mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-26 23:10:06 +00:00
688903eb3e
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/* Wrapper to set errno for atan2.
|
|
Copyright (C) 2017-2018 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 <math.h>
|
|
# include <math_private.h>
|
|
|
|
FLOAT
|
|
M_DECL_FUNC (__atan2) (FLOAT y, FLOAT x)
|
|
{
|
|
FLOAT z = M_SUF (__ieee754_atan2) (y, x);
|
|
if (__glibc_unlikely (z == 0 && y != 0 && isfinite (x)))
|
|
/* Underflow. */
|
|
__set_errno (ERANGE);
|
|
return z;
|
|
}
|
|
declare_mgen_alias (__atan2, atan2)
|
|
|
|
#endif /* __USE_WRAPPER_TEMPLATE. */
|