Revision 7464d0e7083dd9680285c3b17c4e784d584d06eb authored by Software Heritage on 10 October 2014, 00:00:00 UTC, committed by Software Heritage on 15 October 2014, 00:00:00 UTC
0 parent
nan.h
/* NaN manipulation.
Copyright (C) 2010 Pascal Monasse <monasse@imagine.enpc.fr>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef NAN_H
#define NAN_H
#include <math.h>
/// Not a number, only for setting a variable.
static const float NaN=sqrt(-1.0f);
/// Test if \a x is \em not NaN
inline bool is_number(float x) {
return (x==x);
}
#endif
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