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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * copyright (c) 2006 Michael Niedermayer |
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| 3 | * |
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| 4 | * This file is part of FFmpeg. |
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| 5 | * |
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| 6 | * FFmpeg is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU Lesser General Public |
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| 8 | * License as published by the Free Software Foundation; either |
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| 9 | * version 2.1 of the License, or (at your option) any later version. |
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| 10 | * |
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| 11 | * FFmpeg is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with FFmpeg; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | */ |
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| 20 | |||
| 21 | #include |
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| 22 | #include |
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| 23 | #include "softfloat.h" |
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| 24 | #include "common.h" |
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| 25 | #include "log.h" |
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| 26 | |||
| 27 | #undef printf |
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| 28 | |||
| 29 | int main(void){ |
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| 30 | SoftFloat one= av_int2sf(1, 0); |
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| 31 | SoftFloat sf1, sf2; |
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| 32 | double d1, d2; |
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| 33 | int i, j; |
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| 34 | av_log_set_level(AV_LOG_DEBUG); |
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| 35 | |||
| 36 | d1= 1; |
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| 37 | for(i= 0; i<10; i++){ |
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| 38 | d1= 1/(d1+1); |
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| 39 | } |
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| 40 | printf("test1 double=%d\n", (int)(d1 * (1<<24))); |
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| 41 | |||
| 42 | sf1= one; |
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| 43 | for(i= 0; i<10; i++){ |
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| 44 | sf1= av_div_sf(one, av_normalize_sf(av_add_sf(one, sf1))); |
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| 45 | } |
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| 46 | printf("test1 sf =%d\n", av_sf2int(sf1, 24)); |
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| 47 | |||
| 48 | |||
| 49 | for(i= 0; i<100; i++){ |
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| 50 | START_TIMER |
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| 51 | d1= i; |
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| 52 | d2= i/100.0; |
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| 53 | for(j= 0; j<1000; j++){ |
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| 54 | d1= (d1+1)*d2; |
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| 55 | } |
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| 56 | STOP_TIMER("float add mul") |
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| 57 | } |
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| 58 | printf("test2 double=%d\n", (int)(d1 * (1<<24))); |
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| 59 | |||
| 60 | for(i= 0; i<100; i++){ |
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| 61 | START_TIMER |
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| 62 | sf1= av_int2sf(i, 0); |
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| 63 | sf2= av_div_sf(av_int2sf(i, 2), av_int2sf(200, 3)); |
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| 64 | for(j= 0; j<1000; j++){ |
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| 65 | sf1= av_mul_sf(av_add_sf(sf1, one),sf2); |
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| 66 | } |
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| 67 | STOP_TIMER("softfloat add mul") |
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| 68 | } |
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| 69 | printf("test2 sf =%d (%d %d)\n", av_sf2int(sf1, 24), sf1.exp, sf1.mant); |
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| 70 | return 0; |
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| 71 | } |