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/*
* 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 xdsdx_1d_C[] = "$Header: /cvsroot/Lorene/C++/Source/Non_class_members/Operators/xdsdx_1d.C,v 1.4 2014/10/13 08:53:27 j_novak Exp $" ;
/*
* $Id: xdsdx_1d.C,v 1.4 2014/10/13 08:53:27 j_novak Exp $
* $Log: xdsdx_1d.C,v $
* Revision 1.4 2014/10/13 08:53:27 j_novak
* Lorene classes and functions now belong to the namespace Lorene.
*
* Revision 1.3 2014/10/06 15:16:07 j_novak
* Modified #include directives to use c++ syntax.
*
* Revision 1.2 2002/10/16 14:37:11 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 15:19:29 e_gourgoulhon
* LORENE
*
* Revision 2.0 1999/10/11 09:55:46 phil
* *** empty log message ***
*
*
* $Header: /cvsroot/Lorene/C++/Source/Non_class_members/Operators/xdsdx_1d.C,v 1.4 2014/10/13 08:53:27 j_novak Exp $
*
*/
// Includes
#include <cstdlib>
#include "headcpp.h"
#include "type_parite.h"
//----------------------------------
// Routine pour les cas non prevus --
//----------------------------------
namespace Lorene {
void _xdsdx_1d_pas_prevu(int nr, double* tb, double *xo) {
cout << "xdsdx pas prevu..." << endl ;
cout << "Nombre de points : " << nr << endl ;
cout << "Valeurs : " << tb << " " << xo <<endl ;
abort() ;
exit(-1) ;
}
//---------------
// cas R_CHEB ---
//---------------
void _xdsdx_1d_r_cheb(int nr, double* tb, double *xo) {
double somme = 0 ;
//Premiere boucle sur r :
for (int i=nr-1 ; i>= 0 ; i-=2) {
if (i==nr-1)
somme += i*tb[i] ;
else somme += i*tb[i]+(i+2)*tb[i+2] ;
xo[i] = somme ;
}
//Seconde boucle sur r :
somme = 0 ;
for (int i=nr-2 ; i>=0 ; i-=2) {
if (i==nr-2)
somme += i*tb[i] ;
else
somme += i*tb[i]+(i+2)*tb[i+2] ;
xo[i] = somme ;
}
xo[0] *= .5 ;
}
//-----------------
// cas R_CHEBP ---
//----------------
void _xdsdx_1d_r_chebp(int nr, double* tb, double *xo) {
double somme = 0 ;
for (int i=nr-1 ; i>=0 ; i--) {
if (i==nr-1)
somme += (2*i)*tb[i] ;
else
somme += (2*i)*tb[i]+(2*i+2)*tb[i+1] ;
xo[i] = somme ;
}
xo[0] *= .5 ;
}
//---------------
// cas R_CHEBI --
//---------------
void _xdsdx_1d_r_chebi(int nr, double* tb, double *xo) {
double somme = 0 ;
for (int i=nr-1 ; i>=0 ; i--) {
if (i==nr-1)
somme += (2*i+1)*tb[i] ;
else
somme += (2*i+1)*tb[i]+(2*i+3)*tb[i+1] ;
xo[i] = somme ;
}
}
// ---------------------
// La routine a appeler
//----------------------
void xdsdx_1d(int nr, double** tb, int base_r)
{
// Routines de derivation
static void (*xdsdx_1d[MAX_BASE])(int, double*, double *) ;
static int nap = 0 ;
// Premier appel
if (nap==0) {
nap = 1 ;
for (int i=0 ; i<MAX_BASE ; i++) {
xdsdx_1d[i] = _xdsdx_1d_pas_prevu ;
}
// Les routines existantes
xdsdx_1d[R_CHEB >> TRA_R] = _xdsdx_1d_r_cheb ;
xdsdx_1d[R_CHEBP >> TRA_R] = _xdsdx_1d_r_chebp ;
xdsdx_1d[R_CHEBI >> TRA_R] = _xdsdx_1d_r_chebi ;
}
double *result = new double[nr] ;
xdsdx_1d[base_r](nr, *tb, result) ;
delete [] (*tb) ;
(*tb) = result ;
}
}
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