C-XSC - A C++ Class Library for Extended Scientific Computing
2.5.4
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00001 /* 00002 ** CXSC is a C++ library for eXtended Scientific Computing (V 2.5.4) 00003 ** 00004 ** Copyright (C) 1990-2000 Institut fuer Angewandte Mathematik, 00005 ** Universitaet Karlsruhe, Germany 00006 ** (C) 2000-2014 Wiss. Rechnen/Softwaretechnologie 00007 ** Universitaet Wuppertal, Germany 00008 ** 00009 ** This library is free software; you can redistribute it and/or 00010 ** modify it under the terms of the GNU Library General Public 00011 ** License as published by the Free Software Foundation; either 00012 ** version 2 of the License, or (at your option) any later version. 00013 ** 00014 ** This library is distributed in the hope that it will be useful, 00015 ** but WITHOUT ANY WARRANTY; without even the implied warranty of 00016 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00017 ** Library General Public License for more details. 00018 ** 00019 ** You should have received a copy of the GNU Library General Public 00020 ** License along with this library; if not, write to the Free 00021 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00022 */ 00023 00024 /* CVS $Id: l_rmatrix.cpp,v 1.16 2014/01/30 17:23:46 cxsc Exp $ */ 00025 00026 #define _CXSC_CPP 00027 00028 #include "l_rmatrix.hpp" 00029 #include "matrix.inl" 00030 #include "l_rmatrix.inl" 00031 #include "lrvecrmat.inl" 00032 00033 namespace cxsc { 00034 l_rmatrix Id ( const l_rmatrix& A ) // l_real identity matrix 00035 { //----------------------- 00036 int i,j; 00037 int lbi = Lb(A,1), ubi = Ub(A,1); 00038 int lbj = Lb(A,2), ubj = Ub(A,2); 00039 l_rmatrix B(lbi,ubi,lbj,ubj); 00040 00041 for (i = lbi; i <= ubi; i++) 00042 for (j = lbj; j <= ubj; j++) 00043 B[i][j] = (i==j) ? 1.0 : 0.0; 00044 return B; 00045 } 00046 00047 l_rmatrix transp ( const l_rmatrix& A ) // Transposed matrix 00048 { //------------------ 00049 int n; 00050 l_rmatrix res(Lb(A,2),Ub(A,2),Lb(A,1),Ub(A,1)); 00051 00052 for (n = Lb(A,1); n <= Ub(A,1); n++) Col(res,n) = Row(A,n); 00053 return res; 00054 } 00055 00056 void DoubleSize ( l_rmatrix& A ) 00057 { 00058 int n = Lb(A,1); 00059 Resize(A,n,2*Ub(A,1)-n+1,Lb(A,2),Ub(A,2)); 00060 } 00061 00062 } // namespace cxsc 00063