| /* 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 atan2(y,x) |
| */ |
| |
| #include <math.h> |
| #include <math_private.h> |
| |
| |
| double |
| __atan2 (double y, double x) |
| { |
| if (__builtin_expect (x == 0.0 && y == 0.0, 0) && _LIB_VERSION == _SVID_) |
| return __kernel_standard (y, x, 3); /* atan2(+-0,+-0) */ |
| |
| return __ieee754_atan2 (y, x); |
| } |
| weak_alias (__atan2, atan2) |
| #ifdef NO_LONG_DOUBLE |
| strong_alias (__atan2, __atan2l) |
| weak_alias (__atan2, atan2l) |
| #endif |
