1 /* interpolation/accel.c
3 * Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman
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.
24 #include <gsl/gsl_errno.h>
25 #include <gsl/gsl_interp.h>
28 gsl_interp_accel_alloc (void)
30 gsl_interp_accel *a = (gsl_interp_accel *) malloc (sizeof (gsl_interp_accel));
33 GSL_ERROR_NULL("could not allocate space for gsl_interp_accel", GSL_ENOMEM);
44 gsl_interp_accel_reset (gsl_interp_accel * a)
53 #ifndef HIDE_INLINE_STATIC
55 gsl_interp_accel_find (gsl_interp_accel * a, const double xa[], size_t len, double x)
57 size_t x_index = a->cache;
62 a->cache = gsl_interp_bsearch (xa, x, 0, x_index);
64 else if (x > xa[x_index + 1])
67 a->cache = gsl_interp_bsearch (xa, x, x_index, len - 1);
79 gsl_interp_accel_free (gsl_interp_accel * a)