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/* 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__ */
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