Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / secs1d-0.0.8 / Utilities / Ucompmass.m

diff --git a/octave_packages/secs1d-0.0.8/Utilities/Ucompmass.m b/octave_packages/secs1d-0.0.8/Utilities/Ucompmass.m
new file mode 100644 (file)
index 0000000..6374cbf
--- /dev/null
+++ b/octave_packages/secs1d-0.0.8/Utilities/Ucompmass.m
@@ -0,0 +1,34 @@
+function Bmat  = Ucompmass (nodes,Nnodes,elements,Nelements,Bvect,Cvect);
+  
+% Bmat = Ucompmass (nodes,Nnodes,elements,Nelements,Bvect,Cvect);
+  
+ ## This file is part of 
+  ##
+  ## SECS1D - A 1-D Drift--Diffusion Semiconductor Device Simulator
+  ## -------------------------------------------------------------------
+  ## Copyright (C) 2004-2007  Carlo de Falco
+  ##
+  ##
+  ##
+  ##  SECS1D 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.
+  ##
+  ##  SECS1D 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 SECS1D; If not, see <http://www.gnu.org/licenses/>.  
+  
+  h    = (nodes(2:end)-nodes(1:end-1)).*Cvect;
+  d0   = Bvect.*[h(1)/2; (h(1:end-1)+h(2:end))/2; h(end)/2];
+  Bmat  = spdiags(d0, 0, Nnodes,Nnodes);
+  
+  
+  % Last Revision:
+  % $Author: adb014 $
+  % $Date: 2008-02-04 16:26:27 +0100 (man, 04 feb 2008) $
+