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Diffstat (limited to 'gsl-1.9/gsl_nan.h')
| -rw-r--r-- | gsl-1.9/gsl_nan.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/gsl-1.9/gsl_nan.h b/gsl-1.9/gsl_nan.h new file mode 100644 index 0000000..8c5a93f --- /dev/null +++ b/gsl-1.9/gsl_nan.h @@ -0,0 +1,45 @@ +/* gsl_nan.h + * + * Copyright (C) 1996, 1997, 1998, 1999, 2000 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 2 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__ */ |