diff options
Diffstat (limited to 'math/w_atanh_template.c')
| -rw-r--r-- | math/w_atanh_template.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/math/w_atanh_template.c b/math/w_atanh_template.c new file mode 100644 index 0000000000..771af5aff8 --- /dev/null +++ b/math/w_atanh_template.c @@ -0,0 +1,44 @@ +/* Wrapper to set errno for atanh. + Copyright (C) 2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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/>. */ + +/* Only build wrappers from the templates for the types that define the macro + below. This macro is set in math-type-macros-<type>.h in sysdeps/generic + for each floating-point type. */ +#if __USE_WRAPPER_TEMPLATE + +# include <fenv.h> +# include <math.h> +# include <math_private.h> + +FLOAT +M_DECL_FUNC (__atanh) (FLOAT x) +{ + if (__glibc_unlikely (isgreaterequal (M_SUF (fabs) (x), M_LIT (1.0)))) + { + if (M_SUF (fabs) (x) == 1) + /* Pole error: atanh(|x|==1). */ + __set_errno (ERANGE); + else + /* Domain error: atanh(|x|>1). */ + __set_errno (EDOM); + } + return M_SUF (__ieee754_atanh) (x); +} +declare_mgen_alias (__atanh, atanh) + +#endif /* __USE_WRAPPER_TEMPLATE. */ |