ffmpeg.libavutil.intfloat source code

1 /*
2  * Copyright (c) 2011 Mans Rullgard
3  *
4  * This file is part of Libav.
5  *
6  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 module ffmpeg.libavutil.intfloat;
21 import std.stdint;
22 import std.conv;
23 
24 union av_intfloat32 {
25     uint32_t i;
26     float    f;
27 };
28 
29 union av_intfloat64 {
30     uint64_t i;
31     double   f;
32 };
33 
34 extern(C):
35 /**
36  * Reinterpret a 32-bit integer as a float.
37  */
38 static float av_int2float(uint32_t i)
39 {
40     return to!float(i);
41 }
42 
43 /**
44  * Reinterpret a float as a 32-bit integer.
45  */
46 static uint32_t av_float2int(float f)
47 {
48     return to!int(f);
49 }
50 
51 /**
52  * Reinterpret a 64-bit integer as a double.
53  */
54 static double av_int2double(uint64_t i)
55 {
56     return to!double(i);
57 }
58 
59 /**
60  * Reinterpret a double as a 64-bit integer.
61  */
62 static uint64_t av_double2int(double f)
63 {
64     return to!int(f);
65 }
66