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/* histogram/get2d.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 <gsl/gsl_errno.h>
#include <gsl/gsl_histogram2d.h>
#include "find.c"
double
gsl_histogram2d_get (const gsl_histogram2d * h, const size_t i, const size_t j)
{
const size_t nx = h->nx;
const size_t ny = h->ny;
if (i >= nx)
{
GSL_ERROR_VAL ("index i lies outside valid range of 0 .. nx - 1",
GSL_EDOM, 0);
}
if (j >= ny)
{
GSL_ERROR_VAL ("index j lies outside valid range of 0 .. ny - 1",
GSL_EDOM, 0);
}
return h->bin[i * ny + j];
}
int
gsl_histogram2d_get_xrange (const gsl_histogram2d * h, const size_t i,
double *xlower, double *xupper)
{
const size_t nx = h->nx;
if (i >= nx)
{
GSL_ERROR ("index i lies outside valid range of 0 .. nx - 1", GSL_EDOM);
}
*xlower = h->xrange[i];
*xupper = h->xrange[i + 1];
return GSL_SUCCESS;
}
int
gsl_histogram2d_get_yrange (const gsl_histogram2d * h, const size_t j,
double *ylower, double *yupper)
{
const size_t ny = h->ny;
if (j >= ny)
{
GSL_ERROR ("index j lies outside valid range of 0 .. ny - 1", GSL_EDOM);
}
*ylower = h->yrange[j];
*yupper = h->yrange[j + 1];
return GSL_SUCCESS;
}
int
gsl_histogram2d_find (const gsl_histogram2d * h,
const double x, const double y,
size_t * i, size_t * j)
{
int status = find (h->nx, h->xrange, x, i);
if (status)
{
GSL_ERROR ("x not found in range of h", GSL_EDOM);
}
status = find (h->ny, h->yrange, y, j);
if (status)
{
GSL_ERROR ("y not found in range of h", GSL_EDOM);
}
return GSL_SUCCESS;
}
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