$$\phantom{******** If you see this on the webpage then the browser could not locate *********}$$
$$\phantom{******** jsMath/easy/load.js or the variable root is set wrong in this file *********}$$
$$\newcommand{\vector}[1]{\left[\begin{array}{c} #1 \end{array}\right]}$$ $$\newenvironment{matrix}{\left[\begin{array}{cccccccccc}} {\end{array}\right]}$$ $$\newcommand{\A}{{\cal A}}$$ $$\newcommand{\W}{{\cal W}}$$

/* Copyright 2008-2011 Research Foundation State University of New York   */

/* This file is part of QUB Express.                                      */

/* QUB Express 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 3 of the License, or      */
/* (at your option) any later version.                                    */

/* QUB Express 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,     */
/* named LICENSE.txt, in the QUB Express program directory.  If not, see  */
/* <http://www.gnu.org/licenses/>.                                        */

/*

*/

#ifndef UBLAS_MATRIXUTIL_H
#define UBLAS_MATRIXUTIL_H

// This unit has eigen and svd math for boost::ublas matrices.
// They are wrappers around classic qub fortran-style functions in matrixutil.

#include <iostream>
#include "matrixutil.h"

QUBFAST_API void invm(matrix<double>& Q_in, matrix<double>& Q_out);
QUBFAST_API bool eigen_vals_vecs(matrix<double>& Q_in, double *rvalues, double *ivalues, matrix<double>& vectors_out, matrix<double>& vectors_inv, std::ostream& output);
QUBFAST_API void expm_eig(double *rvalues, matrix<double>& vectors, matrix<double>& vectors_inv, double t, matrix<double>& tmp_nxn_diag, matrix<double>& tmp_nxn, matrix<double>& Q_out);
QUBFAST_API void expm(matrix<double>& Q_in, double t, matrix<double>& Q_out);
QUBFAST_API bool sv_decomp(matrix<double>& A, matrix<double>& U, matrix<double>& W, matrix<double>& Vi);
QUBFAST_API bool sv_decomp(double** A, int Nr, int Nc, matrix<double>& U, matrix<double>& W, matrix<double>& Vi);
QUBFAST_API bool sv_invm(double** A, int n, double** Ai);

#endif