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// Copyright (C) 2002 Zbigniew Leyk (zbigniew.leyk@anu.edu.au)
// and David E. Stewart (david.stewart@anu.edu.au)
// and Ronan Collobert (collober@iro.umontreal.ca)
//
//
// This file is part of Torch. Release II.
// [The Ultimate Machine Learning Library]
//
// Torch is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// Torch 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Torch; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#ifndef MX_SOLVE_INC
#define MX_SOLVE_INC
#include "Mat.h"
#include "Vec.h"
namespace Torch {
/* Collection of factorisations functions.
Based on the "Meschach Library", available at the
anonymous ftp site thrain.anu.edu.au in the directory
pub/meschach.
@author David E. Stewart (david.stewart@anu.edu.au)
@author Zbigniew Leyk (zbigniew.leyk@anu.edu.au)
@author Ronan Collobert (collober@iro.umontreal.ca)
*/
/* Back substitution with optional over-riding diagonal.
Can be in-situ but doesn't need to be. */
void mxUSolve(Mat * matrix, Vec * b, Vec * out, real diag);
// Forward elimination with (optional) default diagonal value.
void mxLSolve(Mat * matrix, Vec * b, Vec * out, real diag);
/* Forward elimination with (optional) default diagonal value.
Use UPPER triangular part of matrix. */
void mxUTSolve(Mat * mat, Vec * b, Vec * out, real diag);
/* Solves Dx=b where D is the diagonal of A.
May be in-situ. */
void mxDSolve(Mat * mat, Vec * b, Vec * x);
/* Back substitution with optional over-riding diagonal.
Use the LOWER triangular part of matrix.
Can be in-situ but doesn't need to be. */
void mxLTSolve(Mat * mat, Vec * b, Vec * out, real diag);
}
#endif
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