diff options
Diffstat (limited to 'libm/w_atanh.c')
-rw-r--r-- | libm/w_atanh.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/libm/w_atanh.c b/libm/w_atanh.c new file mode 100644 index 000000000..ef105abc3 --- /dev/null +++ b/libm/w_atanh.c @@ -0,0 +1,37 @@ +/* Copyright (C) 2011-2016 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/>. */ + +#include <math.h> +#include "math_private.h" + + +/* wrapper atanh */ +double +atanh (double x) +{ +#if __UCLIBC_HAS_FENV__ + if (__builtin_expect (isgreaterequal (fabs (x), 1.0), 0) + && _LIB_VERSION != _IEEE_) + return __kernel_standard (x, x, + fabs (x) > 1.0 + ? 30 /* atanh(|x|>1) */ + : 31); /* atanh(|x|==1) */ +#endif + return __ieee754_atanh (x); +} +libm_hidden_def(atanh) |