/usr/include/rheolef/form_weighted.h is in librheolef-dev 6.5-1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# define _RHEOLEF_FORM_WEIGHTED_H
///
/// This file is part of Rheolef.
///
/// Copyright (C) 2000-2009 Pierre Saramito <Pierre.Saramito@imag.fr>
///
/// Rheolef 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.
///
/// Rheolef 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 Rheolef; if not, write to the Free Software
/// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
///
/// =========================================================================
// form constructor: old interface with name
// maintained for backward compatibility purpose
//
#include "rheolef/form.h"
#include "rheolef/field_vf_expr_ops.h"
#include "rheolef/form_vf_expr_ops.h"
#include "rheolef/operators2.h"
#include "rheolef/form_vf_assembly.h"
namespace rheolef {
// backward compat with named forms:
// for each weight, it compiles all cases
// => not very efficient !
template<class T, class M, class WeightFunction>
bool
form_named_init (
form_basic<T,M>& a,
const geo_basic<T,M>& dom,
const std::string& name,
bool has_weight,
WeightFunction w,
const quadrature_option_type& qopt)
{
// backward compatibility code:
// branch to variational formulation routines:
test_basic<T,M,details::vf_tag_10> u (a.get_first_space()); // trial
test_basic<T,M,details::vf_tag_01> v (a.get_second_space()); // test
// --------------------------------
if (name == "mass") {
// --------------------------------
switch (a.get_first_space().valued_tag()) {
case space_constant::scalar:
if (!has_weight) a.assembly (dom, u*v, qopt);
else a.assembly (dom, w*(u*v), qopt);
return true;
case space_constant::vector:
if (!has_weight) a.assembly (dom, dot(u,v), qopt);
else fatal_macro ("unsupported vectorial mass with weight (HINT: use integrate())");
// a.assembly (dom, dot(w*u,v), qopt); compil pbs ?
return true;
default:
case space_constant::tensor:
if (!has_weight) a.assembly (dom, ddot(u,v), qopt);
else fatal_macro ("unsupported tensorial mass with weight (HINT: use integrate())");
// a.assembly (dom, ddot(w*u,v), qopt); compil pbs ?
return true;
}
// --------------------------------
} else if (name == "inv_mass") {
// --------------------------------
check_macro (!has_weight, "unsupported weighted "<<name<<" form (HINT: use integrate())");
form_option_type fopt (qopt);
fopt.invert = true;
switch (a.get_first_space().valued_tag()) {
case space_constant::scalar: a.assembly (dom, u*v, fopt); return true;
case space_constant::vector: a.assembly (dom, dot(u,v), fopt); return true;
default:
case space_constant::tensor: a.assembly (dom, ddot(u,v), fopt); return true;
}
// --------------------------------
} else if (name == "lumped_mass") {
// --------------------------------
check_macro (!has_weight, "unsupported weighted "<<name<<" form (HINT: use integrate())");
form_option_type fopt (qopt);
fopt.lump = true;
switch (a.get_first_space().valued_tag()) {
case space_constant::scalar: a.assembly (dom, u*v, fopt); return true;
case space_constant::vector: a.assembly (dom, dot(u,v), fopt); return true;
default:
case space_constant::tensor: a.assembly (dom, ddot(u,v), fopt); return true;
}
// --------------------------------
} else if (name == "grad") {
// --------------------------------
if (!has_weight) a.assembly (dom, dot(grad(u),v), qopt);
else a.assembly (dom, dot(w*grad(u),v), qopt);
return true;
// --------------------------------
} else if (name == "div") {
// --------------------------------
check_macro (!has_weight, "unsupported weighted "<<name<<" form (HINT: use integrate())");
a.assembly (dom, div(u)*v, qopt);
return true;
// --------------------------------
} else if (name == "2D") {
// --------------------------------
if (!has_weight) a.assembly (dom, 2.*ddot(D(u),v), qopt);
else a.assembly (dom, 2.*ddot(w*D(u),v), qopt);
return true;
// --------------------------------
} else if (name == "grad_grad") {
// --------------------------------
switch (a.get_first_space().valued_tag()) {
case space_constant::scalar:
if (!has_weight) a.assembly (dom, dot(grad(u),grad(v)), qopt);
else a.assembly (dom, dot(w*grad(u),grad(v)), qopt);
return true;
default:
case space_constant::vector:
