wine/libs/port/isnan.c

47 lines
1.1 KiB
C

/*
* isnan function
*
* Copyright 2008 Jacek Caban for CodeWeavers
*
* This 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.
*
* This 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#ifndef HAVE_ISNAN
#ifdef HAVE_IEEEFP_H
#include <ieeefp.h>
int isnan(double x)
{
return isnand(x);
}
#elif defined(HAVE_FLOAT_H) && defined(HAVE__ISNAN)
#include <float.h>
int isnan(double x)
{
return _isnan(x);
}
#else
#error No isnan() implementation available.
#endif
#endif /* HAVE_ISNAN */