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|
subroutine matimp
c ====================================================================
c
c simulation de systeme algebrico-differentiel
c
c ====================================================================
c
INCLUDE '../stack.h'
c
character*6 namadd,namres,namjac
common/cadd/namadd
common/cres/namres
common/cjac/namjac
integer iadr,sadr
c
double precision atol,rtol,t0,t1,tj,tf,tf1
integer top2,tope,hsize
logical jaco,type,achaud
external bresid,badd,bj2
external fres,fadda,fj2
integer adams,raide
integer info(15)
logical hotstart
double precision tout,tstop,maxstep,stepin
character*6 namer,namej,names
common /dassln/ namer,namej,names
external bresd,bjacd
common/ierode/iero
c
data atol/1.d-7/,rtol/1.d-9/
data adams/10/,raide/27/
c
iadr(l)=l+l-1
sadr(l)=(l/2)+1
c
c impl dassl dasrt
c 1 2 3
c
if (ddt .eq. 4) then
write(buf(1:4),'(i4)') fin
call basout(io,wte,' matimp '//buf(1:4))
endif
c
goto(10,100,1000) fin
c
10 if(rhs.lt.6) then
call error(39)
return
endif
if(lhs.ne.1.and.lhs.ne.3) then
call error(39)
return
endif
c
iero=0
c
c lw=premiere case libre dans la pile
itype=raide
tope=top
lw=lstk(top+1)
lw1=lw
lw=lw+16
c
c test demarrage a chaud
ifin=iadr(lstk(top))
achaud=istk(ifin).eq.1
if(achaud) then
c ilc=adresse de iw
top=top-2
il=iadr(lstk(top+2))
if(istk(il).ne.1) then
err=rhs-2
call error(53)
return
endif
liwp=istk(il+2)*istk(il+1)
lci=sadr(il+4)
ilc=iadr(lci)
c lc=adresse de w
il=iadr(lstk(top+1))
if(istk(il).ne.1) then
err=rhs-1
call error(53)
return
endif
lc=sadr(il+4)
lrwp=istk(il+1)*istk(il+2)
endif
top2=top-rhs+1
if(achaud) top2=top2+2
ile=iadr(lstk(top2))
type=istk(ile).eq.10
if(type) then
c type fourni: mf=10 dans lsodi si adams
top2=top2+1
itype=abs(istk(ile+6))
if(itype.ne.adams.and.itype.ne.raide) then
call error(42)
return
endif
endif
c type non fourni methode raide a priori
ilj=iadr(lstk(top))
islj=istk(ilj)
tj=stk(sadr(ilj+4))
if(islj.lt.10.or.islj.gt.15.or.islj.eq.12) then
err=rhs-(tope-top)
call error(44)
return
endif
ilf1=iadr(lstk(top-1))
islf1=istk(ilf1)
tf1=stk(sadr(ilf1+4))
if(islf1.lt.10.or.islf1.gt.15.or.islf1.eq.12) then
err=rhs-(tope-top)
call error(44)
return
endif
ilf=iadr(lstk(top-2))
islf=istk(ilf)
tf=stk(sadr(ilf+4))
if(islf.lt.10.or.islf.gt.15.or.islf.eq.12) then
c jacobien non fourni
jaco=.false.
kytop=top
jt=2
c mf= 12 ou 22: jacobien non fourni a lsodi
if(itype.eq.adams) mf=12
if(itype.eq.raide) mf=22
il=iadr(lstk(top))
kf1=top
kf=top-1
jobj=1
jobf=1
ilf=ilf1
islf=islf1
ilf1=ilj
islf1=islj
if(islf.eq.10) jobf=3
else
c jacobien fourni
jaco=.true.
