/* histogram/ntuple.h

 * 

 * Copyright (C) 2000 Simone Piccardi

 * 

 * 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.

 *

 */

/* Jan/2001 Modified by Brian Gough. Minor changes for GSL */

#ifndef __GSL_NTUPLE_H__

#define __GSL_NTUPLE_H__

#include <stdlib.h>

#include <stdio.h>

#include <gsl/gsl_errno.h>

#include <gsl/gsl_histogram.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 {

    FILE * file;

    void * ntuple_data;

    size_t size;

} gsl_ntuple;

typedef struct {

  int (* function) (void * ntuple_data, void * params);

  void * params;

} gsl_ntuple_select_fn;

typedef struct {

  double (* function) (void * ntuple_data, void * params);

  void * params;

} gsl_ntuple_value_fn;

gsl_ntuple * 

gsl_ntuple_open (char * filename, void * ntuple_data, size_t size);

gsl_ntuple * 

gsl_ntuple_create (char * filename, void * ntuple_data, size_t size);

int gsl_ntuple_write (gsl_ntuple * ntuple);

int gsl_ntuple_read (gsl_ntuple * ntuple);

int gsl_ntuple_bookdata (gsl_ntuple * ntuple);  /* synonym for write */

int gsl_ntuple_project (gsl_histogram * h, gsl_ntuple * ntuple, 

                        gsl_ntuple_value_fn *value_func,

                        gsl_ntuple_select_fn *select_func);

int gsl_ntuple_close (gsl_ntuple * ntuple);

__END_DECLS

#endif /* __GSL_NTUPLE_H__ */