| /* Compute sine and cosine of argument. |
| Copyright (C) 1997-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. |
| |
| 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/>. */ |
| |
| #include <math.h> |
| |
| #include <math_private.h> |
| |
| |
| void |
| __sincos (double x, double *sinx, double *cosx) |
| { |
| int32_t ix; |
| |
| /* High word of x. */ |
| GET_HIGH_WORD (ix, x); |
| |
| /* |x| ~< pi/4 */ |
| ix &= 0x7fffffff; |
| if (ix >= 0x7ff00000) |
| { |
| /* sin(Inf or NaN) is NaN */ |
| *sinx = *cosx = x - x; |
| } |
| else |
| { |
| *sinx = __sin (x); |
| *cosx = __cos (x); |
| } |
| } |
| weak_alias (__sincos, sincos) |
| #ifdef NO_LONG_DOUBLE |
| strong_alias (__sincos, __sincosl) |
| weak_alias (__sincos, sincosl) |
| #endif |
