2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
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.
26 * \file mesa_private.h
27 * Contains mesa internal values
31 #ifndef MESA_PRIVATE_H
32 #define MESA_PRIVATE_H
42 * Sometimes we treat floats as ints. On x86 systems, moving a float
43 * as an int (thereby using integer registers instead of FP registers) is
44 * a performance win. Typically, this can be done with ordinary casts.
45 * But with gcc's -fstrict-aliasing flag (which defaults to on in gcc 3.0)
46 * these casts generate warnings.
47 * The following union typedef is used to solve that.
49 typedef union { float f
; int i
; unsigned u
; } fi_type
;
56 #endif /* MESA_PRIVATE_H */