| /* Return quiet nan. |
| Copyright (C) 1997-2016 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 <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <ieee754.h> |
| |
| |
| #undef __nan |
| double |
| __nan (const char *tagp) |
| { |
| return __strtod_nan (tagp, NULL, 0); |
| } |
| weak_alias (__nan, nan) |
| #ifdef NO_LONG_DOUBLE |
| strong_alias (__nan, __nanl) |
| weak_alias (__nan, nanl) |
| #endif |