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2b778ceb | 1 | /* Copyright (C) 2011-2021 Free Software Foundation, Inc. |
bcf01e6d | 2 | This file is part of the GNU C Library. |
bcf01e6d UD |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
f7eac6eb | 8 | |
bcf01e6d UD |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Lesser General Public License for more details. | |
f7eac6eb | 13 | |
bcf01e6d | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
bcf01e6d UD |
17 | |
18 | #include <math.h> | |
19 | #include <math_private.h> | |
813378e9 | 20 | #include <math-svid-compat.h> |
9ac44708 | 21 | #include <libm-alias-double.h> |
f7eac6eb | 22 | |
c20a1056 SN |
23 | #if LIBM_SVID_COMPAT && (SHLIB_COMPAT (libm, GLIBC_2_0, GLIBC_2_29) \ |
24 | || defined NO_LONG_DOUBLE \ | |
25 | || defined LONG_DOUBLE_COMPAT) | |
bcf01e6d UD |
26 | /* wrapper exp */ |
27 | double | |
c20a1056 | 28 | __exp_compat (double x) |
f7eac6eb | 29 | { |
41498f4d | 30 | double z = __ieee754_exp (x); |
d81f90cc WD |
31 | if (__builtin_expect (!isfinite (z) || z == 0, 0) |
32 | && isfinite (x) && _LIB_VERSION != _IEEE_) | |
33 | return __kernel_standard (x, x, 6 + !!signbit (x)); | |
bcf01e6d | 34 | |
41498f4d | 35 | return z; |
f7eac6eb | 36 | } |
c20a1056 SN |
37 | # if SHLIB_COMPAT (libm, GLIBC_2_0, GLIBC_2_29) |
38 | compat_symbol (libm, __exp_compat, exp, GLIBC_2_0); | |
39 | # endif | |
40 | # ifdef NO_LONG_DOUBLE | |
41 | weak_alias (__exp_compat, expl) | |
42 | # endif | |
43 | # ifdef LONG_DOUBLE_COMPAT | |
44 | /* Work around gas bug "multiple versions for symbol". */ | |
45 | weak_alias (__exp_compat, __exp_compat_alias) | |
46 | ||
47 | LONG_DOUBLE_COMPAT_CHOOSE_libm_expl ( | |
48 | compat_symbol (libm, __exp_compat_alias, expl, FIRST_VERSION_libm_expl), ); | |
49 | # endif | |
cccda09f | 50 | #endif |