| /* gsl_mode.h |
| * |
| * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2004 Gerard Jungman |
| * |
| * 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. |
| */ |
| |
| /* Author: B. Gough and G. Jungman */ |
| |
| #ifndef __GSL_MODE_H__ |
| #define __GSL_MODE_H__ |
| |
| #undef __BEGIN_DECLS |
| #undef __END_DECLS |
| #ifdef __cplusplus |
| # define __BEGIN_DECLS extern "C" { |
| # define __END_DECLS } |
| #else |
| # define __BEGIN_DECLS /* empty */ |
| # define __END_DECLS /* empty */ |
| #endif |
| |
| __BEGIN_DECLS |
| |
| |
| /* Some functions can take a mode argument. This |
| * is a rough method to do things like control |
| * the precision of the algorithm. This mainly |
| * occurs in special functions, but we figured |
| * it was ok to have a general facility. |
| * |
| * The mode type is 32-bit field. Most of |
| * the fields are currently unused. Users |
| * '|' various predefined constants to get |
| * a desired mode. |
| */ |
| typedef unsigned int gsl_mode_t; |
| |
| |
| /* Here are the predefined constants. |
| * Note that the precision constants |
| * are special because they are used |
| * to index arrays, so do not change |
| * them. The precision information is |
| * in the low order 3 bits of gsl_mode_t |
| * (the third bit is currently unused). |
| */ |
| |
| /* Note that "0" is double precision, |
| * so that you get that by default if |
| * you forget a flag. |
| */ |
| #define GSL_PREC_DOUBLE 0 |
| #define GSL_PREC_SINGLE 1 |
| #define GSL_PREC_APPROX 2 |
| |
| #ifdef HAVE_INLINE |
| extern inline unsigned int GSL_MODE_PREC(gsl_mode_t mt); |
| |
| extern inline unsigned int |
| GSL_MODE_PREC(gsl_mode_t mt) |
| { return (mt & (unsigned int)7); } |
| #else /* HAVE_INLINE */ |
| #define GSL_MODE_PREC(mt) ((mt) & (unsigned int)7) |
| #endif /* HAVE_INLINE */ |
| |
| |
| /* Here are some predefined generic modes. |
| */ |
| #define GSL_MODE_DEFAULT 0 |
| |
| |
| __END_DECLS |
| |
| #endif /* __GSL_MODE_H__ */ |
