| /* wavelet/wavelet.c |
| * |
| * Copyright (C) 2004 Ivo Alxneit |
| * |
| * 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. |
| */ |
| |
| #include <config.h> |
| #include <stdlib.h> |
| #include <gsl/gsl_errno.h> |
| #include <gsl/gsl_wavelet.h> |
| |
| gsl_wavelet * |
| gsl_wavelet_alloc (const gsl_wavelet_type * T, size_t k) |
| { |
| int status; |
| |
| gsl_wavelet *w = (gsl_wavelet *) malloc (sizeof (gsl_wavelet)); |
| |
| if (w == NULL) |
| { |
| GSL_ERROR_VAL ("failed to allocate space for wavelet struct", |
| GSL_ENOMEM, 0); |
| }; |
| |
| w->type = T; |
| |
| status = (T->init) (&(w->h1), &(w->g1), &(w->h2), &(w->g2), |
| &(w->nc), &(w->offset), k); |
| |
| if (status) |
| { |
| free (w); |
| GSL_ERROR_VAL ("invalid wavelet member", GSL_EINVAL, 0); |
| } |
| |
| return w; |
| } |
| |
| void |
| gsl_wavelet_free (gsl_wavelet * w) |
| { |
| free (w); |
| } |
| |
| const char * |
| gsl_wavelet_name (const gsl_wavelet * w) |
| { |
| return w->type->name; |
| } |
| |
| |
| /* Let's not export this for now (BJG) */ |
| #if 0 |
| void |
| gsl_wavelet_print (const gsl_wavelet * w) |
| { |
| size_t n = w->nc; |
| size_t i; |
| |
| printf ("Wavelet type: %s\n", w->type->name); |
| |
| printf |
| (" h1(%d):%12.8f g1(%d):%12.8f h2(%d):%12.8f g2(%d):%12.8f\n", |
| 0, w->h1[0], 0, w->g1[0], 0, w->h2[0], 0, w->g2[0]); |
| |
| for (i = 1; i < (n < 10 ? n : 10); i++) |
| { |
| printf |
| (" h1(%d):%12.8f g1(%d):%12.8f h2(%d):%12.8f g2(%d):%12.8f\n", |
| i, w->h1[i], i, w->g1[i], i, w->h2[i], i, w->g2[i]); |
| } |
| |
| for (; i < n; i++) |
| { |
| printf |
| ("h1(%d):%12.8f g1(%d):%12.8f h2(%d):%12.8f g2(%d):%12.8f\n", |
| i, w->h1[i], i, w->g1[i], i, w->h2[i], i, w->g2[i]); |
| } |
| } |
| #endif |
| |
| gsl_wavelet_workspace * |
| gsl_wavelet_workspace_alloc (size_t n) |
| { |
| gsl_wavelet_workspace *work; |
| |
| if (n == 0) |
| { |
| GSL_ERROR_VAL ("length n must be positive integer", GSL_EDOM, 0); |
| } |
| |
| work = (gsl_wavelet_workspace *) malloc (sizeof (gsl_wavelet_workspace)); |
| |
| if (work == NULL) |
| { |
| GSL_ERROR_VAL ("failed to allocate struct", GSL_ENOMEM, 0); |
| } |
| |
| work->n = n; |
| work->scratch = (double *) malloc (n * sizeof (double)); |
| |
| if (work->scratch == NULL) |
| { |
| /* error in constructor, prevent memory leak */ |
| free (work); |
| GSL_ERROR_VAL ("failed to allocate scratch space", GSL_ENOMEM, 0); |
| } |
| |
| return work; |
| } |
| |
| void |
| gsl_wavelet_workspace_free (gsl_wavelet_workspace * work) |
| { |
| /* release scratch space */ |
| free (work->scratch); |
| work->scratch = NULL; |
| free (work); |
| } |