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/*
* Copyright (c) 2000-2001 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 multxpun_1d_C[] = "$Header: /cvsroot/Lorene/C++/Source/Non_class_members/Operators/multxpun_1d.C,v 1.3 2014/10/13 08:53:24 j_novak Exp $" ;
/*
* $Id: multxpun_1d.C,v 1.3 2014/10/13 08:53:24 j_novak Exp $
* $Log: multxpun_1d.C,v $
* Revision 1.3 2014/10/13 08:53:24 j_novak
* Lorene classes and functions now belong to the namespace Lorene.
*
* Revision 1.2 2014/10/06 15:16:06 j_novak
* Modified #include directives to use c++ syntax.
*
* Revision 1.1 2007/12/11 15:42:22 jl_cornou
* Premiere version des fonctions liees aux polynomes de Jacobi(0,2)
*
* Revision 1.2 2002/10/16 14:37:07 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 2000/04/03 17:01:59 phil
* *** empty log message ***
*
*
* $Header: /cvsroot/Lorene/C++/Source/Non_class_members/Operators/multxpun_1d.C,v 1.3 2014/10/13 08:53:24 j_novak Exp $
*
*/
#include <cstdlib>
#include <cmath>
#include "tbl.h"
#include "type_parite.h"
/*
* Operateur :
* -R_JACO02 : (f-f(-1))*(x+1)
*
*
* Entree : coefficients de f dans tb
* nr : nombre de points en r
*
* Sortie : coefficient du resultat dans xo
*
*
*/
//-----------------------------------
// Routine pour les cas non prevus --
//-----------------------------------
namespace Lorene {
void _multxpun_1d_pas_prevu(int nr, double* tb, double *res) {
cout << "multxpun pas prevu..." << endl ;
cout << " valeurs: " << tb << " " << res << endl ;
cout << "nr : " << nr << endl ;
abort () ;
exit(-1) ;
}
//---------------
// cas R_JACO02 -
//---------------
void _multxpun_1d_r_jaco02 (int nr, double* tb, double *xo)
{
xo[nr-1] = 0 ;
for (int i = 1 ; i < nr-1 ; i++) {
xo[i] = i*(i+2)/double((i+1)*(2*i+1))*tb[i-1] + (i*i+3*i+3)/double((i+1)*(i+2))*tb[i] + (i+1)*(i+3)/double((i+2)*(2*i+5))*tb[i+1] ;
}
xo[0] = 1.5*tb[0] + 0.3*tb[1] ;
xo[nr-1] = (nr*nr-1)/double((nr)*(2*nr-1))*tb[nr-2] + (1+1/double((nr)*(nr+1)))*tb[nr-1] ;
}
//----------------------------
// La routine a appeler ----
//----------------------------
void multxpun_1d(int nr, double **tb, int base_r) // Version appliquee a this
{
// Routines de derivation
static void (*multxpun_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++) {
multxpun_1d[i] = _multxpun_1d_pas_prevu ;
}
// Les routines existantes
multxpun_1d[R_JACO02 >> TRA_R] = _multxpun_1d_r_jaco02 ;
}
double *result = new double[nr] ;
multxpun_1d[base_r](nr, *tb, result) ;
delete [] (*tb) ;
(*tb) = result ;
}
}
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