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subroutine cossim(neq,x,xptr,z,zptr,iz,izptr,told,tf,
c Copyright INRIA
$ tevts,evtspt,nevts,pointi,inpptr,inplnk,outptr,
$ outlnk,lnkptr,clkptr,ordptr,nptr,
$ ordclk,nordcl,ztyp,cord,iord,niord,oord,zord,
$ critev,rpar,rpptr,ipar,
$ ipptr,funptr,funtyp,rhot,ihot,outtb,jroot,w,iwa,ierr)
C
C
C.. Parameters ..
c maximum number of clock output for one block
integer nts
parameter (nts=100)
C
integer neq(*)
C neq must contain after #states all integer data for simblk and grblk
double precision x(*),z(*),told,tf,tevts(*),rpar(*),outtb(*)
double precision w(*),rhot(*)
integer iwa(*)
C X must contain after state values all real data for simblk and grblk
integer xptr(*),zptr(*),iz(*),izptr(*),evtspt(nevts),nevts,pointi
integer inpptr(*),inplnk(*),outptr(*),outlnk(*),lnkptr(*)
integer clkptr(*),ordptr(nptr),nptr,ztyp(*)
integer ordclk(nordcl,2),nordcl,cord(*),iord(*),oord(*),zord(*)
integer critev(*),rpptr(*),ipar(*),ipptr(*),funptr(*),funtyp(*)
integer ihot(*),jroot(*),ierr
c
logical hot,stuck
integer i,k,ierr1,iopt,istate,itask,j,jdum,jt,
& ksz,flag,keve,kpo,nord,nclock
double precision t
double precision tvec(nts)
c
external grblk,simblk
integer otimer,ntimer,stimer
external stimer
integer nblk,nordptr,nout,ng,nrwp,niwp,ncord,
& noord,nzord
common /cossiz/ nblk,nordptr,nout,ng,nrwp,niwp,ncord,
& noord,nzord
C
integer halt
common /coshlt/ halt
c
integer kfun
common /curblk/ kfun
c
double precision atol,rtol,ttol,deltat
common /costol/ atol,rtol,ttol,deltat
c
save otimer
data otimer/0/
c
ierr = 0
hot = .false.
stuck=.false.
call xscion(inxsci)
C initialization
call iset(niwp,0,ihot,1)
call dset(nrwp,0.0d0,rhot,1)
ntvec=0
c initialisation (propagation of constant blocks outputs)
if(niord.eq.0) goto 10
do 05 jj=1,niord
kfun=iord(jj)
nclock = iord(jj+niord)
flag=1
call callf(kfun,nclock,funptr,funtyp,told,x,x,xptr,z,zptr,iz,
$ izptr,rpar,rpptr,ipar,ipptr,tvec,ntvec,inpptr,inplnk
$ ,outptr,outlnk,lnkptr,outtb,flag)
if (flag .lt. 0) then
ierr = 5 - flag
return
endif
05 continue
C main loop on time
10 continue
if (told .ge. tf) return
if (inxsci.eq.1) then
ntimer=stimer()
if (ntimer.ne.otimer) then
call sxevents()
otimer=ntimer
if (halt.ne.0) then
halt=0
return
endif
endif
endif
if (pointi.eq.0) then
t = tf
else
t = tevts(pointi)
endif
if (abs(t-told) .lt. ttol) then
t = told
C update output part
endif
if (told .gt. t) then
C ! scheduling problem
ierr = 1
return
endif
if (told .ne. t) then
if (xptr(nblk+1) .eq. 1) then
C . no continuous state
if(told+deltat+ttol.gt.t) then
told=t
else
told=told+deltat
endif
c . update outputs of 'c' type blocks
if (ncord.eq.0) goto 343
call cdoit(neq,x,xptr,z,zptr,iz,izptr,told,tf
$ ,tevts,evtspt,nevts,pointi,inpptr,inplnk,outptr
$ ,outlnk,lnkptr,clkptr,ordptr,nptr
$ ,ordclk,nordcl,cord,iord,niord,oord,zord,critev,
$ rpar,rpptr,ipar
$ ,ipptr,funptr,funtyp,outtb,w,hot,ierr)
if(ierr.ne.0) return
343 continue
C
else
C integrate
if (hot) then
istate = 2
else
istate = 1
endif
itask = 4
C Compute tcrit (rhot(1))
rhot(1)=tf+ttol
kpo=pointi
20 if(critev(kpo).eq.1) then
rhot(1)=tevts(kpo)
goto 30
endif
kpo=evtspt(kpo)
if(kpo.ne.0) goto 20
30 continue
c
c . form initial zero crossing input signs
ig=1
if (ng.gt.0) then
c . loop on zero crossing block
do 35 kfun=1,nblk
if (ztyp(kfun).eq.1) then
c . loop on block ports
do 34 kport=inpptr(kfun),inpptr(kfun+1)-1
klink=inplnk(kport)
do 33 i=lnkptr(klink),lnkptr(klink+1)-1
if (outtb(i).gt.0.d0) then
jroot(ng+ig) = 1
else
jroot(ng+ig) = 0
endif
ig=ig+1
33 continue
34 continue
endif
35 continue
endif
c
iopt = 0
c
jt = 2
t=min(told+deltat,min(t,tf+ttol))
c
c
call lsodar(simblk,neq,x,told,t,1,rtol,atol,itask,
& istate,iopt,rhot,nrwp,ihot,niwp,jdum,jt,grblk,
& ng,jroot)
if (istate .le. 0) then
if (istate .eq. -3) then
if(stuck) then
ierr= 2
return
endif
itask = 2
istate = 1
call lsoda(simblk,neq,x,told,t,
& 1,rtol,atol,itask,
& istate,iopt,rhot,nrwp,ihot,niwp,jdum,jt)
hot = .false.
