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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. | |
f7eac6eb | 4 | |
0ac5ae23 UD |
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. | |
f7eac6eb | 14 | |
0ac5ae23 UD |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
f7eac6eb | 19 | |
9d13fb24 | 20 | #include <math.h> |
9277c064 | 21 | #include <math_private.h> |
f7eac6eb RM |
22 | |
23 | ||
0ac5ae23 UD |
24 | /* wrapper atanh */ |
25 | double | |
26 | __atanh (double x) | |
f7eac6eb | 27 | { |
0ac5ae23 UD |
28 | if (__builtin_expect (fabs (x) >= 1.0, 0) && _LIB_VERSION != _IEEE_) |
29 | return __kernel_standard (x, x, | |
30 | fabs (x) > 1.0 | |
31 | ? 30 /* atanh(|x|>1) */ | |
32 | : 31); /* atanh(|x|==1) */ | |
33 | ||
34 | return __ieee754_atanh (x); | |
f7eac6eb RM |
35 | } |
36 | weak_alias (__atanh, atanh) | |
cccda09f UD |
37 | #ifdef NO_LONG_DOUBLE |
38 | strong_alias (__atanh, __atanhl) | |
39 | weak_alias (__atanh, atanhl) | |
40 | #endif |