jt=1
kytop=top-1
c mf=21: jacobien fourni a lsodi
if(itype.eq.adams) mf=11
if(itype.eq.raide) mf=21
kjac=top
kf=top-2
kf1=top-1
jobj=0
jobf=0
if(islj.ge.11) jobj=1
if(islj.eq.10) jobj=3
if(islf.ge.11.and.islf1.ge.11) jobf=1
if(islf.eq.10.and.islf1.eq.10) jobf=3
if(jobf.eq.0.or.jobj.eq.0) then
call error(42)
return
endif
endif
c jobj et jobf sont initialises
c jobf et jobj valent 2 ou 3
c
if(jobj.eq.3) then
ncj=istk(ilj+5)-1
namjac=' '
call cvstr(ncj,istk(ilj+6),namjac,1)
endif
c
if(jobf.eq.3) then
ncf=istk(ilf+5)-1
ncf1=istk(ilf1+5)-1
namres=' '
call cvstr(ncf,istk(ilf+6),namres,1)
namadd=' '
call cvstr(ncf1,istk(ilf1+6),namadd,1)
endif
c
c jaco,type et mf sont initialises...
c top2 pointe sur y0
c
c y0
kynew=top2
il=iadr(lstk(top2))
c
if(istk(il).eq.1) then
hsize=4
ny=istk(il+1)*istk(il+2)*(istk(il+3)+1)
elseif(istk(il).eq.2) then
mn=istk(il+1)*istk(il+2)
hsize=9+mn
ny=(istk(il+8+mn)-1)*(istk(il+3)+1)
else
err=rhs-(tope-top2)
call error(44)
return
endif
it=istk(il+3)
if(it.eq.1) nys2=ny/2
ly=sadr(il+hsize)
c
c y0dot
top2=top2+1
kydtop=top2
il=iadr(lstk(top2))
c
if(istk(il).eq.1) then
lyd=sadr(il+4)
nny=istk(il+1)*istk(il+2)*(istk(il+3)+1)
elseif(istk(il).eq.2) then
mn=istk(il+1)*istk(il+2)
lyd=iadr(il+9+mn)
nny=(istk(il+8+mn)-1)*(istk(il+3)+1)
else
err=rhs-(tope-top2)
call error(44)
return
endif
if(nny.ne.ny) then
call error(60)
return
endif
c
c t0
top2=top2+1
kttop=top2
il=iadr(lstk(top2))
if(istk(il).ne.1) then
err=rhs-(tope-top2)
call error(53)
return
endif
l=sadr(il+4)
t0=stk(l)
c t1
top2=top2+1
il=iadr(lstk(top2))
if(istk(il).ne.1) then
err=rhs-(tope-top2)
call error(53)
return
endif
nn=istk(il+1)*istk(il+2)
c nn=nombre de points demandes
lt1=sadr(il+4)
c
c parametres optionnels rtol et atol
top2=top2+1
rtol=1.0d-7
atol=1.0d-9
nr=1
na=1
jobtol=kytop-top2
c jobtol=(rien,rtol seul,rtol et atol)
c
if(jobtol.eq.1) then
c tolerances par defaut
lr=lw
la=lr+1
stk(la)=atol
stk(lr)=rtol
else
c rtol fourni
lr=lw
c rtol
il=iadr(lstk(top2))
if(istk(il).ne.1) then
err=rhs-(tope-top2)
call error(53)
return
endif
nr=istk(il+1)*istk(il+2)
if(nr.ne.1.and.nr.ne.ny) then
err=rhs-(tope-top2)
call error(89)
return
endif
lrt=sadr(il+4)
call dcopy(nr,stk(lrt),1,stk(lr),1)
la=lr+nr
c atol
if(jobtol.eq.2) then
stk(la)=atol
else
top2=top2+1
il=iadr(lstk(top2))
if(istk(il).ne.1) then
err=rhs-(tope-top2)
call error(53)
return
endif
na=istk(il+1)*istk(il+2)
if(na.ne.1.and.na.ne.ny) then
err=rhs-(tope-top2)
call error(89)
return
endif
lat=sadr(il+4)
call dcopy(na,stk(lat),1,stk(la),1)
