Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / secs2d-0.0.8 / Utilities / Ucompmass2.m

diff --git a/octave_packages/secs2d-0.0.8/Utilities/Ucompmass2.m b/octave_packages/secs2d-0.0.8/Utilities/Ucompmass2.m
new file mode 100644 (file)
index 0000000..b93f0da
--- /dev/null
+++ b/octave_packages/secs2d-0.0.8/Utilities/Ucompmass2.m
@@ -0,0 +1,58 @@
+function Bmat  = Ucompmass2 (imesh,Bvect,Cvect);
+  
+%  Bmat        = Ucompmass2 (imesh,Bvect,Cvect);
+
+
+
+% This file is part of 
+%
+%            SECS2D - A 2-D Drift--Diffusion Semiconductor Device Simulator
+%         -------------------------------------------------------------------
+%            Copyright (C) 2004-2006  Carlo de Falco
+%
+%
+%
+%  SECS2D 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.
+%
+%  SECS2D 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 SECS2D; If not, see <http://www.gnu.org/licenses/>.
+
+  
+  Nnodes    =size(imesh.p,2);
+  Nelements =size(imesh.t,2);
+    
+  %%fprintf(1,'\n*--------------------*\n');
+  %%fprintf(1,'building Mass Matrix\n*');
+
+  wjacdet =imesh.wjacdet(:,:);
+  coeff   =Bvect(imesh.t(1:3,:));
+  coeffe  =Cvect(:);
+  
+                                % build local matrix   
+  Blocmat=zeros(3,Nelements);  
+  for inode=1:3
+    Blocmat(inode,:) = coeffe'.*coeff(inode,:).*wjacdet(inode,:);
+    %%fprintf(1,'----');
+  end          
+  
+  gnode=(imesh.t(1:3,:));
+  %%fprintf(1,'--');
+
+                                % assemble global matrix
+  
+  Bmat = sparse(gnode(:),gnode(:),Blocmat(:));
+
+  
+  %%fprintf(1,'----*\nDONE!\n\n\n');
+  
+
+
+