repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> | |
| 3 | * | |
| 4 | * This file is part of FFmpeg. | |
| 5 | * | |
| 6 | * FFmpeg is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU Lesser General Public | |
| 8 | * License as published by the Free Software Foundation; either | |
| 9 | * version 2.1 of the License, or (at your option) any later version. | |
| 10 | * | |
| 11 | * FFmpeg is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | * Lesser General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU Lesser General Public | |
| 17 | * License along with FFmpeg; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 | */ | |
| 20 | ||
| 21 | #include <inttypes.h> | |
| 22 | #include <stdio.h> | |
| 23 | #include "softfloat.h" | |
| 24 | #include "common.h" | |
| 25 | #include "log.h" | |
| 26 | ||
| 27 | #undef printf | |
| 28 | ||
| 29 | int main(void){ | |
| 30 | SoftFloat one= av_int2sf(1, 0); | |
| 31 | SoftFloat sf1, sf2; | |
| 32 | double d1, d2; | |
| 33 | int i, j; | |
| 34 | av_log_set_level(AV_LOG_DEBUG); | |
| 35 | ||
| 36 | d1= 1; | |
| 37 | for(i= 0; i<10; i++){ | |
| 38 | d1= 1/(d1+1); | |
| 39 | } | |
| 40 | printf("test1 double=%d\n", (int)(d1 * (1<<24))); | |
| 41 | ||
| 42 | sf1= one; | |
| 43 | for(i= 0; i<10; i++){ | |
| 44 | sf1= av_div_sf(one, av_normalize_sf(av_add_sf(one, sf1))); | |
| 45 | } | |
| 46 | printf("test1 sf =%d\n", av_sf2int(sf1, 24)); | |
| 47 | ||
| 48 | ||
| 49 | for(i= 0; i<100; i++){ | |
| 50 | START_TIMER | |
| 51 | d1= i; | |
| 52 | d2= i/100.0; | |
| 53 | for(j= 0; j<1000; j++){ | |
| 54 | d1= (d1+1)*d2; | |
| 55 | } | |
| 56 | STOP_TIMER("float add mul") | |
| 57 | } | |
| 58 | printf("test2 double=%d\n", (int)(d1 * (1<<24))); | |
| 59 | ||
| 60 | for(i= 0; i<100; i++){ | |
| 61 | START_TIMER | |
| 62 | sf1= av_int2sf(i, 0); | |
| 63 | sf2= av_div_sf(av_int2sf(i, 2), av_int2sf(200, 3)); | |
| 64 | for(j= 0; j<1000; j++){ | |
| 65 | sf1= av_mul_sf(av_add_sf(sf1, one),sf2); | |
| 66 | } | |
| 67 | STOP_TIMER("softfloat add mul") | |
| 68 | } | |
| 69 | printf("test2 sf =%d (%d %d)\n", av_sf2int(sf1, 24), sf1.exp, sf1.mant); | |
| 70 | return 0; | |
| 71 | } |