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/*
* Performs a 2D integration from 0 to infty of the l=0 part of a Scalar
*
*/
/*
* Copyright (c) 2010 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
*
*/
char integrale2d_C[] = "$Header: /cvsroot/Lorene/C++/Source/Non_class_members/Operators/integrale2d.C,v 1.2 2014/10/13 08:53:23 j_novak Exp $" ;
/*
* $Id $
* $Log $
*
* $Header: /cvsroot/Lorene/C++/Source/Non_class_members/Operators/integrale2d.C,v 1.2 2014/10/13 08:53:23 j_novak Exp $
*
*/
// Lorene headers
#include "tensor.h"
namespace Lorene {
double integrale2d(const Scalar& fi) {
const Map* mp = &fi.get_mp() ;
const Map_af* mp_aff = dynamic_cast<const Map_af*>(mp) ;
assert( mp_aff != 0x0 ) ;
assert( fi.check_dzpuis(4) || fi.check_dzpuis(3) ) ;
double lambda ;
if (fi.get_etat() == ETATZERO) lambda = 0. ;
else {
const Base_val& base = fi.get_spectral_base() ;
Scalar tmp(*mp_aff) ;
tmp.annule_hard() ;
tmp.set_dzpuis(fi.get_dzpuis()) ;
tmp += fi ;
tmp.set_spectral_base(base) ;
const Mg3d& mg = *mp_aff->get_mg() ;
int nz0 = mg.get_nzone() ;
tmp.mult_r_dzpuis(2) ;
tmp.set_spectral_va().coef() ;
tmp.set_spectral_va().ylm_i() ;
Mtbl_cf& mtc = *tmp.set_spectral_va().c_cf ;
for (int lz=0; lz<nz0; lz++) {
int np0 = mg.get_np(lz)+2 ;
int nt0 = mg.get_nt(lz) ;
int nr0 = mg.get_nr(lz) ;
for (int k=0; k<np0; k++)
for (int j=0; j<nt0; j++)
for (int i=0; i<nr0; i++) {
double resu = 0. ;
if ((j==0)&&(k==0))
resu = mtc(lz, k, j, i) ;
mtc.set(lz, k, j, i) = resu ;
}
}
if (tmp.get_spectral_va().c != 0x0) {
delete tmp.set_spectral_va().c ;
tmp.set_spectral_va().c = 0x0 ;
}
Scalar integ(*mp_aff) ;
mp_aff->primr(tmp, integ, true) ;
lambda = -integ.val_grid_point(0,0,0,0) ;
}
return lambda ;
}
}
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