| /* |
| * Mesa 3-D graphics library |
| * |
| * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| #ifndef _HALF_FLOAT_H_ |
| #define _HALF_FLOAT_H_ |
| |
| #include <stdbool.h> |
| #include <stdint.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #define FP16_ONE 0x3C00 |
| #define FP16_ZERO 0 |
| |
| uint16_t _mesa_float_to_half(float val); |
| float _mesa_half_to_float(uint16_t val); |
| uint8_t _mesa_half_to_unorm8(uint16_t v); |
| uint16_t _mesa_uint16_div_64k_to_half(uint16_t v); |
| |
| static inline bool |
| _mesa_half_is_negative(uint16_t h) |
| { |
| return !!(h & 0x8000); |
| } |
| |
| |
| #ifdef __cplusplus |
| } /* extern C */ |
| #endif |
| |
| #endif /* _HALF_FLOAT_H_ */ |
