Add a useful package (from Source forge) for octave

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

diff --git a/octave_packages/secs2d-0.0.8/Utilities/Ucomplap.m b/octave_packages/secs2d-0.0.8/Utilities/Ucomplap.m
new file mode 100644 (file)
index 0000000..eeb2824
--- /dev/null
+++ b/octave_packages/secs2d-0.0.8/Utilities/Ucomplap.m
@@ -0,0 +1,57 @@
+function L = Ucomplap (mesh,coeff)
+  
+                                % L = Ufastcomplap (mesh,coeff)
+
+
+% 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 = length(mesh.p);
+  Nelements = length(mesh.t);
+  
+  %%fprintf(1,'*--------------------*\n');
+  %%fprintf(1,'building Stiffness Matrix\n*');
+  
+  areak   = reshape(sum( mesh.wjacdet,1),1,1,Nelements);
+  shg     = mesh.shg(:,:,:);
+  M       = reshape(coeff,1,1,Nelements);
+  
+                                % build local matrix   
+  Lloc=zeros(3,3,Nelements);   
+  for inode=1:3
+    for jnode=1:3
+      
+      Lloc(inode,jnode,:) = M .* sum( shg(:,inode,:) .* shg(:,jnode,:),1) .* areak;
+      %%fprintf(1,'-');
+      
+      ginode(inode,jnode,:)=mesh.t(inode,:);
+      gjnode(inode,jnode,:)=mesh.t(jnode,:);
+      
+      %%fprintf(1,'-');
+      
+    end
+  end          
+  
+  L = sparse(ginode(:),gjnode(:),Lloc(:));
+  %%fprintf(1,'--*\nDONE!\n\n\n');
+  
+