/* roots/gsl_roots.h

 * 

 * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2007 Reid Priedhorsky, 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_ROOTS_H__

#define __GSL_ROOTS_H__

#include <stdlib.h>

#include <gsl/gsl_types.h>

#include <gsl/gsl_math.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

  {

    const char *name;

    size_t size;

    int (*set) (void *state, gsl_function * f, double * root, double x_lower, double x_upper);

    int (*iterate) (void *state, gsl_function * f, double * root, double * x_lower, double * x_upper);

  }

gsl_root_fsolver_type;

typedef struct

  {

    const gsl_root_fsolver_type * type;

    gsl_function * function ;

    double root ;

    double x_lower;

    double x_upper;

    void *state;

  }

gsl_root_fsolver;

typedef struct

  {

    const char *name;

    size_t size;

    int (*set) (void *state, gsl_function_fdf * f, double * root);

    int (*iterate) (void *state, gsl_function_fdf * f, double * root);

  }

gsl_root_fdfsolver_type;

typedef struct

  {

    const gsl_root_fdfsolver_type * type;

    gsl_function_fdf * fdf ;

    double root ;

    void *state;

  }

gsl_root_fdfsolver;

gsl_root_fsolver *

gsl_root_fsolver_alloc (const gsl_root_fsolver_type * T);

void gsl_root_fsolver_free (gsl_root_fsolver * s);

int gsl_root_fsolver_set (gsl_root_fsolver * s,

                          gsl_function * f, 

                          double x_lower, double x_upper);

int gsl_root_fsolver_iterate (gsl_root_fsolver * s);

const char * gsl_root_fsolver_name (const gsl_root_fsolver * s);

double gsl_root_fsolver_root (const gsl_root_fsolver * s);

double gsl_root_fsolver_x_lower (const gsl_root_fsolver * s);

double gsl_root_fsolver_x_upper (const gsl_root_fsolver * s);

gsl_root_fdfsolver *

gsl_root_fdfsolver_alloc (const gsl_root_fdfsolver_type * T);

int

gsl_root_fdfsolver_set (gsl_root_fdfsolver * s, 

                         gsl_function_fdf * fdf, double root);

int

gsl_root_fdfsolver_iterate (gsl_root_fdfsolver * s);

void

gsl_root_fdfsolver_free (gsl_root_fdfsolver * s);

const char * gsl_root_fdfsolver_name (const gsl_root_fdfsolver * s);

double gsl_root_fdfsolver_root (const gsl_root_fdfsolver * s);

int

gsl_root_test_interval (double x_lower, double x_upper, double epsabs, double epsrel);

int

gsl_root_test_residual (double f, double epsabs);

int

gsl_root_test_delta (double x1, double x0, double epsabs, double epsrel);

GSL_VAR const gsl_root_fsolver_type  * gsl_root_fsolver_bisection;

GSL_VAR const gsl_root_fsolver_type  * gsl_root_fsolver_brent;

GSL_VAR const gsl_root_fsolver_type  * gsl_root_fsolver_falsepos;

GSL_VAR const gsl_root_fdfsolver_type  * gsl_root_fdfsolver_newton;

GSL_VAR const gsl_root_fdfsolver_type  * gsl_root_fdfsolver_secant;

GSL_VAR const gsl_root_fdfsolver_type  * gsl_root_fdfsolver_steffenson;

__END_DECLS

#endif /* __GSL_ROOTS_H__ */