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1 | /* Copyright (C) 2011-2020 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 | <https://www.gnu.org/licenses/>. */ | |
18 | ||
19 | ||
20 | /* | |
21 | * wrapper exp10f(x) | |
22 | */ | |
23 | ||
24 | #include <math.h> | |
25 | #include <math_private.h> | |
26 | #include <math-svid-compat.h> | |
27 | #include <libm-alias-float.h> | |
28 | ||
29 | #if LIBM_SVID_COMPAT | |
30 | float | |
31 | __exp10f (float x) | |
32 | { | |
33 | float z = __ieee754_exp10f (x); | |
34 | if (__builtin_expect (!isfinite (z) || z == 0, 0) | |
35 | && isfinite (x) && _LIB_VERSION != _IEEE_) | |
36 | /* exp10f overflow (146) if x > 0, underflow (147) if x < 0. */ | |
37 | return __kernel_standard_f (x, x, 146 + !!signbit (x)); | |
38 | ||
39 | return z; | |
40 | } | |
41 | libm_alias_float (__exp10, exp10) | |
42 | # if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_27) | |
43 | strong_alias (__exp10f, __pow10f) | |
44 | compat_symbol (libm, __pow10f, pow10f, GLIBC_2_1); | |
45 | # endif | |
46 | #endif |