/usr/include/deal.II/matrix_free/shape_info.templates.h is in libdeal.ii-dev 8.1.0-6ubuntu1.
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 | // ---------------------------------------------------------------------
// $Id: shape_info.templates.h 31495 2013-10-31 12:58:57Z kronbichler $
//
// Copyright (C) 2011 - 2013 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.
//
// ---------------------------------------------------------------------
#include <deal.II/base/utilities.h>
#include <deal.II/base/memory_consumption.h>
#include <deal.II/base/polynomial.h>
#include <deal.II/base/tensor_product_polynomials.h>
#include <deal.II/base/polynomials_piecewise.h>
#include <deal.II/fe/fe_poly.h>
#include <deal.II/matrix_free/shape_info.h>
DEAL_II_NAMESPACE_OPEN
namespace internal
{
namespace MatrixFreeFunctions
{
// ----------------- actual ShapeInfo functions --------------------
template <typename Number>
ShapeInfo<Number>::ShapeInfo ()
:
n_q_points (0),
dofs_per_cell (0)
{}
template <typename Number>
template <int dim>
void
ShapeInfo<Number>::reinit (const Quadrature<1> &quad,
const FiniteElement<dim> &fe)
{
Assert (fe.n_components() == 1,
ExcMessage("FEEvaluation only works for scalar finite elements."));
const unsigned int n_dofs_1d = fe.degree+1,
n_q_points_1d = quad.size();
AssertDimension(fe.dofs_per_cell, Utilities::fixed_power<dim>(n_dofs_1d));
std::vector<unsigned int> lexicographic (fe.dofs_per_cell);
// renumber (this is necessary for FE_Q, for example, since there the
// vertex DoFs come first, which is incompatible with the lexicographic
// ordering necessary to apply tensor products efficiently)
{
const FE_Poly<TensorProductPolynomials<dim>,dim,dim> *fe_poly =
dynamic_cast<const FE_Poly<TensorProductPolynomials<dim>,dim,dim>*>(&fe);
const FE_Poly<TensorProductPolynomials<dim,Polynomials::
PiecewisePolynomial<double> >,dim,dim> *fe_poly_piece =
dynamic_cast<const FE_Poly<TensorProductPolynomials<dim,
Polynomials::PiecewisePolynomial<double> >,dim,dim>*> (&fe);
Assert (fe_poly != 0 || fe_poly_piece, ExcNotImplemented());
lexicographic = fe_poly != 0 ?
fe_poly->get_poly_space_numbering_inverse() :
fe_poly_piece->get_poly_space_numbering_inverse();
// to evaluate 1D polynomials, evaluate along the line where y=z=0,
// assuming that shape_value(0,Point<dim>()) == 1. otherwise, need
// other entry point (e.g. generating a 1D element by reading the
// name, as done before r29356)
Assert(std::fabs(fe.shape_value(lexicographic[0], Point<dim>())-1) < 1e-13,
ExcInternalError());
}
n_q_points = Utilities::fixed_power<dim>(n_q_points_1d);
dofs_per_cell = Utilities::fixed_power<dim>(n_dofs_1d);
n_q_points_face = dim>1?Utilities::fixed_power<dim-1>(n_q_points_1d):1;
dofs_per_face = dim>1?Utilities::fixed_power<dim-1>(n_dofs_1d):1;
const unsigned int array_size = n_dofs_1d*n_q_points_1d;
this->shape_gradients.resize_fast (array_size);
this->shape_values.resize_fast (array_size);
this->shape_hessians.resize_fast (array_size);
this->face_value[0].resize(n_dofs_1d);
this->face_gradient[0].resize(n_dofs_1d);
this->subface_value[0].resize(array_size);
this->face_value[1].resize(n_dofs_1d);
this->face_gradient[1].resize(n_dofs_1d);
