/usr/include/deal.II/lac/matrix_lib.templates.h is in libdeal.ii-dev 8.4.2-2+b1.
This file is owned by root:root, with mode 0o644.
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//
// Copyright (C) 2002 - 2015 by the deal.II authors
//
// This file is part of the deal.II library.
//
// The deal.II library is free software; you can use it, redistribute
// it, and/or modify it under the terms of the GNU Lesser General
// Public License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// The full text of the license can be found in the file LICENSE at
// the top level of the deal.II distribution.
//
// ---------------------------------------------------------------------
#ifndef dealii__matrix_lib_templates_h
#define dealii__matrix_lib_templates_h
#include <deal.II/lac/matrix_lib.h>
#include <deal.II/lac/vector.h>
#include <deal.II/lac/block_vector.h>
DEAL_II_NAMESPACE_OPEN
template <typename number>
void
MeanValueFilter::filter(Vector<number> &v) const
{
number mean = v.mean_value();
for (size_type i=0; i<v.size(); ++i)
v(i) -= mean;
}
template <typename number>
void
MeanValueFilter::vmult(Vector<number> &dst,
const Vector<number> &src) const
{
Assert (dst.size() == src.size(),
ExcDimensionMismatch(dst.size(), src.size()));
number mean = src.mean_value();
for (size_type i=0; i<dst.size(); ++i)
dst(i) = src(i) - mean;
}
template <typename number>
void
MeanValueFilter::vmult_add(Vector<number> &dst,
const Vector<number> &src) const
{
Assert (dst.size() == src.size(),
ExcDimensionMismatch(dst.size(), src.size()));
number mean = src.mean_value();
for (size_type i=0; i<dst.size(); ++i)
dst(i) += src(i) - mean;
}
template <typename number>
void
MeanValueFilter::filter(BlockVector<number> &v) const
{
Assert (component != numbers::invalid_unsigned_int,
ExcNotInitialized());
for (unsigned int i=0; i<v.n_blocks(); ++i)
if (i == component)
vmult(v.block(i), v.block(i));
else
v.block(i) = v.block(i);
}
template <typename number>
void
MeanValueFilter::vmult(BlockVector<number> &dst,
const BlockVector<number> &src) const
{
Assert (component != numbers::invalid_unsigned_int,
ExcNotInitialized());
Assert (dst.n_blocks() == src.n_blocks(),
ExcDimensionMismatch(dst.n_blocks(), src.n_blocks()));
for (unsigned int i=0; i<dst.n_blocks(); ++i)
if (i == component)
vmult(dst.block(i), src.block(i));
else
dst.block(i) = src.block(i);
}
template <typename number>
void
MeanValueFilter::vmult_add(BlockVector<number> &dst,
const BlockVector<number> &src) const
{
Assert (component != numbers::invalid_unsigned_int,
ExcNotInitialized());
Assert (dst.n_blocks() == src.n_blocks(),
ExcDimensionMismatch(dst.n_blocks(), src.n_blocks()));
for (unsigned int i=0; i<dst.n_blocks(); ++i)
if (i == component)
vmult_add(dst.block(i), src.block(i));
else
dst.block(i).add(src.block(i));
}
//----------------------------------------------------------------------//
template <typename VectorType>
InverseMatrixRichardson<VectorType>::InverseMatrixRichardson(
SolverControl &c,
VectorMemory<VectorType> &m)
:
mem(m),
solver(c,m),
matrix(0),
precondition(0)
{}
template <typename VectorType>
InverseMatrixRichardson<VectorType>::~InverseMatrixRichardson()
{
if (matrix != 0) delete matrix;
if (precondition != 0) delete precondition;
}
template <typename VectorType>
void
InverseMatrixRichardson<VectorType>::vmult(VectorType &dst, const VectorType &src) const
{
Assert (matrix != 0, ExcNotInitialized());
Assert (precondition != 0, ExcNotInitialized());
dst = 0.;
solver.solve(*matrix, dst, src, *precondition);
}
template <typename VectorType>
void
InverseMatrixRichardson<VectorType>::vmult_add(VectorType &dst, const VectorType &src) const
{
Assert (matrix != 0, ExcNotInitialized());
Assert (precondition != 0, ExcNotInitialized());
VectorType *aux = mem.alloc();
aux->reinit(dst);
solver.solve(*matrix, *aux, src, *precondition);
dst += *aux;
mem.free(aux);
}
template <typename VectorType>
void
InverseMatrixRichardson<VectorType>::Tvmult(VectorType &dst, const VectorType &src) const
{
Assert (matrix != 0, ExcNotInitialized());
Assert (precondition != 0, ExcNotInitialized());
dst = 0.;
solver.Tsolve(*matrix, dst, src, *precondition);
}
template <typename VectorType>
void
InverseMatrixRichardson<VectorType>::Tvmult_add(VectorType &dst, const VectorType &src) const
{
Assert (matrix != 0, ExcNotInitialized());
Assert (precondition != 0, ExcNotInitialized());
VectorType *aux = mem.alloc();
aux->reinit(dst);
solver.Tsolve(*matrix, *aux, src, *precondition);
dst += *aux;
mem.free(aux);
}
DEAL_II_NAMESPACE_CLOSE
#endif
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