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1 | /* Copyright (C) 2011 Free Software Foundation, Inc. | |
2 | This file is part of the GNU C Library. | |
3 | Contributed by Ulrich Drepper <drepper@gmail.com>, 2011. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <fenv.h> | |
20 | #include <math.h> | |
21 | #include <math_private.h> | |
22 | ||
23 | ||
24 | /* wrapper acosf */ | |
25 | float | |
26 | __acosf (float x) | |
27 | { | |
28 | if (__builtin_expect (fabsf (x) > 1.0f, 0) && _LIB_VERSION != _IEEE_) | |
29 | { | |
30 | /* acos(|x|>1) */ | |
31 | feraiseexcept (FE_INVALID); | |
32 | return __kernel_standard_f (x, x, 101); | |
33 | } | |
34 | ||
35 | return __ieee754_acosf (x); | |
36 | } | |
37 | weak_alias (__acosf, acosf) |