/* * 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 */