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subroutine intl_e()
c =============================================================
c extraction pour les list tlist, mlist
c =============================================================
c
c Copyright INRIA
include '../stack.h'
c
c
integer rhs1,vol1,vol2,vol
integer op,top1,top2
integer strpos
external strpos
logical ptover
integer id(nsiz)
integer iadr,sadr
c
c
iadr(l)=l+l-1
sadr(l)=(l/2)+1
c
icall=0
c
if(rstk(pt).eq.403) goto 45
if(rstk(pt).eq.405) goto 35
rhs1=rhs
top0=top
fun=0
if(rhs.gt.2) then
fin=-fin
return
endif
if(rhs.le.0) then
call error(39)
return
endif
icount=0
c arg2(arg1)
c ==========
c get arg2
10 continue
lw=lstk(top+1)
c
top2=top
c get arg1
top=top-1
top1=top
il1=iadr(lstk(top))
if(istk(il1).lt.0) il1=iadr(istk(il1+1))
if(istk(il1).eq.15.and.istk(il1+1).eq.0) then
c . arg2(list()) -->arg2
il2=iadr(lstk(top2))
if(istk(il2).lt.0) top2=istk(il2+2)
call unsfdcopy(lstk(top2+1)-lstk(top2),stk(lstk(top2)),1,
& stk(lstk(top)),1)
lstk(top+1)=lstk(top)+lstk(top2+1)-lstk(top2)
return
endif
c
ilind=iadr(lw)
if(istk(il1).ne.15) then
lw=lw+1
m1=1
else
m1=istk(il1+1)
lw=sadr(ilind+m1)
endif
c go ahead along the path
call followpath(top1,top2,il1ir,vol1,il2ir,vol2,istk(ilind),
$ icount,info,lw)
if(vol2.eq.0) then
c empty field found
err=istk(ilind-1+icount)
call error(117)
return
endif
il1i=il1ir
if(istk(il1i).lt.0) il1i=iadr(istk(il1i+1))
il2i=il2ir
if(istk(il2i).lt.0) il2i=iadr(istk(il2i+1))
if(info.eq.2.or.info.eq.4) then
c . syntax is arg2(...)(i,j,..)(...)
c . matrix index (i,..) syntax
lstk(top+2)=lw
if (istk(il1i).eq.15) then
c . more than one index
c . transform index list(i,j,...) in the list in sequence of variables
c . at the top of the stack
m1i=istk(il1i+1)
ll1=sadr(il1i+m1i+3)
top=top2+1
call unsfdcopy(istk(il1i+m1i+2)-1,stk(ll1),1,
$ stk(lstk(top)),1)
do 16 k1=1,m1i
lstk(top+1)=lstk(top)+istk(il1i+2+k1)-istk(il1i+1+k1)
top=top+1
16 continue
top=top-1
rhs=1+m1i
m2i=istk(il2i+1)
else
c . a matrix single index
c . copy it at the top of the stack (may possible to put a pointer)
top=top2
call copyvar(il1ir,vol1)
rhs=2
endif
goto 30
elseif(info.eq.3) then
c . current list index is not a single index (multiple extraction)
if(icount.ne.m1) then
c . only final index handled
call error(43)
return
endif
if(istk(il1i).eq.10) then
if(istk(il2i).ne.16.and.istk(il2i).ne.17) then
call error(21)
return
endif
c . named indexes
ilfn=iadr(sadr(il2i+istk(il2i+1)+3))
nn=istk(ilfn+1)*istk(ilfn+2)
ilptr=ilfn+5
lfn=ilfn+5+nn
ili=iadr(lw)
lw=sadr(ili+nn)
nind=istk(il1i+1)*istk(il1i+2)
do 20 k=1,nind
nname=istk(il1i+4+k)-istk(il1i+3+k)
ilname=il1i+4+nind+istk(il1i+3+k)
c . look for corresponding index if any
ipos=strpos(istk(ilptr),nn-1,istk(lfn),istk(ilname),
$ nname)
if(ipos.le.0) then
c . no such name in the field names
if(icount.eq.1.and.m1.eq.1) then
c . syntax is arg2('xxx')
fin=-fin
top=top2
rhs1=rhs
return
else
c . syntax is arg2(...)('xxx')(...)
c . set the index
top=top2
call copyvar(il1ir,vol1)
rhs=2
goto 30
endif
else
istk(ili+k-1)=ipos+1
endif
20 continue
call extractfields(il2i,istk(ili),nind,lw)
else
m2i=istk(il2i+1)
call indxg(il1i,m2i,ili,n,mx,lw,10)
call extractfields(il2i,istk(ili),n,lw)
endif
return
elseif(info.eq.5) then
c . end of arg1 list reached
c . copy the designed sublist at the top of the stack
top=top-1
call copyvar(il2ir,vol2)
return
elseif(info.eq.6) then
c . index is out of bounds
call error(21)
return
elseif(info.eq.1) then
c . current index is a name which is not an explicit field name
if(icount.eq.1.and.m1.eq.1) then
c . syntax is arg2('xxx')
fin=-fin
top=top2
rhs1=rhs
return
else
c . syntax is arg2(...)('xxx')(...)
c . set the index
top=top2
call copyvar(il1ir,vol1)
rhs=2
goto 30
endif
endif
30 continue
c escape from standard list algorithm to handle special cases:
c (matrix/vector extraction, method..)
