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- /* multimin/convergence.c
- *
- * Copyright (C) 1996, 1997, 1998, 1999, 2000 Fabrice Rossi
- *
- * 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 3 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.
- */
- #include "gsl__config.h"
- #include "gsl_multimin.h"
- #include "gsl_blas.h"
- int
- gsl_multimin_test_gradient (const gsl_vector *g, double epsabs)
- {
- double norm;
- if (epsabs < 0.0)
- {
- GSL_ERROR ("absolute tolerance is negative", GSL_EBADTOL);
- }
- norm = gsl_blas_dnrm2(g);
-
- if (norm < epsabs)
- {
- return GSL_SUCCESS;
- }
- return GSL_CONTINUE;
- }
- int
- gsl_multimin_test_size (const double size, double epsabs)
- {
- if (epsabs < 0.0)
- {
- GSL_ERROR ("absolute tolerance is negative", GSL_EBADTOL);
- }
-
- if (size < epsabs)
- {
- return GSL_SUCCESS;
- }
- return GSL_CONTINUE;
- }
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