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| | |
| | | /* |
| | | * 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 */ |