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/*
* Method of class Scalar to check if a Poisson equation has been correctly
* solved.
*
* (see file cmp.h for documentation)
*
*/
/*
* Copyright (c) 2003 Eric Gourgoulhon & Jerome Novak
*
* Copyright (c) 2000-2001 Eric Gourgoulhon (for a preceding Cmp version)
*
* 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 scalar_test_poisson_C[] = "$Header: /cvsroot/Lorene/C++/Source/Tensor/Scalar/scalar_test_poisson.C,v 1.4 2014/10/13 08:53:47 j_novak Exp $" ;
/*
* $Id: scalar_test_poisson.C,v 1.4 2014/10/13 08:53:47 j_novak Exp $
* $Log: scalar_test_poisson.C,v $
* Revision 1.4 2014/10/13 08:53:47 j_novak
* Lorene classes and functions now belong to the namespace Lorene.
*
* Revision 1.3 2003/10/29 13:14:29 e_gourgoulhon
* Change of method name: laplacien --> laplacian.
*
* Revision 1.2 2003/10/01 13:04:44 e_gourgoulhon
* The method Tensor::get_mp() returns now a reference (and not
* a pointer) onto a mapping.
*
* Revision 1.1 2003/09/25 09:13:11 e_gourgoulhon
* First version.
*
*
* $Header: /cvsroot/Lorene/C++/Source/Tensor/Scalar/scalar_test_poisson.C,v 1.4 2014/10/13 08:53:47 j_novak Exp $
*
*/
// Headers Lorene
#include "tensor.h"
namespace Lorene {
Tbl Scalar::test_poisson(const Scalar& uu, ostream& ostr, bool detail) const {
assert( &(uu.get_mp()) == mp ) ;
// Computation of the absolute and relative errors
// -----------------------------------------------
int dzi ;
if ( check_dzpuis(4) ) {
dzi = 4 ;
}
else{
if ( check_dzpuis(2) ) {
dzi = 2 ;
}
else{
assert( check_dzpuis(0) ) ;
dzi = 0 ;
}
}
Tbl tdiff = max( abs( uu.laplacian(dzi) - *this ) ) ;
Tbl tmax = max( abs(*this) ) ;
int nz = mp->get_mg()->get_nzone() ;
int nzm1 = nz - 1 ;
Tbl trel(nz) ;
trel.set_etat_qcq() ;
if ( (dzpuis == 0) || (tmax(nzm1) == double(0)) ) {
double s_max = max( tmax ) ;
for (int l=0; l<nz; l++) {
trel.set(l) = tdiff(l) / s_max ;
}
}
else{
double s_max = 0 ;
for (int l=0; l<nzm1; l++) {
s_max = (tmax(l) > s_max) ? tmax(l) : s_max ;
}
for (int l=0; l<nzm1; l++) {
trel.set(l) = tdiff(l) / s_max ;
}
trel.set(nzm1) = tdiff(nzm1) / tmax(nzm1) ;
}
// All the errors are set in the same output 2-D Tbl
// -------------------------------------------------
Tbl err(3, nz) ;
err.set_etat_qcq() ;
for(int l=0; l<nz; l++) {
err.set(0, l) = trel(l) ;
err.set(1, l) = tdiff(l) ;
err.set(2, l) = tmax(l) ;
}
// Display
// -------
if (detail) {
ostr << "Max. source :" ;
for (int l=0; l<nz; l++) {
ostr << " " << err(2, l) ;
}
ostr << endl << "Abs. error : " ;
for (int l=0; l<nz; l++) {
ostr << " " << err(1, l) ;
}
}
ostr << endl << "Rel. error : " ;
for (int l=0; l<nz; l++) {
ostr << " " << err(0, l) ;
}
ostr << endl ;
return err ;
}
}
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