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 <assert.h>
24#include "softfloat.h"
25#include "common.h"
26#include "log.h"
27
28#undef printf
29
30int main(void){
31    SoftFloat one= av_int2sf(1, 0);
32    SoftFloat sf1, sf2;
33    double d1, d2;
34    int i, j;
35av_log_level = AV_LOG_DEBUG;
36
37    d1= 1;
38    for(i= 0; i<10; i++){
39        d1= 1/(d1+1);
40    }
41    printf("test1 double=%d\n", (int)(d1 * (1<<24)));
42
43    sf1= one;
44    for(i= 0; i<10; i++){
45        sf1= av_div_sf(one, av_normalize_sf(av_add_sf(one, sf1)));
46    }
47    printf("test1 sf    =%d\n", av_sf2int(sf1, 24));
48
49
50    for(i= 0; i<100; i++){
51        START_TIMER
52        d1= i;
53        d2= i/100.0;
54        for(j= 0; j<1000; j++){
55            d1= (d1+1)*d2;
56        }
57        STOP_TIMER("float add mul")
58    }
59    printf("test2 double=%d\n", (int)(d1 * (1<<24)));
60
61    for(i= 0; i<100; i++){
62        START_TIMER
63        sf1= av_int2sf(i, 0);
64        sf2= av_div_sf(av_int2sf(i, 2), av_int2sf(200, 3));
65        for(j= 0; j<1000; j++){
66            sf1= av_mul_sf(av_add_sf(sf1, one),sf2);
67        }
68        STOP_TIMER("softfloat add mul")
69    }
70    printf("test2 sf    =%d (%d %d)\n", av_sf2int(sf1, 24), sf1.exp, sf1.mant);
71    return 0;
72}
73