if(istk(il2i).ge.15.and.istk(il2i).le.17) goto 40
c standard matrix extraction
call createref(il2i,0,vol2)
fin=3
c back to allops for standard extraction
if (ptover(1,psiz)) return
icall=4
rstk(pt)=405
c *call* allops
return
35 continue
c move results at its correct location
if(err1.ne.0) then
pt=pt-1
return
endif
vol=lstk(top+1)-lstk(top)
call unsfdcopy(vol,stk(lstk(top)),1,stk(lstk(top-2)),1)
top=top-2
lstk(top+1)=lstk(top)+vol
pt=pt-1
c nothing more to do here
return
40 continue
c list mlist or tlist coded matrix extraction or other method
c . form the sublist
call copyvar(il2i,vol2)
if (ptover(1,psiz)) return
ids(1,pt)=icount
ids(2,pt)=m1
ids(4,pt)=lhs
lhs=1
fun=0
fin=-fin
rstk(pt)=403
c *call* macro or matfns
return
45 continue
c restore context
if(err1.ne.0) then
pt=pt-1
return
endif
icount=ids(1,pt)
m1=ids(2,pt)
lhs=ids(4,pt)
fin=3
pt=pt-1
if(icount.eq.m1) then
c . put the result at the top of the stack and return
vol=lstk(top+1)-lstk(top)
call unsfdcopy(vol,stk(lstk(top)),1,stk(lstk(top-2)),1)
top=top-2
lstk(top+1)=lstk(top)+vol
return
else
c . move result ajust after the index
ll2=lstk(top+1)-lstk(top)
call unsfdcopy(ll2,stk(lstk(top)),1,stk(lstk(top-1)),1)
lstk(top)=lstk(top-1)+ll2
top=top-1
c . goto back to the standard list algorithm
goto 10
endif
c
end
subroutine forcerhs(n,ierr)
c this routine allows to change the apparent lhs of a list
c extraction when it extraction appears in an input argument
c list. The lhs is changed from 1 to the number of extracted
c variables.
c
integer n,ierr
include '../stack.h'
ierr=0
c write(6,'(''forcerhs'',i5)') n
if(rstk(pt-1).eq.617) then
c in a compiled function
pstk(pt-1)=pstk(pt-1)+n-1
elseif(rstk(pt-1).eq.501) then
c in a compiled function retained for 2.4.1 compatiblity
ids(5,pt-1)=ids(5,pt-1)+n-1
elseif(pt.ge.4) then
if(rstk(pt-3).eq.307.or.rstk(pt-3).eq.702) then
pstk(pt-3)=pstk(pt-3)-1+n
else
ierr=1
endif
else
ierr=1
endif
return
end
subroutine extractfields(illist,ind,n,lw)
c Copyright INRIA
c
c given a list beginning at istk(illist), a vector of n indexes ind
c extractfields creates n variables corresponding to the n fields
c
c if n==-1 all fieds are extracted
c
include '../stack.h'
integer ind(*)
c
integer vol2
integer iadr,sadr
c
iadr(l)=l+l-1
sadr(l)=(l/2)+1
c
if(n.eq.-1) then
c . L(:)
n=istk(illist+1)
llist=sadr(illist+3+n)
c . Check lhs
if(lhs.eq.1) then
if(n.ne.lhs) then
call forcerhs(n,ierr)
if(ierr.ne.0) then
call error(41)
return
endif
endif
else
if(n.ne.lhs) then
call error(41)
return
endif
endif
c . check if it is possible to create n new variables
if(top+1+n.ge.bot) then
call error(18)
return
endif
c . create table of pointers on new variables
do 31 i=1,n
vol2=istk(illist+2+i)-istk(illist+1+i)
if(vol2.eq.0) then
err=i
call error(117)
return
endif
lstk(top+1)=lstk(top)+vol2
top=top+1
31 continue
top=top-1
c . copy the fields
l=lstk(top-n+1)
call unsfdcopy(istk(illist+n+2)-1,stk(llist),1,stk(l),1)
else
c . L([....])
llist=sadr(illist+3+istk(illist+1))
if(n.ne.lhs) then
call forcerhs(n,ierr)
if(ierr.ne.0) then
call error(41)
return
endif
endif
c . check if it is possible to create n new variables
if(top+n+1.ge.bot) then
call error(18)
return
endif
c . create table of pointers on new variables
do 52 i=1,n
k=ind(i)
vol2=istk(illist+2+k)-istk(illist+1+k)
if(vol2.eq.0) then
err=k
call error(117)
return
endif
lstk(top+1)=lstk(top)+vol2
top=top+1
52 continue
top=top-1
c . preserve fields adress (newly created variables may
c . overwrite beginining of the given list)
ill=iadr(max(lw,lstk(top+1)))
lw=sadr(ill+n)
err=sadr(ill+n)-lstk(bot)
if(err.gt.0) then
call error(17)
return
endif
do 54 i=1,n
k=ind(i)
istk(ill-1+i)=istk(illist+1+k)+llist-1
54 continue
c . copy the fields
do 55 i=1,n
k=top-n+i
call unsfdcopy(lstk(k+1)-lstk(k),stk(istk(ill-1+i)),1,
$ stk(lstk(k)),1)
55 continue
endif
return
end
|
