;
yading@11:     double d1, d2;
yading@11:     int i, j;
yading@11:     av_log_set_level(AV_LOG_DEBUG);
yading@11: 
yading@11:     d1= 1;
yading@11:     for(i= 0; i<10; i++){
yading@11:         d1= 1/(d1+1);
yading@11:     }
yading@11:     printf("test1 double=%d\n", (int)(d1 * (1<<24)));
yading@11: 
yading@11:     sf1= one;
yading@11:     for(i= 0; i<10; i++){
yading@11:         sf1= av_div_sf(one, av_normalize_sf(av_add_sf(one, sf1)));
yading@11:     }
yading@11:     printf("test1 sf    =%d\n", av_sf2int(sf1, 24));
yading@11: 
yading@11: 
yading@11:     for(i= 0; i<100; i++){
yading@11:         START_TIMER
yading@11:         d1= i;
yading@11:         d2= i/100.0;
yading@11:         for(j= 0; j<1000; j++){
yading@11:             d1= (d1+1)*d2;
yading@11:         }
yading@11:         STOP_TIMER("float add mul")
yading@11:     }
yading@11:     printf("test2 double=%d\n", (int)(d1 * (1<<24)));
yading@11: 
yading@11:     for(i= 0; i<100; i++){
yading@11:         START_TIMER
yading@11:         sf1= av_int2sf(i, 0);
yading@11:         sf2= av_div_sf(av_int2sf(i, 2), av_int2sf(200, 3));
yading@11:         for(j= 0; j<1000; j++){
yading@11:             sf1= av_mul_sf(av_add_sf(sf1, one),sf2);
yading@11:         }
yading@11:         STOP_TIMER("softfloat add mul")
yading@11:     }
yading@11:     printf("test2 sf    =%d (%d %d)\n", av_sf2int(sf1, 24), sf1.exp, sf1.mant);
yading@11:     return 0;
yading@11: }