endif
endif
c
lw=la+na
c top pointe sur sa valeur a l'entree
c
if(nr.eq.1.and.na.eq.1) itol=1
if(nr.eq.1.and.na.gt.1) itol=2
if(nr.gt.1.and.na.eq.1) itol=3
if(nr.gt.1.and.na.gt.1) itol=4
c
c parametres supplementaires
itask=1
istate=1
iopt=0
c
c demarrage a chaud
c
if(achaud) then
istate=2
c restauration des commons
lsavs=lc+lrwp-219
lsavi=lci+liwp-41
liwp1=liwp-41
call rscom1(stk(lsavs),stk(lsavi))
c restauration du tableau entier
do 40 k=1,liwp1
istk(ilc+k-1)=int(stk(lci+k-1))
40 continue
endif
c
c calcul des pointeurs ili,lyp
c tableaux de travail:w reel debut lw taille lrw
c w entier debut ili (pile istk) taille liw entiers
c lsodi
if(mf.gt.10) lrw=22+16*ny+ny*ny
if(mf.gt.20) lrw=22+9*ny+ny*ny
liw=20+ny
nsizd=219
nsizi=41
if(lhs.gt.1) then
lrw=lrw+nsizd
liw=liw+nsizi
endif
li=lw+lrw
ili=iadr(li)
lyp=li+liw
c top pointe sur la zone de travail
top=top+1
lstk(top+1)=lw+lrw+liw+nn*ny
err=lstk(top+1)-lstk(bot)
if(err.gt.0) then
call error(17)
return
endif
c
if(jaco) then
ilw1=iadr(lw1)
istk(ilw1)=3
istk(ilw1+1)=ilw1+4
istk(ilw1+2)=ilw1+8
istk(ilw1+3)=ilw1+12
istk(ilw1+4)=kf
istk(ilw1+5)=kttop
istk(ilw1+6)=kynew
istk(ilw1+7)=kydtop
istk(ilw1+8)=kf1
istk(ilw1+9)=kttop
istk(ilw1+10)=kynew
istk(ilw1+11)=kydtop
istk(ilw1+12)=kjac
istk(ilw1+13)=kttop
istk(ilw1+14)=kynew
istk(ilw1+15)=kydtop
else
ilw1=iadr(lw1)
istk(ilw1)=2
istk(ilw1+1)=ilw1+3
istk(ilw1+2)=ilw1+7
istk(ilw1+3)=kf
istk(ilw1+4)=kttop
istk(ilw1+5)=kynew
istk(ilw1+6)=kydtop
istk(ilw1+7)=kf1
istk(ilw1+8)=kttop
istk(ilw1+9)=kynew
istk(ilw1+10)=kydtop
endif
c
call xsetf(1)
call xsetun(wte)
c
if(.not.achaud) then
lc=lw
ilc=ili
endif
c
c appel de l'integrateur
do 50 k=1,nn
t1=stk(lt1+k-1)
c test sur le type des fonctions fournies
if(jobf.eq.1) then
if(jobj.eq.1) then
c f macro j macro
call lsodi(bresid,badd,bj2,ny,stk(ly),stk(lyd),t0,t1,
1 itol,stk(lr),stk(la),itask,istate,iopt,stk(lc),lrw,
2 istk(ilc),liw,mf)
else
c f macro j fortran
call lsodi(bresid,badd,fj2,ny,stk(ly),stk(lyd),t0,t1,
1 itol,stk(lr),stk(la),itask,istate,iopt,stk(lc),lrw,
2 istk(ilc),liw,mf)
endif
else
if(jobj.eq.1) then
c f fortran j macro
call lsodi(fres,fadda,bj2,ny,stk(ly),stk(lyd),t0,t1,
1 itol,stk(lr),stk(la),itask,istate,iopt,stk(lc),lrw,
2 istk(ilc),liw,mf)
else
c f fortran j fortran
call lsodi(fres,fadda,fj2,ny,stk(ly),stk(lyd),t0,t1,
1 itol,stk(lr),stk(la),itask,istate,iopt,stk(lc),lrw,
2 istk(ilc),liw,mf)
endif
endif
if(err.gt.0) return
if(istate.lt.0) then
call error(24)
return
endif
if(it.eq.0) then
lys=lyp+(k-1)*ny
