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function [stk,txt,top]=sci_dlsim()
// Copyright INRIA
txt=[]
if rhs>3 then // DLSIM(A,B,C,D,U [,X0])
A=stk(top-rhs+1)(1);na=stk(top-rhs+1)(4)
B=stk(top-rhs+2)(1)
C=stk(top-rhs+3)(1)
D=stk(top-rhs+4)(1)
nin=stk(top-rhs+4)(4)
nt=stk(top-rhs+4)(3)
U=stk(top-rhs+5)(1);U='('+U+').'''
nu=stk(top-rhs+5)(3)
if lhs==1 then
if rhs==5 then
Y='('+C+'* ltitr'+rhsargs([A,B,U])+' + '+D+' * '+U+').'''
else
X0=stk(top)(1)
Y='('+C+'* ltitr'+rhsargs([A,B,U,X0])+' + '+D+' * '+U+').'''
end
stk=list(Y,'0',nt,nu,'1')
else
[Y,X]=lhsvarsnames()
if rhs==5 then
txt=X+' = ltitr'+rhsargs([A,B,U])
else
X0=stk(top)(1)
txt=X+' = ltitr'+rhsargs([A,B,U,X0])
end
txt=[txt;Y+' = ('+C+' * '+X+' + '+D+' * '+U+').'';'
X+' = '+X+'.'';']
stk=list(list('?','-2',nt,nu,'?'),list('?','-2',nt,na,'?'))
end
else //DLSIM(NUM,DEN,U)
NUM=stk(top-rhs+1)(1)
DEN=stk(top-rhs+2)(1)
U=stk(top-rhs+3)(1);nt=stk(top-rhs+2)(3)
if lhs>1 then
set_infos(['Dlsim with polynomial input and 2 output not translated';
'matlab syntax used'] ,2)
[Y,X]=lhsvarsnames()
txt=[txt;'['+Y+','+X+'] = dlsim'+rhsargs([NUM,DEN,U])]
out=list('?','-2','1',nt,'1')
stk=list(out,out)
else
U='('+U+').'''
stk=list('rtitr'+rhsargs([NUM,DEN,U])+'.''','0',nt,'1','1')
end
end
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