include/gsl/gsl_precision.h

0001 /* gsl_precision.h
0002  *
0003  * Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman
0004  *
0005  * This program is free software; you can redistribute it and/or modify
0006  * it under the terms of the GNU General Public License as published by
0007  * the Free Software Foundation; either version 3 of the License, or (at
0008  * your option) any later version.
0009  *
0010  * This program is distributed in the hope that it will be useful, but
0011  * WITHOUT ANY WARRANTY; without even the implied warranty of
0012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
0013  * General Public License for more details.
0014  *
0015  * You should have received a copy of the GNU General Public License
0016  * along with this program; if not, write to the Free Software
0017  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
0018  */
0019
0020 /* Author:  B. Gough and G. Jungman */
0021
0022 #ifndef __GSL_PRECISION_H__
0023 #define __GSL_PRECISION_H__
0024 #include <gsl/gsl_types.h>
0025
0026 #undef __BEGIN_DECLS
0027 #undef __END_DECLS
0028 #ifdef __cplusplus
0029 # define __BEGIN_DECLS extern "C" {
0030 # define __END_DECLS }
0031 #else
0032 # define __BEGIN_DECLS /* empty */
0033 # define __END_DECLS /* empty */
0034 #endif
0035
0036 __BEGIN_DECLS
0037
0038
0039 /* A type for the precision indicator.
0040  * This is mainly for pedagogy.
0041  */
0042 typedef  unsigned int  gsl_prec_t;
0043
0044
0045 /* The number of precision types.
0046  * Remember that precision-mode
0047  * can index an array.
0048  */
0049 #define _GSL_PREC_T_NUM 3
0050
0051
0052 /* Arrays containing derived
0053  * precision constants for the
0054  * different precision levels.
0055  */
0056 GSL_VAR const double gsl_prec_eps[];
0057 GSL_VAR const double gsl_prec_sqrt_eps[];
0058 GSL_VAR const double gsl_prec_root3_eps[];
0059 GSL_VAR const double gsl_prec_root4_eps[];
0060 GSL_VAR const double gsl_prec_root5_eps[];
0061 GSL_VAR const double gsl_prec_root6_eps[];
0062
0063
0064 __END_DECLS
0065
0066 #endif /* __GSL_PRECISION_H__ */