/usr/share/octave/packages/secs2d-0.0.8/Utilities/Ufvsgcurrent.m is in octave-secs2d 0.0.8-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 | function [jx,jy]=Ufvsgcurrent(omesh,n,psi,psith,coeffe);
% [jx,jy]=Udrawcurrent(omesh,n,psi,psith,coeffe);
% 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/>.
Nelem = size(omesh.t,2);
jx = NaN*ones(Nelem,1);
jy = jx;
for iel=1:Nelem
K = sum(omesh.wjacdet(:,iel));
dpsi1 = psi(omesh.t(3,iel))-psi(omesh.t(2,iel));
dvth1 = psith(omesh.t(3,iel))-psith(omesh.t(2,iel));
vthm1 = Utemplogm(psith(omesh.t(3,iel)),psith(omesh.t(2,iel)));
[bp,bn] = Ubern((dpsi1-dvth1)/vthm1);
t1 = omesh.p(:,omesh.t(3,iel))-omesh.p(:,omesh.t(2,iel));
l1 = norm(t1,2);
t1 = t1/l1;
j1 = vthm1*(coeffe(iel)/l1) * ( n(omesh.t(3,iel)) * bp - ...
n(omesh.t(2,iel)) * bn) * t1;
gg1= omesh.shg(:,2,iel)'*omesh.shg(:,3,iel)*l1^2;
dpsi2 = psi(omesh.t(1,iel))-psi(omesh.t(3,iel));
dvth2 = psith(omesh.t(1,iel))-psith(omesh.t(3,iel));
vthm2 = Utemplogm(psith(omesh.t(1,iel)),psith(omesh.t(3,iel)));
[bp,bn] = Ubern((dpsi2-dvth2)/vthm2);
t2 = omesh.p(:,omesh.t(1,iel))-omesh.p(:,omesh.t(3,iel));
l2 = norm(t2,2);
t2 = t2/l2;
j2 = vthm2*(coeffe(iel)/l2) * ( n(omesh.t(1,iel)) * bp - ...
n(omesh.t(3,iel)) * bn) * t2;
gg2= omesh.shg(:,1,iel)'*omesh.shg(:,3,iel)*l2^2;
dpsi3 = psi(omesh.t(2,iel))-psi(omesh.t(1,iel));
dvth3 = psith(omesh.t(2,iel))-psith(omesh.t(1,iel));
vthm3 = Utemplogm(psith(omesh.t(2,iel)),psith(omesh.t(1,iel)));
[bp,bn] = Ubern((dpsi3-dvth3)/vthm3);
t3 = omesh.p(:,omesh.t(2,iel))-omesh.p(:,omesh.t(1,iel));
l3 = norm(t3,2);
t3 = t3/l3;
j3 = vthm3*(coeffe(iel)/l3) * ( n(omesh.t(2,iel)) * bp - ...
n(omesh.t(1,iel)) * bn) * t3;
gg3= omesh.shg(:,2,iel)'*omesh.shg(:,1,iel)*l3^2;
Jk = j1*gg1+j2*gg2+j3*gg3;
jx(iel) = Jk(1);
jy(iel) = Jk(2);
end
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