call dcopy(ny,stk(ly),1,stk(lys),1)
else
lys=lyp+(k-1)*nys2
call dcopy(nys2,stk(ly),1,stk(lys),1)
call dcopy(nys2,stk(ly+nys2),1,stk(lys+nn*nys2),1)
endif
50 continue
c
c sortie des resultats
ils=iadr(lstk(kynew))
top=tope-rhs+1
call icopy(hsize,istk(ils),1,istk(ile),1)
nel=istk(ile+1)*istk(ile+2)
istk(ile+2)=istk(ile+2)*nn
ly=sadr(ile+hsize)
if(istk(ile).eq.2) ly=sadr(ile+9+nel*nn)
inc=1
if(ly.gt.lyp) inc=-1
call dcopy(ny*nn,stk(lyp),inc,stk(ly),inc)
lstk(top+1)=ly+ny*nn
if(istk(ile).eq.2) then
c on defini la table des pointeurs
il=ile+7
do 52 i=2,nn
do 51 j=1,nel
istk(il+nel+j+1)=istk(ile+8+j)-1+istk(il+nel+1)
51 continue
il=il+nel
52 continue
endif
if(lhs.eq.1) return
c w
top=top+1
il=iadr(lstk(top))
istk(il)=1
istk(il+1)=1
istk(il+2)=lrw
istk(il+3)=0
l=sadr(il+4)
lstk(top+1)=l+lrw
call dcopy(lrw-nsizd,stk(lc),1,stk(l),1)
lsvs=l+lrw-nsizd
c iw
top=top+1
il=iadr(lstk(top))
istk(il)=1
istk(il+1)=1
istk(il+2)=liw
istk(il+3)=0
l=sadr(il+4)
lstk(top+1)=l+liw
do 60 k=1,liw-nsizi
stk(l+k-1)=dble(istk(ilc+k-1))
60 continue
lsvi=l+liw-nsizi
call svcom1(stk(lsvs),stk(lsvi))
c fin de impl...
c
fin=2
return
c
cc dassl
c
100 continue
c
c SCILAB function : dassl
c --------------------------
c [y0 [,hotdata]]=dassl(y0,t0,t1 [,atol,rtol],res [,jac],info..
c [,hotdata])
iero=0
maxord=5
lbuf = 1
lw = lstk(top+1)
l0 = lstk(top+1-rhs)
if (rhs .lt. 5 .or. rhs .gt.9) then
call error(39)
return
endif
if (lhs .ne. 2 .and. lhs .ne. 1) then
call error(41)
return
endif
c checking variable y0 (number 1)
c
ky=top-rhs+1
il1 = iadr(lstk(top-rhs+1))
if (istk(il1) .ne. 1) then
err = 1
call error(53)
return
endif
n1 = istk(il1+1)
neq=n1
m1 = istk(il1+2)
l1 = sadr(il1+4)
lydot=l1+n1
info(11)=0
if (m1 .eq.1) then
lydot=lw
lw=lw+n1
err=lw-lstk(bot)
if(err.gt.0) then
call error(17)
return
endif
info(11)=1
call dset(n1,0.0d0,stk(lydot),1)
elseif(m1.ne.2) then
err = 1
call error(89)
return
else
istk(il1+2)=1
endif
c checking variable t0 (number 2)
c
kt0=top-rhs+2
il2 = iadr(lstk(top-rhs+2))
if (istk(il2) .ne. 1) then
err = 2
call error(53)
return
endif
if (istk(il2+1)*istk(il2+2) .ne. 1) then
err = 2
call error(89)
return
endif
t0 = stk(sadr(il2+4))
c checking variable t1 (number 3)
c
il3 = iadr(lstk(top-rhs+3))
if (istk(il3) .ne. 1) then
err = 3
call error(53)
return
endif
m3 = istk(il3+1)*istk(il3+2)
nt=m3
l3 = sadr(il3+4)
c
c checking variable atol (number 4)
c
iskip=0
il4 = iadr(lstk(top-rhs+4))
if (istk(il4) .ne. 1) then
latol=lw
lrtol=lw+1
lw=lw+2
stk(latol)=atol
stk(lrtol)=rtol
