1/* gsl_precision.h
2 *
3 * Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3 of the License, or (at
8 * your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 */
19
20/* Author: B. Gough and G. Jungman */
21
22#ifndef __GSL_PRECISION_H__
23#define __GSL_PRECISION_H__
24#include <gsl/gsl_types.h>
25
26#undef __BEGIN_DECLS
27#undef __END_DECLS
28#ifdef __cplusplus
29# define __BEGIN_DECLS extern "C" {
30# define __END_DECLS }
31#else
32# define __BEGIN_DECLS /* empty */
33# define __END_DECLS /* empty */
34#endif
35
36__BEGIN_DECLS
37
38
39/* A type for the precision indicator.
40 * This is mainly for pedagogy.
41 */
42typedef unsigned int gsl_prec_t;
43
44
45/* The number of precision types.
46 * Remember that precision-mode
47 * can index an array.
48 */
49#define _GSL_PREC_T_NUM 3
50
51
52/* Arrays containing derived
53 * precision constants for the
54 * different precision levels.
55 */
56GSL_VAR const double gsl_prec_eps[];
57GSL_VAR const double gsl_prec_sqrt_eps[];
58GSL_VAR const double gsl_prec_root3_eps[];
59GSL_VAR const double gsl_prec_root4_eps[];
60GSL_VAR const double gsl_prec_root5_eps[];
61GSL_VAR const double gsl_prec_root6_eps[];
62
63
64__END_DECLS
65
66#endif /* __GSL_PRECISION_H__ */
67