| /* Return 1 if argument is a NaN, else 0. |
| Copyright (C) 2007-2014 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/>. */ |
| |
| /* Ugly kludge to avoid declarations. */ |
| #define __isnanf not___isnanf |
| #define isnanf not_isnanf |
| #define __GI___isnanf not__GI___isnanf |
| |
| #include <math.h> |
| #include <math_ldbl_opt.h> |
| |
| #undef __isnanf |
| #undef isnanf |
| #undef __GI___isnanf |
| |
| int |
| __isnan (double x) |
| { |
| return isunordered (x, x); |
| } |
| |
| hidden_def (__isnan) |
| weak_alias (__isnan, isnan) |
| |
| /* It turns out that the 'double' version will also always work for |
| single-precision. */ |
| strong_alias (__isnan, __isnanf) |
| weak_alias (__isnan, isnanf) |
| |
| /* ??? GCC 4.8 fails to look through chains of aliases with asm names |
| attached. Work around this for now. */ |
| hidden_ver (__isnan, __isnanf) |
| |
| #ifdef NO_LONG_DOUBLE |
| strong_alias (__isnan, __isnanl) |
| weak_alias (__isnan, isnanl) |
| #endif |
| #if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0) |
| compat_symbol (libc, __isnan, __isnanl, GLIBC_2_0); |
| compat_symbol (libc, isnan, isnanl, GLIBC_2_0); |
| #endif |
