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Diffstat (limited to 'gsl-1.9/roots/roots.h')
-rw-r--r-- | gsl-1.9/roots/roots.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/gsl-1.9/roots/roots.h b/gsl-1.9/roots/roots.h new file mode 100644 index 0000000..7b6245e --- /dev/null +++ b/gsl-1.9/roots/roots.h @@ -0,0 +1,37 @@ +/* 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__ */ + + |