3 * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2007 Reid Priedhorsky, Brian Gough
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.
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.
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.
20 /* roots.h -- declarations for internal root finding and RF support stuff. */
25 /* Call the pointed-to function with argument x, put its result in y, and
26 return an error if the function value is Inf/Nan. */
28 #define SAFE_FUNC_CALL(f, x, yp) \
30 *yp = GSL_FN_EVAL(f,x); \
31 if (!gsl_finite(*yp)) \
32 GSL_ERROR("function value is not finite", GSL_EBADFUNC); \
35 #endif /* __ROOTS_H__ */