this->subface_value[1].resize(array_size);
this->shape_values_number.resize (array_size);
this->shape_gradient_number.resize (array_size);
for (unsigned int i=0; i<n_dofs_1d; ++i)
{
// need to reorder from hierarchical to lexicographic to get the
// DoFs correct
const unsigned int my_i = lexicographic[i];
for (unsigned int q=0; q<n_q_points_1d; ++q)
{
// fill both vectors with
// VectorizedArray<Number>::n_array_elements
// copies for the shape information and
// non-vectorized fields
Point<dim> q_point;
q_point[0] = quad.get_points()[q][0];
shape_values_number[i*n_q_points_1d+q] = fe.shape_value(my_i,q_point);
shape_gradient_number[i*n_q_points_1d+q] = fe.shape_grad (my_i,q_point)[0];
shape_values [i*n_q_points_1d+q] =
shape_values_number [i*n_q_points_1d+q];
shape_gradients[i*n_q_points_1d+q] =
shape_gradient_number[i*n_q_points_1d+q];
shape_hessians[i*n_q_points_1d+q] =
fe.shape_grad_grad(my_i,q_point)[0][0];
q_point[0] *= 0.5;
subface_value[0][i*n_q_points_1d+q] = fe.shape_value(my_i,q_point);
q_point[0] += 0.5;
subface_value[1][i*n_q_points_1d+q] = fe.shape_value(my_i,q_point);
}
Point<dim> q_point;
this->face_value[0][i] = fe.shape_value(my_i,q_point);
this->face_gradient[0][i] = fe.shape_grad(my_i,q_point)[0];
q_point[0] = 1;
this->face_value[1][i] = fe.shape_value(my_i,q_point);
this->face_gradient[1][i] = fe.shape_grad(my_i,q_point)[0];
}
// face information
unsigned int n_faces = GeometryInfo<dim>::faces_per_cell;
this->face_indices.reinit(n_faces, this->dofs_per_face);
switch (dim)
{
case 3:
{
for (unsigned int i=0; i<this->dofs_per_face; i++)
{
const unsigned int jump_term =
this->dofs_per_face*((i*n_dofs_1d)/this->dofs_per_face);
this->face_indices(0,i) = i*n_dofs_1d;
this->face_indices(1,i) = i*n_dofs_1d + n_dofs_1d-1;
this->face_indices(2,i) = i%n_dofs_1d + jump_term;
this->face_indices(3,i) = (i%n_dofs_1d + jump_term +
(n_dofs_1d-1)*n_dofs_1d);
this->face_indices(4,i) = i;
this->face_indices(5,i) = (n_dofs_1d-1)*this->dofs_per_face+i;
}
break;
}
case 2:
{
for (unsigned int i=0; i<n_dofs_1d; i++)
{
this->face_indices(0,i) = n_dofs_1d*i;
this->face_indices(1,i) = n_dofs_1d*i + n_dofs_1d-1;
this->face_indices(2,i) = i;
this->face_indices(3,i) = (n_dofs_1d-1)*n_dofs_1d+i;
}
break;
}
case 1:
{
this->face_indices(0,0) = 0;
this->face_indices(1,0) = n_dofs_1d-1;
break;
}
default:
Assert (false, ExcNotImplemented());
}
}
template <typename Number>
std::size_t
ShapeInfo<Number>::memory_consumption () const
{
std::size_t memory = sizeof(*this);
memory += MemoryConsumption::memory_consumption(shape_values);
memory += MemoryConsumption::memory_consumption(shape_gradients);
memory += MemoryConsumption::memory_consumption(shape_hessians);
memory += face_indices.memory_consumption();
for (unsigned int i=0; i<2; ++i)
{
memory += MemoryConsumption::memory_consumption(face_value[i]);
memory += MemoryConsumption::memory_consumption(face_gradient[i]);
}
memory += MemoryConsumption::memory_consumption(shape_values_number);
memory += MemoryConsumption::memory_consumption(shape_gradient_number);
return memory;
}
// end of functions for ShapeInfo
} // end of namespace MatrixFreeFunctions
} // end of namespace internal
DEAL_II_NAMESPACE_CLOSE
|