| /* histogram/add2d.c |
| * |
| * Copyright (C) 1996, 1997, 1998, 1999, 2000 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. |
| */ |
| |
| #include <config.h> |
| #include <stdlib.h> |
| #include <gsl/gsl_errno.h> |
| #include <gsl/gsl_histogram.h> |
| #include <gsl/gsl_histogram2d.h> |
| |
| #include "find2d.c" |
| |
| int |
| gsl_histogram2d_increment (gsl_histogram2d * h, double x, double y) |
| { |
| int status = gsl_histogram2d_accumulate (h, x, y, 1.0); |
| return status; |
| } |
| |
| int |
| gsl_histogram2d_accumulate (gsl_histogram2d * h, |
| double x, double y, double weight) |
| { |
| const size_t nx = h->nx; |
| const size_t ny = h->ny; |
| |
| size_t i = 0, j = 0; |
| |
| int status = find2d (h->nx, h->xrange, h->ny, h->yrange, x, y, &i, &j); |
| |
| if (status) |
| { |
| return GSL_EDOM; |
| } |
| |
| if (i >= nx) |
| { |
| GSL_ERROR ("index lies outside valid range of 0 .. nx - 1", |
| GSL_ESANITY); |
| } |
| |
| if (j >= ny) |
| { |
| GSL_ERROR ("index lies outside valid range of 0 .. ny - 1", |
| GSL_ESANITY); |
| } |
| |
| h->bin[i * ny + j] += weight; |
| |
| return GSL_SUCCESS; |
| } |