if (!has_weight) a.assembly (dom, ddot(grad(u),grad(v)), qopt);
else a.assembly (dom, ddot(w*grad(u),grad(v)), qopt);
return true;
}
// --------------------------------
} else if (name == "2D_D") {
// --------------------------------
if (!has_weight) a.assembly (dom, 2.*ddot(D(u),D(v)), qopt);
else a.assembly (dom, 2.*ddot(w*D(u),D(v)), qopt);
return true;
// --------------------------------
} else if (name == "div_div") {
// --------------------------------
check_macro (!has_weight, "unsupported weighted "<<name<<" form (HINT: use integrate())");
a.assembly (dom, div(u)*div(v), qopt);
return true;
// --------------------------------
} else if (name == "curl") {
// --------------------------------
check_macro (!has_weight, "unsupported weighted "<<name<<" form (HINT: use integrate())");
if (u.get_vf_space().get_geo().dimension() == 2 &&
u.get_vf_space().valued_tag() == space_constant::vector)
a.assembly (dom, curl(u)*v, qopt);
else a.assembly (dom, dot(curl(u),v), qopt);
return true;
}
return false;
}
template<class T, class M>
template<class WeightFunction>
void
form_basic<T,M>::form_init (
const std::string& name,
bool has_weight,
WeightFunction w,
const quadrature_option_type& qopt)
{
if (name == "" || name == "nul" || name == "null") {
// empty name => nul form, but with declared csr matrix sizes
_uu.resize (_Y.iu_ownership(), _X.iu_ownership());
_ub.resize (_Y.iu_ownership(), _X.ib_ownership());
_bu.resize (_Y.ib_ownership(), _X.iu_ownership());
_bb.resize (_Y.ib_ownership(), _X.ib_ownership());
return;
}
// determine the domain of integration:
typedef typename form_basic<T,M>::float_type float_type;
check_macro (_X.get_geo().get_background_geo() == _Y.get_geo().get_background_geo(),
"form("<<name<<") between incompatible geo " << _X.get_geo().name() << " and " << _Y.get_geo().name());
bool X_is_on_domain = (_X.get_geo().variant() == geo_abstract_base_rep<float_type>::geo_domain);
bool Y_is_on_domain = (_Y.get_geo().variant() == geo_abstract_base_rep<float_type>::geo_domain);
geo_basic<T,M> dom;
if ((!X_is_on_domain && ! Y_is_on_domain) || (X_is_on_domain && Y_is_on_domain)) {
dom = _X.get_geo();
} else if (X_is_on_domain) {
dom = _X.get_geo().get_background_domain();
} else {// Y_is_on_domain
dom = _Y.get_geo().get_background_domain();
}
// try the new form initializer interface:
if (form_named_init (*this, dom, name, has_weight, w, qopt)) return;
fatal_macro ("unsupported form name: \""<<name<<"\" (HINT: use integrate())");
}
template<class T, class M>
template<class Function>
inline
form_basic<T,M>::form_basic (
const space_type& X,
const space_type& Y,
const std::string& name,
Function weight,
const quadrature_option_type& qopt)
: _X(X),
_Y(Y),
_uu(),
_ub(),
_bu(),
_bb()
{
form_init (name, true, weight, qopt);
}
// ================================================================
// also for Robin boundary conditions with a non-constant coef
// ================================================================
template<class T, class M>
template<class WeightFunction>
void
form_basic<T,M>::form_init_on_domain (
const std::string& name,
const geo_basic<T,M>& gamma,
bool has_weight,
WeightFunction w,
const geo_basic<T,M>& w_omega,
const quadrature_option_type& qopt)
{
const geo_basic<T,M>& omega = _X.get_geo().get_background_geo();
// try the new interface:
if (form_named_init (*this, gamma, name, has_weight, w, qopt)) return;
fatal_macro ("unsupported form name: \""<<name<<"\"");
}
template<class T, class M>
template<class Function>
form_basic<T,M>::form_basic (
const space_type& X,
const space_type& Y,
const std::string& name,
const geo_basic<T,M>& gamma,
Function weight,
const quadrature_option_type& qopt)
: _X(X),
_Y(Y),
_uu(),
_ub(),
_bu(),
_bb()
{
// example:
// form m (V,V,"mass",gamma, weight); e.g. \int_\Gamma trace(u) trace(v) weight(x) ds
// with:
// geo omega ("square");
// geo gamma = omega["boundary"];
// V = space(omega,"P1");
// Note: transform the domain gamma into a compacted-mesh for the
// evaluation of the weight
form_init_on_domain (name, gamma, true, weight, compact(gamma), qopt);
}
}// namespace rheolef
# endif /* _RHEOLEF_FORM_WEIGHTED_H */
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