mtbl_cf_arithm.C

/*
 * Arithmetical operations for class Mtbl_cf
 *
 */

/*
 *   Copyright (c) 1999-2000 Jean-Alain Marck
 *   Copyright (c) 1999-2001 Eric Gourgoulhon
 *   Copyright (c) 1999-2001 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 as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   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
 *
 */


char mtbl_cf_arithm_C[] = "$Header: /cvsroot/Lorene/C++/Source/Mtbl_cf/mtbl_cf_arithm.C,v 1.2 2002/10/16 14:36:43 j_novak Exp $" ;

/*
 * $Id: mtbl_cf_arithm.C,v 1.2 2002/10/16 14:36:43 j_novak Exp $
 * $Log: mtbl_cf_arithm.C,v $
 * Revision 1.2  2002/10/16 14:36:43  j_novak
 * Reorganization of #include instructions of standard C++, in order to
 * use experimental version 3 of gcc.
 *
 * Revision 1.1.1.1  2001/11/20 15:19:27  e_gourgoulhon
 * LORENE
 *
 * Revision 2.6  2000/09/27  14:25:15  eric
 * Multiplication par un double : on met le resultat a ETATZERO si x == 0.
 *
 * Revision 2.5  2000/08/16  10:43:18  eric
 * Suppression du membre dzpuis.
 *
 * Revision 2.4  1999/10/26  08:09:03  eric
 * Ajout de protection dzpuis dans +=, -=
 *
 * Revision 2.3  1999/10/18  15:07:34  eric
 * La fonction membre annule() est rebaptisee annule_hard().
 *
 * Revision 2.2  1999/10/13  15:50:49  eric
 * *** empty log message ***
 *
 * Revision 2.1  1999/10/01  14:50:14  eric
 * Ajout des operations manquantes.
 *
 * Revision 2.0  1999/06/23  12:36:43  phil
 * *** empty log message ***
 *
 *
 * $Header: /cvsroot/Lorene/C++/Source/Mtbl_cf/mtbl_cf_arithm.C,v 1.2 2002/10/16 14:36:43 j_novak Exp $
 *
 */


// Fichiers include
// ----------------
#include <math.h>
#include <assert.h>
#include <stdlib.h>

#include "mtbl_cf.h"

            //********************//
            // OPERATEURS UNAIRES //
            //********************//

// + Mtbl_cf
// ---------
Mtbl_cf operator+(const Mtbl_cf& t1)        
{
    // Protection
    assert(t1.get_etat() != ETATNONDEF) ;
    
    return t1 ;
}


// - Mtbl_cf
// ---------
Mtbl_cf operator-(const Mtbl_cf& t1)        
{

    // Protection
    assert(t1.get_etat() != ETATNONDEF) ;
    
    // Cas particulier
    if (t1.get_etat() == ETATZERO) {
    return t1 ;
    }
    
    // Cas general
    assert(t1.get_etat() == ETATQCQ) ;  // sinon...
    Mtbl_cf r(t1) ; // Mtbl_cf resultat

    for (int i=0 ; i<r.get_nzone() ; i++) {
    *(r.t)[i] = -(*(t1.t)[i]) ;
    }
    return r ;
}

            //**********//
            // ADDITION //
            //**********//

// Mtbl_cf + Mtbl_cf
// -----------------
Mtbl_cf operator+(const Mtbl_cf& t1, const Mtbl_cf& t2)     
{
    // Protection
    assert(t1.get_etat() != ETATNONDEF) ;
    assert(t2.get_etat() != ETATNONDEF) ;
    assert(t1.get_mg() == t2.get_mg()) ;
    assert(t1.base == t2.base) ;
    
    // Cas particulier
    if (t1.get_etat() == ETATZERO) {
        return t2 ;
    }
    if (t2.get_etat() == ETATZERO) {
        return t1 ;
    }
    assert(t1.get_etat() == ETATQCQ) ;  // sinon...
    assert(t2.get_etat() == ETATQCQ) ;  // sinon...

    // Cas general
    int nz = t1.get_nzone() ;

    Mtbl_cf r(t1) ; // Mtbl resultat

    for (int i=0 ; i<nz ; i++) {
    *(r.t)[i] += *(t2.t)[i] ;
    }

    return r ;
}



            //**************//
            // SOUSTRACTION //
            //**************//

// Mtbl_cf - Mtbl_cf
// -----------------
Mtbl_cf operator-(const Mtbl_cf& t1, const Mtbl_cf& t2)  
{
    // Protection
    assert(t1.get_etat() != ETATNONDEF) ;
    assert(t2.get_etat() != ETATNONDEF) ;
    assert(t1.get_mg() == t2.get_mg()) ;
    assert(t1.base == t2.base) ;
    
    // Cas particulier
    if (t1.get_etat() == ETATZERO) {
        return - t2 ;
    }
    if (t2.get_etat() == ETATZERO) {
        return t1 ;
    }
    assert(t1.get_etat() == ETATQCQ) ;  // sinon...
    assert(t2.get_etat() == ETATQCQ) ;  // sinon...

