summaryrefslogtreecommitdiff
path: root/dom/media/platforms/ffmpeg/ffmpeg58/include/libavutil/intfloat.h
blob: fe3d7ec4a5b6f5f616c103aef5a5cf7ec01f8242 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
/*
 * Copyright (c) 2011 Mans Rullgard
 *
 * 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
 */

#ifndef AVUTIL_INTFLOAT_H
#define AVUTIL_INTFLOAT_H

#include <stdint.h>
#include "attributes.h"

union av_intfloat32 {
    uint32_t i;
    float    f;
};

union av_intfloat64 {
    uint64_t i;
    double   f;
};

/**
 * Reinterpret a 32-bit integer as a float.
 */
static av_always_inline float av_int2float(uint32_t i)
{
    union av_intfloat32 v;
    v.i = i;
    return v.f;
}

/**
 * Reinterpret a float as a 32-bit integer.
 */
static av_always_inline uint32_t av_float2int(float f)
{
    union av_intfloat32 v;
    v.f = f;
    return v.i;
}

/**
 * Reinterpret a 64-bit integer as a double.
 */
static av_always_inline double av_int2double(uint64_t i)
{
    union av_intfloat64 v;
    v.i = i;
    return v.f;
}

/**
 * Reinterpret a double as a 64-bit integer.
 */
static av_always_inline uint64_t av_double2int(double f)
{
    union av_intfloat64 v;
    v.f = f;
    return v.i;
}

#endif /* AVUTIL_INTFLOAT_H */