intfloat.h
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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 
21 #ifndef AVUTIL_INTFLOAT_H
22 #define AVUTIL_INTFLOAT_H
23 
24 #include <stdint.h>
25 #include "attributes.h"
26 
28  uint32_t i;
29  float f;
30 };
31 
33  uint64_t i;
34  double f;
35 };
36 
40 static av_always_inline float av_int2float(uint32_t i)
41 {
42  union av_intfloat32 v = { .i = i };
43  return v.f;
44 }
45 
49 static av_always_inline uint32_t av_float2int(float f)
50 {
51  union av_intfloat32 v = { .f = f };
52  return v.i;
53 }
54 
58 static av_always_inline double av_int2double(uint64_t i)
59 {
60  union av_intfloat64 v = { .i = i };
61  return v.f;
62 }
63 
67 static av_always_inline uint64_t av_double2int(double f)
68 {
69  union av_intfloat64 v = { .f = f };
70  return v.i;
71 }
72 
73 #endif /* AVUTIL_INTFLOAT_H */