/* interpolation/gsl_spline.h

 * 

 * Copyright (C) 2001, 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_SPLINE_H__

#define __GSL_SPLINE_H__

#include <stdlib.h>

#include <gsl/gsl_interp.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

/* general interpolation object */

typedef struct {

  gsl_interp * interp;

  double  * x;

  double  * y;

  size_t  size;

} gsl_spline;

gsl_spline *

gsl_spline_alloc(const gsl_interp_type * T, size_t size);

int

gsl_spline_init(gsl_spline * spline, const double xa[], const double ya[], size_t size);

const char * gsl_spline_name(const gsl_spline * spline);

unsigned int gsl_spline_min_size(const gsl_spline * spline);

int

gsl_spline_eval_e(const gsl_spline * spline, double x,

                  gsl_interp_accel * a, double * y);

double

gsl_spline_eval(const gsl_spline * spline, double x, gsl_interp_accel * a);

int

gsl_spline_eval_deriv_e(const gsl_spline * spline,

                        double x,

                        gsl_interp_accel * a,

                        double * y);

double

gsl_spline_eval_deriv(const gsl_spline * spline,

                      double x,

                      gsl_interp_accel * a);

int

gsl_spline_eval_deriv2_e(const gsl_spline * spline,

                         double x,

                         gsl_interp_accel * a,

                         double * y);

double

gsl_spline_eval_deriv2(const gsl_spline * spline,

                       double x,

                       gsl_interp_accel * a);

int

gsl_spline_eval_integ_e(const gsl_spline * spline,

                        double a, double b,

                        gsl_interp_accel * acc,

                        double * y);

double

gsl_spline_eval_integ(const gsl_spline * spline,

                      double a, double b,

                      gsl_interp_accel * acc);

void

gsl_spline_free(gsl_spline * spline);

__END_DECLS

#endif /* __GSL_INTERP_H__ */