math/s_nan.c


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/* 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