info(2)=0
iskip=iskip+2
goto 105
endif
m4 = istk(il4+1)*istk(il4+2)
l4 = sadr(il4+4)
latol=l4
if(m4.ne.1.and.m4.ne.n1) then
err=4
call error(89)
return
endif
c checking variable rtol (number 5)
c
il5 = iadr(lstk(top-rhs+5))
if (istk(il5) .ne. 1) then
lrtol=lw
lw=lw+1
stk(lrtol)=1.0d-7
info(2)=0
iskip=iskip+1
goto 105
endif
m5 = istk(il5+1)*istk(il5+2)
l5 = sadr(il5+4)
lrtol=l5
if(m5.ne.m4) then
call error(60)
return
endif
if(m5.eq.1) then
info(2)=0
else
info(2)=1
endif
c checking variable res (number 6)
c
105 kres=top-rhs+6-iskip
il6=iadr(lstk(kres))
if (istk(il6) .eq. 10) then
if (istk(il6+1)*istk(il6+2) .ne. 1) then
err = 6-iskip
call error(89)
return
endif
n6 = min(istk(il6+5)-1,6)
l6 = il6+6
namer=' '
call cvstr(n6,istk(l6),namer,1)
endif
c checking variable jac (number 7)
c
kjac=top-rhs+7-iskip
il7=iadr(lstk(kjac))
if(kjac.eq.top.or.
$ kjac.eq.top-1.and.istk(iadr(lstk(top))).eq.1) then
iskip=iskip+1
info(5)=0
else
info(5)=1
if (istk(il7) .eq. 10) then
if (istk(il7+1)*istk(il7+2) .ne. 1) then
err = 7-iskip
call error(89)
return
endif
n7 = min(istk(il7+5)-1,6)
l7 = il7+6
namej=' '
call cvstr(n7,istk(l7),namej,1)
endif
endif
c
c checking variable info (number 8)
c
il8 = iadr(lstk(top-rhs+8-iskip))
if (istk(il8) .ne. 15) then
err = 8-iskip
call error(56)
return
endif
n8=istk(il8+1)
l8=sadr(il8+n8+3)
c
c -- subvariable tstop(info) --
il8e1=iadr(l8+istk(il8+1+1)-1)
l8e1 = sadr(il8e1+4)
m8e1 = istk(il8e1+1)*istk(il8e1+2)
if(m8e1.eq.0) then
info(4)=0
else
info(4)=1
tstop=stk(l8e1)
endif
c
c -- subvariable imode(info) --
il8e2=iadr(l8+istk(il8+1+2)-1)
l8e2 = sadr(il8e2+4)
info(3)=stk(l8e2)
c
c -- subvariable band(info) --
il8e3=iadr(l8+istk(il8+1+3)-1)
m8e3 =istk(il8e3+2)*istk(il8e3+2)
l8e3 = sadr(il8e3+4)
if(m8e3.eq.0) then
info(6)=0
elseif(m8e3.eq.2) then
info(6)=1
ml=stk(l8e3)
mu=stk(l8e3+1)
else
err=8-iskip
call error(89)
return
endif
c
c -- subvariable maxstep(info) --
il8e4=iadr(l8+istk(il8+1+4)-1)
m8e4 =istk(il8e4+2)*istk(il8e4+2)
l8e4 = sadr(il8e4+4)
if(m8e4.eq.0) then
info(7)=0
else
info(7)=1
maxstep=stk(l8e4)
endif
c
c -- subvariable stepin(info) --
il8e5=iadr(l8+istk(il8+1+5)-1)
m8e5 =istk(il8e5+2)*istk(il8e5+2)
l8e5 = sadr(il8e5+4)
if(m8e5.eq.0) then
info(8)=0
else
info(8)=1
stepin=stk(l8e5)
endif
c
c -- subvariable nonneg(info) --
il8e6=iadr(l8+istk(il8+1+6)-1)
l8e6 = sadr(il8e6+4)
info(10)=stk(l8e6)
c
c -- subvariable isest(info) --
il8e7=iadr(l8+istk(il8+1+7)-1)
l8e7 = sadr(il8e7+4)
isest=stk(l8e7)
if(isest.eq.1) info(11)=1
hotstart=.false.
