1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25 #ifndef _HALF_FLOAT_H_
26 #define _HALF_FLOAT_H_
27
28 #include <stdbool.h>
29 #include <stdint.h>
30
31 #ifdef __cplusplus
32 extern "C" {
33 #endif
34
35 uint16_t _mesa_float_to_half(float val);
36 float _mesa_half_to_float(uint16_t val);
37
38 static inline bool
_mesa_half_is_negative(uint16_t h)39 _mesa_half_is_negative(uint16_t h)
40 {
41 return !!(h & 0x8000);
42 }
43
44
45 #ifdef __cplusplus
46 } /* extern C */
47 #endif
48
49 #endif /* _HALF_FLOAT_H_ */
50