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- /* gsl_nan.h
- *
- * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2007 Gerard Jungman, Brian Gough
- *
- * 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, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
- #ifndef __GSL_NAN_H__
- #define __GSL_NAN_H__
- #ifdef INFINITY
- # define GSL_POSINF INFINITY
- # define GSL_NEGINF (-INFINITY)
- #elif defined(HUGE_VAL)
- # define GSL_POSINF HUGE_VAL
- # define GSL_NEGINF (-HUGE_VAL)
- #else
- # define GSL_POSINF (gsl_posinf())
- # define GSL_NEGINF (gsl_neginf())
- #endif
- #ifdef NAN
- # define GSL_NAN NAN
- #elif defined(INFINITY)
- # define GSL_NAN (INFINITY/INFINITY)
- #else
- # define GSL_NAN (gsl_nan())
- #endif
- #define GSL_POSZERO (+0)
- #define GSL_NEGZERO (-0)
- #endif /* __GSL_NAN_H__ */
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