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// Scicos
//
// Copyright (C) INRIA - METALAU Project <scicos@inria.fr>
//
// This program 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.
//
// This program 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 this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// See the file ../license.txt
//
function [x,y,typ]=INTEGRAL(job,arg1,arg2)
x=[];
y=[];
typ=[];
select job
case "set" then
x=arg1;
graphics=arg1.graphics;
exprs=graphics.exprs
model=arg1.model;
while %t do
[ok,x0,reinit,satur,maxp,lowp,exprs]=scicos_getvalue("Set Integral block parameters",..
["Initial Condition";
"With re-intialization (1:yes, 0:no)";"With saturation (1:yes, 0:no)";
"Upper limit";"Lower limit"],..
list("vec",-1,"vec",1,"vec",1,"vec",-1,"vec",-1),exprs)
if ~ok then
break,
end
x0=x0(:);
maxp=maxp(:),
lowp=lowp(:)
if reinit<>0 then
reinit=1;
end
if satur<>0 then
satur=1;
if size(maxp,"*")==1 then
maxp=maxp*ones(x0),
end
if size(lowp,"*")==1 then
lowp=lowp*ones(x0),
end
if (size(x0,1)<>size(maxp,1) | size(x0,1)<>size(lowp,1)) then
message("x0 and Upper limit and Lower limit must have same size")
ok=%f
elseif or(maxp<=lowp) then
message("Upper limits must be > Lower limits")
ok=%f
elseif or(x0>maxp)|or(x0<lowp) then
message("Initial condition x0 should be inside the limits")
ok=%f
else
rpar=[maxp;lowp]
model.nzcross=size(x0,1)
model.nmode=size(x0,1)
end
else
rpar=[]
model.nzcross=0
model.nmode=0
end
if ok then
model.rpar=rpar
model.state=x0
[model,graphics,ok]=check_io(model,graphics,..
size(x0,1)*[1;ones(reinit,1)],size(x0,1),ones(reinit,1),[])
end
if ok then
graphics.exprs=exprs
x.graphics=graphics;
x.model=model
break
end
end
case "define" then
maxp=1;minp=-1;rpar=[]
model=scicos_model()
model.state=0
model.sim=list("integral_func",4)
model.in=1
model.out=1
model.rpar=rpar
model.blocktype="c"
model.dep_ut=[%f %t]
exprs=string([0;0;0;maxp;minp])
gr_i=[]
x=standard_define([2 2],model,exprs,gr_i)
x.graphics.id="1/s"
end
endfunction
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