evolution_full.C

/*
 *  Methods of template class Evolution_full
 *
 *    (see file evolution.h for documentation).
 *
 */

/*
 *   Copyright (c) 2004  Eric Gourgoulhon & Jerome Novak
 *
 *   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
 *
 */

/*
 * $Id: evolution_full.C,v 1.8 2005/01/11 12:46:16 f_limousin Exp $
 * $Log: evolution_full.C,v $
 * Revision 1.8  2005/01/11 12:46:16  f_limousin
 * Implement the function operator=(const Evolution_full<TyT>& ).
 *
 * Revision 1.7  2004/05/31 09:06:12  e_gourgoulhon
 * Added protection against self-assignement in method update.
 *
 * Revision 1.6  2004/03/26 13:31:09  j_novak
 * Definition of the macro UNDEF_STEP for non-defined time-steps.
 * Changes in the way the time derivative is calculated.
 *
 * Revision 1.5  2004/03/26 08:22:13  e_gourgoulhon
 * *** Full reorganization of class Evolution ***
 * Introduction of the notion of absoluteuniversal time steps,
 * stored in the new array 'step'.
 * The new function position(int j) makes a correspondence
 * between a universal time step j and the position in the
 * arrays step, the_time and val.
 * Only method update is now virtual.
 * Methods operator[], position, is_known, downdate belong to
 * the base class.
 *
 * Revision 1.4  2004/03/23 14:50:41  e_gourgoulhon
 * Added methods is_updated, downdate, get_jlast, get_size,
 * as well as constructors without any initial value.
 * Formatted documentation for Doxygen.
 *
 * Revision 1.3  2004/02/17 22:13:34  e_gourgoulhon
 * Suppressed declaration of global char[] evolution_C = ...
 *
 * Revision 1.2  2004/02/16 12:37:01  e_gourgoulhon
 * Method update: initialization of extended part of arrays val and the_time.
 *
 * Revision 1.1  2004/02/15 21:55:33  e_gourgoulhon
 * Introduced derived classes Evolution_full and Evolution_std.
 * Evolution is now an abstract base class.
 *
 *
 *
 * $Header: /cvsroot/Lorene/C++/Include/Template/evolution_full.C,v 1.8 2005/01/11 12:46:16 f_limousin Exp $
 *
 */

// C++ headers
#include "headcpp.h" 

// C headers
#include <stdlib.h>
#include <assert.h>



                    //-------------------------//
                    //      Constructors       //
                    //-------------------------//

                    
template<typename TyT> 
Evolution_full<TyT>::Evolution_full(const TyT& initial_value, int initial_j,
                            double initial_time, int fact_resize_i)
      : Evolution<TyT>(initial_value, initial_j, initial_time, 100), 
        fact_resize(fact_resize_i) 
{ }    
                       
                                        
template<typename TyT> 
Evolution_full<TyT>::Evolution_full(int fact_resize_i)
      : Evolution<TyT>(100), 
        fact_resize(fact_resize_i) 
{ }    
                                        

template<typename TyT> 
Evolution_full<TyT>::Evolution_full(const Evolution_full<TyT>& evo)
      : Evolution<TyT>(evo), 
        fact_resize(evo.fact_resize) 
{ }

                    
                    
                    //-----------------------//
                    //      Destructor       //
                    //-----------------------//

                    
template<typename TyT> 
Evolution_full<TyT>::~Evolution_full(){ }
                    
                    
                    //-----------------------//
                    //      Mutators         //
                    //-----------------------//

                    
template<typename TyT> 
void Evolution_full<TyT>::operator=(const Evolution_full<TyT>& evo) {

    size = evo.size ;
    pos_jtop = evo.pos_jtop ;
 
    for (int j=0; j<size; j++) {
        step[j] = evo.step[j] ; 
    }
    
    for (int j=0; j<size; j++) {
        the_time[j] = evo.the_time[j] ; 
    }
    

    for (int j=0; j<size; j++) {
        if (val[j] != 0x0) {
        delete val[j] ;
        val[j] = 0x0 ;
    }
    }

    for (int j=0; j<size; j++) {
        if (evo.val[j] != 0x0) {        
            val[j] = new TyT( *(evo.val[j]) ) ; 
        }
        else {
            val[j] = 0x0 ; 
        }
    }

    fact_resize = evo.fact_resize ; 
}

template<typename TyT> 
void Evolution_full<TyT>::operator=(const Evolution<TyT>& ) {

    cerr << "void Evolution_full<TyT>::operator= : not implemented yet ! \n" ; 
    abort() ; 

}


                    
template<typename TyT> 
void Evolution_full<TyT>::update(const TyT& new_value, int j, 
                                 double time_j) {

    
    if (is_known(j)) {   // Case of a time step already stored
                         //-----------------------------------
        int pos = position(j) ; 
        assert( fabs(the_time[pos] - time_j) < 1.e-14 ) ;   
        assert( val[pos] != &new_value ) ; // to avoid self assignment
        delete val[pos] ; 
        val[pos] = new TyT(new_value) ; 
    }
    else {              // Storage of a new time step
                        //---------------------------
        if ( (pos_jtop != -1) && (j < step[pos_jtop]) ) {
            cerr << 
                "Evolution_full<TyT>::update : the time step j = "
                << j << " must be in the future\n" 
                << "  of the last stored time step (" <<  step[pos_jtop] << ") !"
                << endl ; 
            abort() ; 
        }
          
        pos_jtop++ ; 
            
        if (pos_jtop == size) {  // re-organization of arrays step, the_time 
                                // and val is necessary
    
            int size_new = fact_resize * size ; 

            int* step_new = new int[size_new] ;
            for (int i=0; i<size; i++) {
                step_new[i] = step[i] ; 
            }
            for (int i=size; i<size_new; i++) {
                step_new[i] = UNDEF_STEP ; 
            }
            
            double* the_time_new = new double[size_new] ;
            for (int i=0; i<size; i++) {
                the_time_new[i] = the_time[i] ; 
            }
            for (int i=size; i<size_new; i++) {
                the_time_new[i] = -1e20 ; 
            }
            
            TyT** val_new = new TyT*[size_new] ; 
            for (int i=0; i<size; i++) {
                val_new[i] = val[i] ; 
            }
            for (int i=size; i<size_new; i++) {
                val_new[i] = 0x0 ; 
            }
            
            size = size_new ;
            delete [] step ; 
            step = step_new ;  
            delete [] the_time ; 
            the_time = the_time_new ; 
            delete [] val ; 
            val = val_new ;  
            
        }
        else {
            assert( pos_jtop < size ) ; 
            assert( val[pos_jtop] == 0x0 ) ; 
        }
    
        step[pos_jtop] = j ;
        the_time[pos_jtop] = time_j ; 
        val[pos_jtop] = new TyT( new_value ) ; 
    }
}                   
                    

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