diff options
Diffstat (limited to 'math/w_exp10_compat.c')
| -rw-r--r-- | math/w_exp10_compat.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/math/w_exp10_compat.c b/math/w_exp10_compat.c new file mode 100644 index 0000000000..1ba9279e8b --- /dev/null +++ b/math/w_exp10_compat.c @@ -0,0 +1,46 @@ +/* Copyright (C) 2011-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@gmail.com>, 2011. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + + +/* + * wrapper exp10(x) + */ + +#include <math.h> +#include <math_private.h> + +double +__exp10 (double x) +{ + double z = __ieee754_exp10 (x); + if (__builtin_expect (!isfinite (z) || z == 0, 0) + && isfinite (x) && _LIB_VERSION != _IEEE_) + /* exp10 overflow (46) if x > 0, underflow (47) if x < 0. */ + return __kernel_standard (x, x, 46 + !!signbit (x)); + + return z; +} +weak_alias (__exp10, exp10) +strong_alias (__exp10, __pow10) +weak_alias (__pow10, pow10) +#ifdef NO_LONG_DOUBLE +strong_alias (__exp10, __exp10l) +weak_alias (__exp10, exp10l) +strong_alias (__exp10l, __pow10l) +weak_alias (__pow10l, pow10l) +#endif |