if(rhs.eq.9-iskip) then
hotstart=.true.
c
c checking variable hotdata (number 9)
c
il9 = iadr(lstk(top-rhs+9-iskip))
if (istk(il9) .ne. 1) then
err = 9-iskip
call error(53)
return
endif
n9 = istk(il9+1)*istk(il9+2)
lhot = sadr(il9+4)
elseif(rhs.ne.8-iskip) then
call error(39)
return
endif
c
c cross formal parameter checking
c not implemented yet
c
c cross equal output variable checking
c not implemented yet
c
nn15=0
lw15=lw
lw=lw+nn15
lw17=lw
lw=lw+nn15
if(info(6).eq.0) then
C for the full (dense) JACOBIAN case
lrw = 40+(maxord+4)*neq+neq**2
elseif(info(5).eq.1) then
C for the banded user-defined JACOBIAN case
lrw=40+(maxord+4)*neq+(2*ml+mu+1)*neq
elseif(info(5).eq.0) then
C for the banded finite-difference-generated JACOBIAN case
lrw = 40+(maxord+4)*neq+(2*ml+mu+1)*neq+2*(neq/(ml+mu+1)+1)
endif
liw=20+neq
if(.not.hotstart) then
lrwork=lw
lw=lrwork+lrw
liwork=lw
lw=liwork+sadr(liw)+1
else
if(lrw+liw.gt.n9) then
err=9-iskip
call error(89)
return
endif
lrwork=lhot
liwork=lhot+lrw
call entier(liw,stk(liwork),istk(iadr(liwork)))
endif
err=lw-lstk(bot)
if (err .gt. 0) then
call error(17)
return
endif
c
if(info(4).eq.1) then
stk(lrwork)=tstop
endif
if(info(7).eq.1) then
stk(lrwork+1)=maxstep
endif
if(info(8).eq.1) then
stk(lrwork+2)=stepin
endif
if(info(6).eq.1) then
istk(iadr(liwork))=ml
istk(iadr(liwork+1))=mu
endif
c structure d'info pour les externals
top=top+1
lstk(top)=lw
ilext=iadr(lw)
istk(ilext)=2
istk(ilext+1)=ilext+4
istk(ilext+2)=ilext+8
istk(ilext+3)=ilext+12
istk(ilext+4)=kres
istk(ilext+5)=neq
istk(ilext+6)=kt0
istk(ilext+7)=ky
istk(ilext+8)=kjac
istk(ilext+9)=neq
istk(ilext+10)=kt0
istk(ilext+11)=ky
lw=sadr(ilext)+12
lw0=lw
ilyr=iadr(lw)
istk(ilyr)=1
istk(ilyr+1)=2*n1+1
istk(ilyr+3)=0
lyr=sadr(ilyr+4)
lyri=lyr-(2*n1+1)
k=0
info(1)=0
if(hotstart) info(1)=1
info(9)=0
do 120 i=0,nt-1
tout=stk(l3+i)
c
115 k=k+1
lyri=lyri+(2*n1+1)
lw=lyri+(2*n1+1)
lstk(top+1)=lw
margin=(k-1)*(2*n1+1)+4
lw1=lw+margin
if(lhs.eq.2) lw1=lw1+4+lrw+liw
if(lw1-lstk(bot).gt.0) then
c not enough memory
call msgstxt('Not enough memory to go further')
k=k-1
goto 125
endif
stk(lyri)=tout
call dcopy(n1,stk(l1),1,stk(lyri+1),1)
call dcopy(n1,stk(lydot),1,stk(lyri+n1+1),1)
l1=lyri+1
lydot=lyri+n1+1
call ddassl(bresd,n1,t0,stk(l1),stk(lydot),
& stk(lyri),info,stk(lrtol),stk(latol),idid,
& stk(lrwork),lrw,istk(iadr(liwork)),liw,stk(lw15),
& stk(lw17),bjacd)
if(err.gt.0) return
if(idid.eq.1) then
C A step was successfully taken in the intermediate-output mode.
