/* histogram/gsl_histogram.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_HISTOGRAM_H__

#define __GSL_HISTOGRAM_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 n ;

  double * range ;

  double * bin ;

} gsl_histogram ;

typedef struct {

  size_t n ;

  double * range ;

  double * sum ;

} gsl_histogram_pdf ;

gsl_histogram * gsl_histogram_alloc (size_t n);

gsl_histogram * gsl_histogram_calloc (size_t n);

gsl_histogram * gsl_histogram_calloc_uniform (const size_t n, const double xmin, const double xmax);

void gsl_histogram_free (gsl_histogram * h);

int gsl_histogram_increment (gsl_histogram * h, double x);

int gsl_histogram_accumulate (gsl_histogram * h, double x, double weight);

int gsl_histogram_find (const gsl_histogram * h, 

                        const double x, size_t * i);

double gsl_histogram_get (const gsl_histogram * h, size_t i);

int gsl_histogram_get_range (const gsl_histogram * h, size_t i, 

                             double * lower, double * upper);

double gsl_histogram_max (const gsl_histogram * h);

double gsl_histogram_min (const gsl_histogram * h);

size_t gsl_histogram_bins (const gsl_histogram * h);

void gsl_histogram_reset (gsl_histogram * h);

gsl_histogram * gsl_histogram_calloc_range(size_t n, double * range);

int 

gsl_histogram_set_ranges (gsl_histogram * h, const double range[], size_t size);

int 

gsl_histogram_set_ranges_uniform (gsl_histogram * h, double xmin, double xmax);

int

gsl_histogram_memcpy(gsl_histogram * dest, const gsl_histogram * source);

gsl_histogram *

gsl_histogram_clone(const gsl_histogram * source);

double gsl_histogram_max_val (const gsl_histogram * h);

size_t gsl_histogram_max_bin (const gsl_histogram * h);

double gsl_histogram_min_val (const gsl_histogram * h);

size_t gsl_histogram_min_bin (const gsl_histogram * h);

int 

gsl_histogram_equal_bins_p(const gsl_histogram *h1, const gsl_histogram *h2);

int 

gsl_histogram_add(gsl_histogram *h1, const gsl_histogram *h2);

int 

gsl_histogram_sub(gsl_histogram *h1, const gsl_histogram *h2);

int 

gsl_histogram_mul(gsl_histogram *h1, const gsl_histogram *h2);

int 

gsl_histogram_div(gsl_histogram *h1, const gsl_histogram *h2);

int 

gsl_histogram_scale(gsl_histogram *h, double scale);

int 

gsl_histogram_shift (gsl_histogram * h, double shift);

double gsl_histogram_sigma (const gsl_histogram * h);

double gsl_histogram_mean (const gsl_histogram * h);

double gsl_histogram_sum (const gsl_histogram * h);

int gsl_histogram_fwrite (FILE * stream, const gsl_histogram * h) ;

int gsl_histogram_fread (FILE * stream, gsl_histogram * h);

int gsl_histogram_fprintf (FILE * stream, const gsl_histogram * h, 

                           const char * range_format, const char * bin_format);

int gsl_histogram_fscanf (FILE * stream, gsl_histogram * h);

gsl_histogram_pdf * gsl_histogram_pdf_alloc (const size_t n);

int gsl_histogram_pdf_init (gsl_histogram_pdf * p, const gsl_histogram * h);

void gsl_histogram_pdf_free (gsl_histogram_pdf * p);

double gsl_histogram_pdf_sample (const gsl_histogram_pdf * p, double r);

__END_DECLS

#endif /* __GSL_HISTOGRAM_H__ */