/usr/include/linbox/algorithms/blackbox-container-base.h is in liblinbox-dev 1.3.2-1.1.
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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 | /* linbox/algorithms/blackbox-container.h
* Copyright (C) 1999, 2001 Jean-Guillaume Dumas
*
* Written by Jean-Guillaume Dumas <Jean-Guillaume.Dumas@imag.fr>
*
* ========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_blackbox_container_base_H
#define __LINBOX_blackbox_container_base_H
// ================================================================
// Base ForwardIterator wrapper for BlackBoxes
// Have to be provided :
// - launch : launches the following computation
// - wait : waits for the end of the current computation
// ================================================================
#include "linbox/vector/vector-domain.h"
namespace LinBox
{
#ifndef MIN
# define MIN(a,b) ((a)<(b)?(a):(b))
#endif
/** \brief A base class for BlackboxContainer.
* The primary member function is begin().
* It returns an iterator which after i increments (++) dereferences to
* $v^T A^i u$, for $v$ and $u$ determined by the form of construction.
* It is designed to be used with implementations of Berlekamp-Massey
* such as MasseyDom.
*
* Subclasses complete the implementation by defining _launch() and _wait().
*/
template<class Field, class Blackbox>
class BlackboxContainerBase {
public:
typedef typename Field::Element Element;
//-- Constructors
BlackboxContainerBase () {}
BlackboxContainerBase (const Blackbox *BB, const Field &F) :
_field (F), _VD (F), _BB (BB), _size ((long)MIN (BB->rowdim (), BB->coldim ()))
{
_size <<= 1;
}
// Pascal Giorgi 16.02.2004
BlackboxContainerBase (const Blackbox *BB, const Field &F, unsigned long Size) :
_field (F), _VD (F), _BB (BB), _size ((long)Size)
{}
virtual ~BlackboxContainerBase ()
{
//delete _BB;
}
class const_iterator {
BlackboxContainerBase<Field, Blackbox> &_c;
public:
//const_iterator () {} // BB ??
const_iterator (BlackboxContainerBase<Field, Blackbox> &C) :
_c (C)
{}
const_iterator &operator ++ () { _c._launch (); return *this; }
const Element &operator * () { _c._wait (); return _c.getvalue (); }
};
const_iterator begin () { return const_iterator (*this); }
const_iterator end () { return const_iterator (); }
long size () const { return _size; }
const Field &getField () const { return _field; }
Blackbox *getBB () const { return _BB; }
protected:
friend class const_iterator;
/** Launches a process to do the computation of the next sequence
* value: $v^T A^{i+1} u$. ...or just does it.
*/
virtual void _launch() = 0;
/** If a separate process is computing the next value of $v^T A^{i+1} u$,
* _wait() blocks until the value is ready.
*/
virtual void _wait() = 0;
//--------------
/// Members
//--------------
Field _field;
VectorDomain<Field> _VD;
const Blackbox *_BB;
long _size;
// BDS 22.03.03
long casenumber;
std::vector<Element> u, v;
Element _value;
const Element &getvalue() { return _value; }
//--------------
/// Initializers
//--------------
/// User Left and Right vectors
template<class Vector1, class Vector2>
Element &init (const Vector1& uu, const Vector2& vv) {
casenumber = 1;
u.resize(uu.size());
std::copy(uu.begin(),uu.end(),u.begin());
//u = uu;
v.resize(vv.size());
std::copy(vv.begin(),vv.end(),v.begin());
//v = vv;
// JGD 22.03.03
// return _VD.dot (_value, u, u);
return _VD.dot (_value, u, v);
}
/// Random Left vectors, Zero Right vector
template<class RandIter>
Element &init (RandIter& g)
{
casenumber = 1;
u.resize (_BB->coldim ());
for (long i = u.size (); i--;)
g.random (u[i]);
v.resize (_BB->rowdim ());
return _VD.dot (_value, u, u);
}
/// User Left vectors, Zero Right vector
template<class Vector>
Element &init (const Vector& uu) {
casenumber = 1;
u.resize(uu.size());
std::copy(uu.begin,uu.end(),u.begin());
v.resize (_BB->rowdim ());
return _VD.dot (_value, u, u);
}
};
}
#endif // __LINBOX_blackbox_container_base_H
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