stuck=.true.
if (istate .gt. 0) goto 38
endif
C ! integration problem
ierr = 100-istate
return
endif
hot = .true.
stuck=.false.
38 continue
c . update outputs of 'c' type blocks
nclock = 0
ntvec=0
if (ncord.gt.0) then
call cdoit(neq,x,xptr,z,zptr,iz,izptr,told,tf
$ ,tevts,evtspt,nevts,pointi,inpptr,inplnk,outptr
$ ,outlnk,lnkptr,clkptr,ordptr,nptr
$ ,ordclk,nordcl,cord,iord,niord,oord,zord,critev,
$ rpar,rpptr,ipar
$ ,ipptr,funptr,funtyp,outtb,w,hot,ierr)
if(ierr.ne.0) return
endif
if (istate .eq. 3) then
C . at a least one root has been found
ig = 1
do 50 kfun = 1,nblk
if (ztyp(kfun).eq.1) then
c . loop on block input ports
ksz=0
do 42 kport=inpptr(kfun),inpptr(kfun+1)-1
c . get corresponding link pointer
klink=inplnk(kport)
ksz=ksz+lnkptr(klink+1)-lnkptr(klink)
42 continue
c . kev is a base 2 coding of reached zero crossing surfaces
kev=0
do 44 j = 1,ksz
kev=2*kev+jroot(ig+ksz-j)
44 continue
jjflg=1
if (kev.eq.0) jjflg=0
do 45 j = 1,ksz
kev=2*kev+jroot(ng+ig+ksz-j)
45 continue
ig=ig+ksz
if (jjflg .ne. 0) then
flag=3
ntvec=clkptr(kfun+1)-clkptr(kfun)
c . call corresponding block to determine output event (kev)
call callf(kfun,kev,funptr,funtyp,
$ told,x,x,xptr,z,
$ zptr,iz,izptr,rpar,rpptr,ipar,ipptr,tvec,
$ ntvec,inpptr,inplnk,outptr,outlnk,lnkptr,
$ outtb,flag)
if(flag.lt.0) then
ierr=5-flag
return
endif
c . update event agenda
do 47 k=1,clkptr(kfun+1)-clkptr(kfun)
if (tvec(k).ge.told) then
if (critev(k+clkptr(kfun)-1).eq.1)
$ hot=.false.
call addevs(tevts,evtspt,nevts,pointi,
& tvec(k),k+clkptr(kfun)-1,ierr1)
if (ierr1 .ne. 0) then
C . nevts too small
ierr = 3
return
endif
endif
47 continue
endif
endif
50 continue
endif
c ! save initial signs of zero crossing surface
c
endif
else
C . t==told
call ddoit(neq,x,xptr,z,zptr,iz,izptr,told,tf,
$ tevts,evtspt,nevts,pointi,inpptr,inplnk,outptr,
$ outlnk,lnkptr,clkptr,ordptr,nptr,
$ ordclk,nordcl,cord,iord,niord,oord,zord,critev,
$ rpar,rpptr,ipar,
$ ipptr,funptr,funtyp,outtb,w,iwa,hot,ierr)
if(ierr.ne.0) return
C
endif
C end of main loop on time
goto 10
end
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