/usr/include/linbox/matrix/matrixdomain/matrix-domain-gf2.h is in liblinbox-dev 1.4.2-3.
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 | /* linbox/matrix/matrix-domain.h
* Copyright (C) 2002 Zhendong Wan, Bradford Hovinen
*
* Written by Zhendong Wan <wan@mail.eecis.udel.edu>,
* Bradford Hovinen <bghovinen@math.uwaterloo.ca>
*
* ------------------------------------------------------------
* 2002-11-26 Bradford Hovinen <bghovinen@math.uwaterloo.ca>
*
* Added detailed documentation, cleaned up the interface slightly, and added
* support for matrix traits. Added read, write, neg, negin, axpy, and
* matrix-vector and matrix-black box operations.
* ------------------------------------------------------------
*
*
* ========LICENCE========
* This file is part of the library LinBox.
*
* LinBox is free software: you can 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.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
* ========LICENCE========
*.
*/
#ifndef __LINBOX_matrix_domain_H
#define __LINBOX_matrix_domain_H
#include <iostream>
#include "linbox/field/gf2.h"
#include "linbox/matrix/matrix-domain.h"
// Specialization of MatrixDomain for GF2
namespace LinBox
{
/*! Specialization of MatrixDomain for GF2.
* @bug this is half done and makes MatrixDomain on GF2 hardly usable.
* @todo this is where m4ri will play.
*/
template <>
class MatrixDomain<GF2> {
public:
MatrixDomain (const GF2 &F) :
_VD (F)
{}
template <class Vector1, class Matrix, class Vector2>
Vector1 &vectorMul (Vector1 &w, const Matrix &A, const Vector2 &v) const
{
return mulSpecialized (w, A, v, typename MatrixTraits<Matrix>::MatrixCategory ());
}
template <class Vector1, class Matrix, class Vector2>
Vector1 &mulSpecialized (Vector1 &w, const Matrix &A, const Vector2 &v,
MatrixCategories::RowMatrixTag) const
{
return mulRowSpecialized (w, A, v, typename VectorTraits<Vector1>::VectorCategory ());
}
template <class Vector1, class Matrix, class Vector2>
Vector1 &mulSpecialized (Vector1 &w, const Matrix &A, const Vector2 &v,
MatrixCategories::ColMatrixTag) const
{
return mulColSpecialized (w, A, v,
typename VectorTraits<Vector1>::VectorCategory (),
typename VectorTraits<Vector2>::VectorCategory ());
}
template <class Vector1, class Matrix, class Vector2>
Vector1 &mulSpecialized (Vector1 &w, const Matrix &A, const Vector2 &v,
MatrixCategories::RowColMatrixTag) const
{
return mulRowSpecialized (w, A, v, typename VectorTraits<Vector1>::VectorCategory ());
}
template <class Vector1, class Matrix, class Vector2>
Vector1 &mulRowSpecialized (Vector1 &w, const Matrix &A, const Vector2 &v,
VectorCategories::DenseZeroOneVectorTag) const;
template <class Vector1, class Matrix, class Vector2>
Vector1 &mulRowSpecialized (Vector1 &w, const Matrix &A, const Vector2 &v,
VectorCategories::SparseZeroOneVectorTag) const;
template <class Vector1, class Matrix, class Vector2>
Vector1 &mulColSpecialized (Vector1 &w, const Matrix &A, const Vector2 &v,
VectorCategories::DenseZeroOneVectorTag,
VectorCategories::DenseZeroOneVectorTag) const;
template <class Vector1, class Matrix, class Vector2>
Vector1 &mulColSpecialized (Vector1 &w, const Matrix &A, const Vector2 &v,
VectorCategories::DenseZeroOneVectorTag,
VectorCategories::SparseZeroOneVectorTag) const;
VectorDomain<GF2> _VD;
};
template <class Vector1, class Matrix, class Vector2>
Vector1 &MatrixDomain<GF2>::mulRowSpecialized (Vector1 &w, const Matrix &A, const Vector2 &v,
VectorCategories::DenseZeroOneVectorTag) const
{
linbox_check (A.coldim () == v.size ());
linbox_check (A.rowdim () == w.size ());
typename Matrix::ConstRowIterator i = A.rowBegin ();
typename Vector1::iterator j = w.begin ();
for (; j != w.end (); ++j, ++i)
_VD.dot (*j, v, *i);
return w;
}
template <class Vector1, class Matrix, class Vector2>
Vector1 &MatrixDomain<GF2>::mulRowSpecialized (Vector1 &w, const Matrix &A, const Vector2 &v,
VectorCategories::SparseZeroOneVectorTag) const
{
typename Matrix::ConstRowIterator i = A.rowBegin ();
GF2::Element t;
unsigned int idx = 0;
w.clear ();
for (; i != A.rowEnd (); ++i, ++idx) {
_VD.dot (t, v, *i);
if (t)
w.push_back (t);
}
return w;
}
template <class Vector1, class Matrix, class Vector2 >
Vector1 &MatrixDomain<GF2>::mulColSpecialized (Vector1 &w, const Matrix &A, const Vector2 &v,
VectorCategories::DenseZeroOneVectorTag,
VectorCategories::DenseZeroOneVectorTag) const
{
linbox_check (A.coldim () == v.size ());
linbox_check (A.rowdim () == w.size ());
typename Matrix::ConstColIterator i = A.colBegin ();
typename Vector2::const_iterator j = v.begin ();
//!@bug what's happening here ?
_VD.subin (w, w);
for (; j != v.end (); ++j, ++i)
_VD.axpyin (w, *j, *i);
return w;
}
template <class Vector1, class Matrix, class Vector2>
Vector1 &MatrixDomain<GF2>::mulColSpecialized (Vector1 &w, const Matrix &A, const Vector2 &v,
VectorCategories::DenseZeroOneVectorTag,
VectorCategories::SparseZeroOneVectorTag) const
{
linbox_check (A.rowdim () == w.size ());
typename Vector2::const_iterator j = v.begin ();
_VD.subin (w, w);
for (; j != v.end (); ++j) {
typename Matrix::ConstColIterator i = A.colBegin () + *j;
_VD.axpyin (w, true, *i);
}
return w;
}
}
#endif // __LINBOX_matrix_domain_H
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