| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (c) 2011 Mans Rullgard | ||
| 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 | #ifndef AVUTIL_INTFLOAT_H | ||
| 22 | #define AVUTIL_INTFLOAT_H | ||
| 23 | |||
| 24 | #include <stdint.h> | ||
| 25 | #include "attributes.h" | ||
| 26 | |||
| 27 | union av_intfloat32 { | ||
| 28 | uint32_t i; | ||
| 29 | float f; | ||
| 30 | }; | ||
| 31 | |||
| 32 | union av_intfloat64 { | ||
| 33 | uint64_t i; | ||
| 34 | double f; | ||
| 35 | }; | ||
| 36 | |||
| 37 | /** | ||
| 38 | * Reinterpret a 32-bit integer as a float. | ||
| 39 | */ | ||
| 40 | 13688979 | static av_always_inline float av_int2float(uint32_t i) | |
| 41 | { | ||
| 42 | union av_intfloat32 v; | ||
| 43 | 13688979 | v.i = i; | |
| 44 | 13688979 | return v.f; | |
| 45 | } | ||
| 46 | |||
| 47 | /** | ||
| 48 | * Reinterpret a float as a 32-bit integer. | ||
| 49 | */ | ||
| 50 | 79645848 | static av_always_inline uint32_t av_float2int(float f) | |
| 51 | { | ||
| 52 | union av_intfloat32 v; | ||
| 53 | 79645848 | v.f = f; | |
| 54 | 79645848 | return v.i; | |
| 55 | } | ||
| 56 | |||
| 57 | /** | ||
| 58 | * Reinterpret a 64-bit integer as a double. | ||
| 59 | */ | ||
| 60 | 54932 | static av_always_inline double av_int2double(uint64_t i) | |
| 61 | { | ||
| 62 | union av_intfloat64 v; | ||
| 63 | 54932 | v.i = i; | |
| 64 | 54932 | return v.f; | |
| 65 | } | ||
| 66 | |||
| 67 | /** | ||
| 68 | * Reinterpret a double as a 64-bit integer. | ||
| 69 | */ | ||
| 70 | 392 | static av_always_inline uint64_t av_double2int(double f) | |
| 71 | { | ||
| 72 | union av_intfloat64 v; | ||
| 73 | 392 | v.f = f; | |
| 74 | 392 | return v.i; | |
| 75 | } | ||
| 76 | |||
| 77 | #endif /* AVUTIL_INTFLOAT_H */ | ||
| 78 |