1 | /* Copyright (C) 2011-2016 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 | |
20 | /* |
21 | * wrapper exp10(x) |
22 | */ |
23 | |
24 | #include <math.h> |
25 | #include <math_private.h> |
26 | |
27 | double |
28 | __exp10 (double x) |
29 | { |
30 | double z = __ieee754_exp10 (x); |
31 | if (__builtin_expect (!isfinite (z) || z == 0, 0) |
32 | && isfinite (x) && _LIB_VERSION != _IEEE_) |
33 | /* exp10 overflow (46) if x > 0, underflow (47) if x < 0. */ |
34 | return __kernel_standard (x, x, 46 + !!signbit (x)); |
35 | |
36 | return z; |
37 | } |
38 | weak_alias (__exp10, exp10) |
39 | strong_alias (__exp10, __pow10) |
40 | weak_alias (__pow10, pow10) |
41 | #ifdef NO_LONG_DOUBLE |
42 | strong_alias (__exp10, __exp10l) |
43 | weak_alias (__exp10, exp10l) |
44 | strong_alias (__exp10l, __pow10l) |
45 | weak_alias (__pow10l, pow10l) |
46 | #endif |
47 | |