| //===================================================== | |
| // File : init_matrix.hh | |
| // Author : L. Plagne <laurent.plagne@edf.fr)> | |
| // Copyright (C) EDF R&D, lun sep 30 14:23:19 CEST 2002 | |
| //===================================================== | |
| // | |
| // This program 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. | |
| // | |
| // This program 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 this program; if not, write to the Free Software | |
| // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
| // | |
| // The Vector class must satisfy the following part of STL vector concept : | |
| // resize() method | |
| // [] operator for setting element | |
| // value_type defined | |
| template<double init_function(int,int), class Vector> | |
| BTL_DONT_INLINE void init_row(Vector & X, int size, int row){ | |
| X.resize(size); | |
| for (unsigned int j=0;j<X.size();j++){ | |
| X[j]=typename Vector::value_type(init_function(row,j)); | |
| } | |
| } | |
| // Matrix is a Vector of Vector | |
| // The Matrix class must satisfy the following part of STL vector concept : | |
| // resize() method | |
| // [] operator for setting rows | |
| template<double init_function(int,int),class Vector> | |
| BTL_DONT_INLINE void init_matrix(Vector & A, int size){ | |
| A.resize(size); | |
| for (unsigned int row=0; row<A.size() ; row++){ | |
| init_row<init_function>(A[row],size,row); | |
| } | |
| } | |
| template<double init_function(int,int),class Matrix> | |
| BTL_DONT_INLINE void init_matrix_symm(Matrix& A, int size){ | |
| A.resize(size); | |
| for (unsigned int row=0; row<A.size() ; row++) | |
| A[row].resize(size); | |
| for (unsigned int row=0; row<A.size() ; row++){ | |
| A[row][row] = init_function(row,row); | |
| for (unsigned int col=0; col<row ; col++){ | |
| double x = init_function(row,col); | |
| A[row][col] = A[col][row] = x; | |
| } | |
| } | |
| } | |