/* histogram/gsl_histogram2d.h

 * 

 * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2007 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 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.

 */

#ifndef __GSL_HISTOGRAM2D_H__

#define __GSL_HISTOGRAM2D_H__

#include <stdlib.h>

#include <stdio.h>

#undef __BEGIN_DECLS

#undef __END_DECLS

#ifdef __cplusplus

# define __BEGIN_DECLS extern "C" {

# define __END_DECLS }

#else

# define __BEGIN_DECLS /* empty */

# define __END_DECLS /* empty */

#endif

__BEGIN_DECLS

typedef struct {

  size_t nx, ny ;

  double * xrange ;

  double * yrange ;

  double * bin ;

} gsl_histogram2d ;

typedef struct {

  size_t nx, ny ;

  double * xrange ;

  double * yrange ;

  double * sum ;

} gsl_histogram2d_pdf ;

gsl_histogram2d * gsl_histogram2d_alloc (const size_t nx, const size_t ny);

gsl_histogram2d * gsl_histogram2d_calloc (const size_t nx, const size_t ny);

gsl_histogram2d * gsl_histogram2d_calloc_uniform (const size_t nx, const size_t ny,

                                             const double xmin, const double xmax,

                                             const double ymin, const double ymax);

void gsl_histogram2d_free (gsl_histogram2d * h);

int gsl_histogram2d_increment (gsl_histogram2d * h, double x, double y);

int gsl_histogram2d_accumulate (gsl_histogram2d * h, 

                                double x, double y, double weight);

int gsl_histogram2d_find (const gsl_histogram2d * h, 

                          const double x, const double y, size_t * i, size_t * j);

double gsl_histogram2d_get (const gsl_histogram2d * h, const size_t i, const size_t j);

int gsl_histogram2d_get_xrange (const gsl_histogram2d * h, const size_t i,

                                double * xlower, double * xupper);

int gsl_histogram2d_get_yrange (const gsl_histogram2d * h, const size_t j,

                                double * ylower, double * yupper);

double gsl_histogram2d_xmax (const gsl_histogram2d * h);

double gsl_histogram2d_xmin (const gsl_histogram2d * h);

size_t gsl_histogram2d_nx (const gsl_histogram2d * h);

double gsl_histogram2d_ymax (const gsl_histogram2d * h);

double gsl_histogram2d_ymin (const gsl_histogram2d * h);

size_t gsl_histogram2d_ny (const gsl_histogram2d * h);

void gsl_histogram2d_reset (gsl_histogram2d * h);

gsl_histogram2d * 

gsl_histogram2d_calloc_range(size_t nx, size_t ny, 

                             double *xrange, double *yrange);

int 

gsl_histogram2d_set_ranges_uniform (gsl_histogram2d * h, 

                                    double xmin, double xmax,

                                    double ymin, double ymax);

int 

gsl_histogram2d_set_ranges (gsl_histogram2d * h, 

                            const double xrange[], size_t xsize,

                            const double yrange[], size_t ysize);

int 

gsl_histogram2d_memcpy(gsl_histogram2d *dest, const gsl_histogram2d *source);

gsl_histogram2d *

gsl_histogram2d_clone(const gsl_histogram2d * source);

double

gsl_histogram2d_max_val(const gsl_histogram2d *h);

void

gsl_histogram2d_max_bin (const gsl_histogram2d *h, size_t *i, size_t *j);

double

gsl_histogram2d_min_val(const gsl_histogram2d *h);

void

gsl_histogram2d_min_bin (const gsl_histogram2d *h, size_t *i, size_t *j);

double

gsl_histogram2d_xmean (const gsl_histogram2d * h);

double

gsl_histogram2d_ymean (const gsl_histogram2d * h);

double

gsl_histogram2d_xsigma (const gsl_histogram2d * h);

double

gsl_histogram2d_ysigma (const gsl_histogram2d * h);

double

gsl_histogram2d_cov (const gsl_histogram2d * h);

double

gsl_histogram2d_sum (const gsl_histogram2d *h);

int 

gsl_histogram2d_equal_bins_p(const gsl_histogram2d *h1,

                             const gsl_histogram2d *h2) ;

int

gsl_histogram2d_add(gsl_histogram2d *h1, const gsl_histogram2d *h2);

int

gsl_histogram2d_sub(gsl_histogram2d *h1, const gsl_histogram2d *h2);

int

gsl_histogram2d_mul(gsl_histogram2d *h1, const gsl_histogram2d *h2);

int

gsl_histogram2d_div(gsl_histogram2d *h1, const gsl_histogram2d *h2);

int

gsl_histogram2d_scale(gsl_histogram2d *h, double scale);

int

gsl_histogram2d_shift(gsl_histogram2d *h, double shift);

int gsl_histogram2d_fwrite (FILE * stream, const gsl_histogram2d * h) ;

int gsl_histogram2d_fread (FILE * stream, gsl_histogram2d * h);

int gsl_histogram2d_fprintf (FILE * stream, const gsl_histogram2d * h, 

                             const char * range_format,

                             const char * bin_format);

int gsl_histogram2d_fscanf (FILE * stream, gsl_histogram2d * h);

gsl_histogram2d_pdf * gsl_histogram2d_pdf_alloc (const size_t nx, const size_t ny);

int gsl_histogram2d_pdf_init (gsl_histogram2d_pdf * p, const gsl_histogram2d * h);

void gsl_histogram2d_pdf_free (gsl_histogram2d_pdf * p);

int gsl_histogram2d_pdf_sample (const gsl_histogram2d_pdf * p, 

                                   double r1, double r2, 

                                   double * x, double * y);

__END_DECLS

#endif /* __GSL_HISTOGRAM2D_H__ */