C The code has not yet reached TOUT.
stk(lyri)=t0
info(1)=1
goto 115
elseif(idid.eq.2) then
C The integration to TSTOP was successfully completed (T=TSTOP)
goto 125
elseif(idid.eq.3) then
C The integration to TOUT was successfully completed (T=TOUT) by
C stepping past TOUT. Y,ydot are obtained by interpolation.
t0=tout
info(1)=1
goto 120
elseif(idid.eq.-1) then
C A large amount of work has been expended (About 500 steps)
call msgstxt('to many steps necessary to reached next '//
& 'required time discretization point')
call msgstxt('Change discretisation of time vector t '//
& 'or decrease accuracy')
stk(lyri)=t0
goto 125
elseif(idid.eq.-2) then
C The error tolerances are too stringent.
t0=tout
info(1)=1
goto 115
c buf='The error tolerances are too stringent'
c call error(9982)
c return
elseif(idid.eq.-3) then
C The local error test cannot be satisfied because you specified
C a zero component in ATOL and the corresponding computed solution
C component is zero. Thus, a pure relative error test is impossible
C for this component.
buf='atol and computed test value are zero'
call error(9983)
return
elseif(idid.eq.-6) then
C repeated error test failures on the last attempted step.
call msgstxt('A singularity in the solution '//
& 'may be present')
goto 125
elseif(idid.eq.-7) then
C The corrector could not converge.
call msgstxt('May be inaccurate or ill-conditioned '//
& 'JACOBIAN')
goto 125
elseif(idid.eq.-8) then
C The matrix of partial derivatives is singular.
buf='Singular partial derivatives matrix'//
& ' (may be redundant equations)'
call error(9986)
return
elseif(idid.eq.-9) then
C The corrector could not converge. there were repeated error
c test failures in this step.
call msgstxt('Either ill-posed problem or '//
& 'discontinuity or singularity encountered')
goto 125
elseif(idid.eq.-10) then
call msgstxt('external ''res'' return many times'//
& ' with ires=-1')
goto 125
elseif(idid.eq.-11) then
C IRES equal to -2 was encountered and control is being returned to the
C calling program.
buf='error in external ''res'' '
call error(9989)
return
elseif(idid.eq.-12) then
C DDASSL failed to compute the initial YPRIME.
buf='dassl failed to compute the initial Ydot.'
call error(9990)
return
elseif(idid.eq.-33) then
C The code has encountered trouble from which
C it cannot recover. A message is printed
C explaining the trouble and control is returned
C to the calling program. For example, this occurs
C when invalid input is detected.
call msgstxt('dassl encountered trouble')
goto 125
endif
t0=tout
info(1)=1
120 continue
c
125 top=top-rhs-1
mv=lw0-l0
c
c Variable de sortie: y0
c
top=top+1
if(k.eq.0) istk(ilyr+1)=0
istk(ilyr+2)=k
lw=lyr+(2*n1+1)*k
lstk(top+1)=lw-mv
if(lhs.eq.1) goto 150
c
c Variable de sortie: rwork
c
top=top+1
ilw=iadr(lw)
err=lw+4+lrw+liw-lstk(bot)
if (err .gt. 0) then
call error(17)
return
endif
istk(ilw)=1
istk(ilw+1)=lrw+liw
istk(ilw+2)=1
istk(ilw+3)=0
lw=sadr(ilw+4)
call dcopy(lrw,stk(lrwork),1,stk(lw),1)
call int2db(liw,istk(iadr(liwork)),1,stk(lw+lrw),1)
lw=lw+lrw+liw
lstk(top+1)=lw-mv
c
c Remise en place de la pile
150 call dcopy(lw-lw0,stk(lw0),1,stk(l0),1)
return
1000 continue
call dasrti
return
c
end
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