change_var.h

/*
 *  Definition of Lorene class Change_var
 *
 */

/*
 *   Copyright (c) 2003 Philippe Grandclement
 *
 *   This file is part of LORENE.
 *
 *   LORENE is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License version 2
 *   as published by the Free Software Foundation.
 *
 *   LORENE 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 LORENE; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#ifndef __CHANGE_VAR_H_ 
#define __CHANGE_VAR_H_ 

/*
 * $Id: change_var.h,v 1.5 2004/06/22 08:49:56 p_grandclement Exp $
 * $Log: change_var.h,v $
 * Revision 1.5  2004/06/22 08:49:56  p_grandclement
 * Addition of everything needed for using the logarithmic mapping
 *
 * Revision 1.4  2004/05/14 08:51:00  p_grandclement
 * *** empty log message ***
 *
 * Revision 1.3  2004/03/23 14:54:45  j_novak
 * More documentation
 *
 * Revision 1.2  2004/03/05 09:18:48  p_grandclement
 * Addition of operator sec_order_r2
 *
 * Revision 1.1  2003/12/11 14:57:00  p_grandclement
 * I had forgotten the .h (sorry folks...)
 *
 *
 * $Header: /cvsroot/Lorene/C++/Include/change_var.h,v 1.5 2004/06/22 08:49:56 p_grandclement Exp $
 *
 */

#include "proto.h"

// Defines the various types of variable changes with the associated 
// functions F, G, F' and G'

#define STD 1
double one (double) ;
double zero (double) ;

#define W_BETA 2
double ide (double) ;

#define W_BETA_INF 3
double part_ln (double) ;
double part_ln_der (double) ;

#define H_BETA 4

#define LAMBDA_RN 5
double plus_log(double) ;
double moins_sur(double) ;

#define NU_RN 6
double moins_log(double) ;
double plus_sur(double) ;

class Change_var {

 protected:
  double (* func_F) (double) ; 
  double (* der_F) (double) ; 
  double (* func_G) (double) ; 
  double (* der_G) (double) ; 

  double mult_F ; 
  double add_F ; 

 public:

  Change_var (int var) ;

  Change_var (int var, double) ;

  Change_var (int var, double, double) ;
 

  Change_var (const Change_var& so) ; 
  ~Change_var() ; 

 public:
  double val_F (double x) ; 
  double val_der_F (double x) ; 
  double val_G (double x) ; 
  double val_der_G (double x) ; 
} ;

#endif

---