    // Cas general
    int nz = t1.get_nzone() ;

    Mtbl_cf r(t1) ; // Mtbl_cf resultat

    for (int i=0 ; i<nz ; i++) {
    *(r.t)[i] -= *(t2.t)[i] ;
    }

    return r ;
}


            //****************//
            // MULTIPLICATION //
            //****************//


// Mtbl_cf * double
// ----------------
Mtbl_cf operator*(const Mtbl_cf& t1, double x)      // Mtbl_cf * double
{

    // Protection
    assert(t1.get_etat() != ETATNONDEF) ;

    // Cas particulier
    if ((t1.get_etat() == ETATZERO) || ( x == double(1) )) {
    return t1 ;
    }

    // Cas general
    assert(t1.get_etat() == ETATQCQ) ;  // sinon...

    Mtbl_cf r(t1) ; // Mtbl_cf resultat

    if ( x == double(0) ) {
    r.set_etat_zero() ;
    }
    else{
    int nz = t1.get_nzone() ;
    for (int i=0 ; i<nz ; i++) {
    *(r.t)[i] *= x ;
    }
    }
    
    return r ;
}

// double * Mtbl_cf
// ----------------
Mtbl_cf operator*(double x, const Mtbl_cf& t1)      
{
    return t1 * x ;
}

// Mtbl_cf * int
// -------------
Mtbl_cf operator*(const Mtbl_cf& t1, int m)
{
    return t1 * double(m) ;
}

// int * Mtbl_cf
// -------------
Mtbl_cf operator*(int m, const Mtbl_cf& t1)     
{
    return t1 * double(m) ;
}


            //**********//
            // DIVISION //
            //**********//


// Mtbl_cf / double
// ----------------
Mtbl_cf operator/(const Mtbl_cf& t1, double x)      
{

    // Protection
    assert(t1.get_etat() != ETATNONDEF) ;
    if ( x == double(0) ) {
    cout << "Mtbl_cf division by 0 !" << endl ;
    abort() ;
    }
    
    // Cas particulier
    if ((t1.get_etat() == ETATZERO) || ( x == double(1) )) {
    return t1 ;
    }
    
    // Cas general
    assert(t1.get_etat() == ETATQCQ) ;  // sinon...

    Mtbl_cf r(t1) ; // Mtbl_cf resultat
    int nz = t1.get_nzone() ;
    for (int i=0 ; i<nz ; i++) {
    *(r.t)[i] /= x ;
    }

    return r ;
}

// Mtbl_cf / int
// -------------
Mtbl_cf operator/(const Mtbl_cf& t1, int n)     
{
    return t1/double(n) ;
}



            //*******************//
            // operateurs +=,... //
            //*******************//

void Mtbl_cf::operator+=(const Mtbl_cf & mi) {
    
    // Protection
    assert(mg == mi.get_mg()) ;         // meme grille
    assert(base == mi.base) ;           // meme base
    assert(etat != ETATNONDEF) ;        // etat defini
    assert(mi.get_etat() != ETATNONDEF) ;   // etat defini
    
    // Cas particulier
    if (mi.get_etat() == ETATZERO) {
    return ;
    }
    
    // Cas general

    if (etat == ETATZERO) {
    annule_hard() ;
    }
    for (int i=0 ; i<nzone ; i++) {
    *(t[i]) += *(mi.t[i]) ;
    }
}

void Mtbl_cf::operator-=(const Mtbl_cf & mi) {
    
    // Protection
    assert(mg == mi.get_mg()) ;         // meme grille
    assert(base == mi.base) ;           // meme base
    assert(etat != ETATNONDEF) ;        // etat defini
    assert(mi.get_etat() != ETATNONDEF) ;   // etat defini
    
    // Cas particulier
    if (mi.get_etat() == ETATZERO) {
    return ;
    }
    
    // Cas general

    if (etat == ETATZERO) {
    annule_hard() ;
    }
    for (int i=0 ; i<nzone ; i++) {
    *(t[i]) -= *(mi.t[i]) ;
    }
}

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