/* Wrapper to set errno for acos. 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 <errno.h> # include <fenv.h> # include <math.h> # include <math_private.h> FLOAT M_DECL_FUNC (__acos) (FLOAT x) { if (__glibc_unlikely (isgreater (M_SUF (fabs) (x), M_LIT (1.0)))) /* Domain error: acos(|x|>1). */ __set_errno (EDOM); return M_SUF (__ieee754_acos) (x); } declare_mgen_alias (__acos, acos) #endif /* __USE_WRAPPER_TEMPLATE. */