| /* roots/roots.h |
| * |
| * Copyright (C) 1996, 1997, 1998, 1999, 2000 Reid Priedhorsky, 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. |
| */ |
| |
| /* roots.h -- declarations for internal root finding and RF support stuff. */ |
| |
| #ifndef __ROOTS_H__ |
| #define __ROOTS_H__ |
| |
| /* Call the pointed-to function with argument x, put its result in y, and |
| return an error if the function value is Inf/Nan. */ |
| |
| #define SAFE_FUNC_CALL(f, x, yp) \ |
| do { \ |
| *yp = GSL_FN_EVAL(f,x); \ |
| if (!finite(*yp)) \ |
| GSL_ERROR("function value is not finite", GSL_EBADFUNC); \ |
| } while (0) |
| |
| #endif /* __ROOTS_H__ */ |
| |
| |
