42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
/* Copyright (C) 2011-2014 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 atan2l(y,x)
|
|
*/
|
|
|
|
#include <errno.h>
|
|
#include <math.h>
|
|
#include <math_private.h>
|
|
|
|
|
|
long double
|
|
__atan2l (long double y, long double x)
|
|
{
|
|
long double z;
|
|
|
|
if (__builtin_expect (x == 0.0L && y == 0.0L, 0) && _LIB_VERSION == _SVID_)
|
|
return __kernel_standard_l (y, x, 203); /* atan2(+-0,+-0) */
|
|
|
|
z = __ieee754_atan2l (y, x);
|
|
if (__glibc_unlikely (z == 0.0L && y != 0.0L && __finitel (x)))
|
|
__set_errno (ERANGE);
|
|
return z;
|
|
}
|
|
weak_alias (__atan2l, atan2l)
|