/usr/include/linbox/matrix/random-matrix.h is in liblinbox-dev 1.4.2-3.
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* Written by Brice Boyer (briceboyer) <boyer.brice@gmail.com>
*
*
*
* ========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_random_matrix_H
#define __LINBOX_matrix_random_matrix_H
/** @file matrix/random-matrix.h
* @ingroup matrix
* @brief Implementation of random matrices.
*
* We provide function to create random matrices (dense, sparse, structured)
* on several rings. This header was first introduced to avoid code redundancy in tests/
* and make it easier to write tests/ examples/.
*
* @todo à la vector/stream.h
* @bug this belongs to algorithms...
*/
#include "linbox/matrix/dense-matrix.h"
#include "linbox/randiter/random-prime.h"
#include "linbox/matrix/permutation-matrix.h"
#include "linbox/matrix/matrix-domain.h"
#include "linbox/algorithms/cra-domain.h"
#include "linbox/algorithms/cra-full-multip-fixed.h"
#include "linbox/solutions/rank.h"
namespace LinBox
{
template<class Field> class BlasMatrixDomain ;
// non dependant struct -> out of class.
struct RankBuildMethod {
RankBuildMethod() {}
} ;
struct _LU_ : public RankBuildMethod {
_LU_(){}
} ;
// LU_sparse_,
// LU_cra_,
struct _Rank_update_ : public RankBuildMethod {
_Rank_update_() {}
} ;
/// random method for constructing rank
struct RankBuilder {
// private :
// balancedLC_
// public:
typedef _LU_ LU_ ;
typedef _Rank_update_ Rank_update_ ;
RankBuilder(){}
};
/// Random Dense Matrix builder.
template<class Randiter, class Field>
class RandomDenseMatrix {
protected:
private :
Field F_ ; //!< The field containing the random entries. @todo is there a copy made ?
/*! How are entries generated ?
* @pre need only provide <code>elmt& random(elmt&);</code>
* @see \ref LinBox::RandIterArchetype
*/
Randiter R_ ;
// Matrix & A_ ; //!< The resulting random matrix
public :
/// constructor
RandomDenseMatrix(Field & F, Randiter & R) :
F_(F), R_(R)
{ }
RandomDenseMatrix(const Field & F, Randiter & R) :
F_(F), R_(R)
{ }
/// destructor
~RandomDenseMatrix() {}
/*! creates a randomly filled matrix.
* @param A matrix to be randomized.
*/
template<class Matrix>
Matrix & random(Matrix & A) ;
/*! Create a random matrix with rank=min(rowdim,coldim)
* @param A
*/
template<class Matrix>
Matrix& randomFullRank(Matrix& A);
/*! provide a matrix with prescribed rank.
* Default method.
* @param A
* @param rank expected rank
* @warning No certificate yet.
*/
template<class Matrix>
Matrix & randomRank(Matrix & A, int rank);
/*! provide a matrix with prescribed rank.
* @param A
* @param rank expected rank
* @param meth how is the matrix generated ? see \ref RankBuilder.
* @warning No certificate yet.
*/
template<class Matrix>
Matrix & randomRank(Matrix & A, int rank
, const RankBuilder::LU_ & meth );
template<class Matrix>
Matrix & randomRank(Matrix & A, int rank
, const RankBuilder::Rank_update_ & meth );
// template<class Matrix>
// void randomInvertible();
// void randomNilpotent(int nil k); // P N_k P^(-1)
//
// Matrix& getMatrix(Matrix & A) {
// return A = A_ ;
// }
};
/// @todo To be factorized.
void RandomBlasPermutation(BlasPermutation<size_t> & P) ;
} // LinBox
#include "linbox/matrix/random-matrix.inl"
#endif // __LINBOX_matrix_random_matrix_H
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