/usr/include/dune/pdelab/gridoperator/onestep/residualengine.hh is in libdune-pdelab-dev 2.5.0~20170124g7cf9f47a-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 | #ifndef DUNE_PDELAB_GRIDOPERATOR_ONESTEP_RESIDUALENGINE_HH
#define DUNE_PDELAB_GRIDOPERATOR_ONESTEP_RESIDUALENGINE_HH
#include <dune/pdelab/gridoperator/onestep/enginebase.hh>
#include <cmath>
namespace Dune{
namespace PDELab{
/**
\brief The local assembler engine for one step methods which
assembles the residual vector
\tparam LA The local one step assembler
*/
template<typename OSLA>
class OneStepLocalResidualAssemblerEngine
: public OneStepLocalAssemblerEngineBase<OSLA,
typename OSLA::LocalAssemblerDT0::LocalResidualAssemblerEngine,
typename OSLA::LocalAssemblerDT1::LocalResidualAssemblerEngine
>
{
typedef OneStepLocalAssemblerEngineBase<OSLA,
typename OSLA::LocalAssemblerDT0::LocalResidualAssemblerEngine,
typename OSLA::LocalAssemblerDT1::LocalResidualAssemblerEngine
> BaseT;
using BaseT::la;
using BaseT::lae0;
using BaseT::lae1;
using BaseT::implicit;
using BaseT::setLocalAssemblerEngineDT0;
using BaseT::setLocalAssemblerEngineDT1;
public:
//! The type of the wrapping local assembler
typedef OSLA OneStepLocalAssembler;
//! Types of the subordinate assemblers and engines
//! @{
typedef typename OSLA::LocalAssemblerDT0 LocalAssemblerDT0;
typedef typename OSLA::LocalAssemblerDT1 LocalAssemblerDT1;
typedef typename LocalAssemblerDT0::LocalResidualAssemblerEngine ResidualEngineDT0;
typedef typename LocalAssemblerDT1::LocalResidualAssemblerEngine ResidualEngineDT1;
//! @}
//! The type of the residual vector
typedef typename OSLA::Traits::Residual Residual;
//! The type of the solution vector
typedef typename OSLA::Traits::Solution Solution;
//! The type for real numbers
typedef typename OSLA::Real Real;
typedef OSLA LocalAssembler;
/**
\brief Constructor
\param [in] local_assembler_ The local assembler object which
creates this engine
*/
OneStepLocalResidualAssemblerEngine(const LocalAssembler & local_assembler_)
: BaseT(local_assembler_),
invalid_residual(static_cast<Residual*>(0)),
invalid_solution(static_cast<Solution*>(0)),
residual_0(invalid_residual),
residual_1(invalid_residual),
const_residual_0(invalid_residual),
const_residual_1(invalid_residual),
solution(invalid_solution)
{}
//! Set current solution vector. Must be called before
//! setResidual(). Should be called prior to assembling.
void setSolution(const Solution & solution_){
solution = &solution_;
}
//! Set current const residual vector. Must be called before
//! setResidual(). Should be called prior to assembling.
void setConstResidual(const Residual &const_residual_){
const_residual_0 = &const_residual_;
const_residual_1 = &const_residual_;
}
//! Set current const residual vector. Should be called prior to
//! assembling.
void setResidual(Residual & residual_){
residual_0 = &residual_;
residual_1 = &residual_;
// Initialize the engines of the two wrapped local assemblers
assert(solution != invalid_solution);
setLocalAssemblerEngineDT0(la.la0.localResidualAssemblerEngine(*residual_0,*solution));
setLocalAssemblerEngineDT1(la.la1.localResidualAssemblerEngine(*residual_1,*solution));
}
//! Set current const residual vectors. Must be called before
//! setResidual(). Should be called prior to assembling. Here,
//! separate vectors are used for the operators corresponding to
//! the time dervatives of order one and zero.
void setConstResiduals(const Residual &const_residual_0_, const Residual &const_residual_1_){
const_residual_0 = &const_residual_0_;
const_residual_1 = &const_residual_1_;
}
//! Set current const residual vectors. Should be called prior
//! to assembling. Here, separate vectors are used for the
//! operators corresponding to the time dervatives of order one
//! and zero.
void setResiduals(Residual & residual_0_, Residual & residual_1_){
residual_0 = &residual_0_;
residual_1 = &residual_1_;
// Initialize the engines of the two wrapped local assemblers
assert(solution != invalid_solution);
setLocalAssemblerEngineDT0(la.la0.localResidualAssemblerEngine(*residual_0,*solution));
setLocalAssemblerEngineDT1(la.la1.localResidualAssemblerEngine(*residual_1,*solution));
}
//! When multiple engines are combined in one assembling
//! procedure, this method allows to reset the weights which may
//! have been changed by the other engines.
void setWeights(){
la.la0.setWeight(b_rr * la.dt_factor0);
la.la1.setWeight(la.dt_factor1);
}
//! Notifier functions, called immediately before and after assembling
//! @{
void preAssembly()
{
lae0->preAssembly();
lae1->preAssembly();
// Extract the coefficients of the time step scheme
b_rr = la.osp_method->b(la.stage,la.stage);
d_r = la.osp_method->d(la.stage);
implicit = std::abs(b_rr) > 1e-6;
// prepare local operators for stage
la.la0.setTime(la.time + d_r * la.dt);
la.la1.setTime(la.time + d_r * la.dt);
setWeights();
}
template<typename GFSU, typename GFSV>
void postAssembly(const GFSU& gfsu, const GFSV& gfsv){
// Update residual vectors with constant part
assert(const_residual_0 != invalid_residual);
assert(const_residual_1 != invalid_residual);
*residual_0 += *const_residual_0;
if(residual_0 != residual_1){
assert(const_residual_0 != const_residual_1);
*residual_1 += *const_residual_1;
}
lae0->postAssembly(gfsu,gfsv);
lae1->postAssembly(gfsu,gfsv);
}
//! @}
private:
//! Default value indicating an invalid residual pointer
Residual * const invalid_residual;
//! Default value indicating an invalid solution pointer
Solution * const invalid_solution;
//! Pointer to the current constant part residual vector in
//! which to assemble the residual corresponding to the operator
//! representing the time derivative of order zero and one.
//! @{
Residual * residual_0;
Residual * residual_1;
//! @}
//! Pointer to the current constant part residual vectors in
//! which to assemble the residual corresponding to the operator
//! representing the time derivative of order zero and one.
//! @{
const Residual * const_residual_0;
const Residual * const_residual_1;
//! @}
//! Pointer to the current residual vector in which to assemble
const Solution * solution;
//! Coefficients of time stepping scheme
Real b_rr, d_r;
}; // End of class OneStepLocalResidualAssemblerEngine
}
}
#endif // DUNE_PDELAB_GRIDOPERATOR_ONESTEP_RESIDUALENGINE_HH
|