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|
subroutine fmlelm
c ================================== ( Inria ) =============
c
c evaluate formal operations
c =============================================================
c
c Copyright INRIA
include '../stack.h'
logical iseye,isnum
integer lparen,rparen,star,plus,minus,blanc,slash,bslash,symb
integer iadr,sadr
data lparen/41/,rparen/42/,star/47/,plus/45/,minus/46/,blanc/40/
data slash/48/ ,bslash/49/
c
c fonctions/fin
c addf mulf ldivf rdivf
c
c
iadr(l)=l+l-1
sadr(l)=(l/2)+1
c
if (ddt .eq. 4) then
write(buf(1:4),'(i4)') fin
call basout(io,wte,' fmlelm '//buf(1:4))
endif
if(rhs.ne.2) then
call error(39)
return
endif
goto(1001,1001,2000,2001,2002) fin
c
c addition soustraction formelle
c
1001 continue
isg=1
if(fin.eq.2) isg=-1
ilptr1=iadr(lstk(top+1))+1
c le "+1" est du a expsum qui peut renvoyer une chaine 1 carac plus long
c que la chaine donnee
il1=iadr(lstk(top-1))
il=il1
if(istk(il1).ne.10) then
err=1
call error(55)
return
endif
il2=iadr(lstk(top))
if(istk(il2).ne.10) then
err=2
call error(55)
return
endif
is=plus
c
if(istk(il1+1)*istk(il1+2).ne.1) then
err=1
call error(36)
return
endif
n1=istk(il1+5)-1
il1=il1+6
il0=il1
maxnp=iadr(lstk(bot))-ilptr1
call expsum(1,istk(il1),n1,istk(ilptr1),np1,maxnp,err)
if(err.gt.0) then
call error(17)
return
endif
c
ilptr2=ilptr1+np1+1
if(istk(il2+1)*istk(il2+2).ne.1) then
err=2
call error(36)
return
endif
n2=istk(il2+5)-1
il2=il2+6
top=top-1
maxnp=iadr(lstk(bot))-ilptr2
call expsum(isg,istk(il2),n2,istk(ilptr2),np2,maxnp,err)
if(err.gt.0) then
call error(17)
return
endif
c
inum=0
do 1005 i1=1,np1
it1=il1-1+istk(ilptr1-1+i1)
nt1=istk(ilptr1+i1)-istk(ilptr1-1+i1)
if(istk(it1+1).eq.0.and.n1.eq.2) then
call icopy(n2,istk(il2),1,istk(il1),1)
il1=il1+n2
goto 1010
endif
if(isnum(istk(it1+1),nt1-1,inum1)) then
if(istk(it1).eq.minus) inum1=-inum1
inum=inum+inum1
istk(it1)=0
endif
i2=0
1004 i2=i2+1
if(i2.gt.np2) goto 1005
it2=il2-1+istk(ilptr2-1+i2)
if(istk(it2).eq.0) goto 1004
nt2=istk(ilptr2+i2)-istk(ilptr2-1+i2)
if(istk(it2+1).eq.0.and.n2.eq.2) then
if (istk(it1).ne.0) then
il1=il1+n1
goto 1010
else
ilw=il1
goto 1008
endif
endif
if(isnum(istk(it2+1),nt2-1,inum2)) then
if(istk(it2).eq.minus) inum2=-inum2
inum=inum+inum2
istk(it2)=0
goto 1004
endif
if (istk(it1).ne.istk(it2).and.nt1.eq.nt2) then
c on regarde si les termes sont egaux
do 1002 k=2,nt1
if(istk(it1-1+k).ne.istk(it2-1+k)) goto 1004
1002 continue
istk(it2)=0
istk(it1)=0
goto 1005
endif
goto 1004
1005 continue
c
ilw=il1
do 1006 i1=1,np1
it1=il1-1+istk(ilptr1-1+i1)
nt1=istk(ilptr1+i1)-istk(ilptr1-1+i1)
if(istk(it1).ne.0) then
call icopy(nt1,istk(it1),1,istk(ilw),1)
ilw=ilw+nt1
endif
1006 continue
do 1007 i2=1,np2
it2=il2-1+istk(ilptr2-1+i2)
nt2=istk(ilptr2+i2)-istk(ilptr2-1+i2)
if(istk(it2).ne.0) then
call icopy(nt2,istk(it2),1,istk(ilw),1)
ilw=ilw+nt2
endif
1007 continue
c
1008 if(inum.ne.0) then
if(inum.lt.0) then
istk(ilw)=minus
ilw=ilw+1
inum=-inum
elseif(ilw.ne.il0) then
istk(ilw)=plus
ilw=ilw+1
endif
call intstr(inum,istk(ilw),ni,0)
ilw=ilw+ni
endif
c
il1=ilw
if(il1.eq.il0) then
istk(il1)=0
il1=il1+1
endif
c
1010 n1=il1-il0
if(istk(il0).eq.plus) then
call icopy(n1-1,istk(il0+1),1,istk(il0),1)
n1=n1-1
il1=il1-1
endif
istk(il+5)=n1+1
lstk(top+1)=sadr(il1+1)
goto 9999
c
c multiplication et divisions formelle
2000 symb=star
goto 2005
2001 symb=bslash
goto 2005
2002 symb=slash
goto 2005
2005 il1=iadr(lstk(top-1))
il=il1
if(istk(il1).ne.10) then
err=1
call error(55)
return
endif
if(istk(il1+1)*istk(il1+2).ne.1) then
err=1
call error(36)
return
endif
n1=istk(il1+5)-1
il1=il1+6
il0=il1
call atome(istk(il1),n1,it1,is1)
if(symb.ne.bslash) call termf(istk(il1),n1,it1)
c
il2=iadr(lstk(top))
if(istk(il2).ne.10) then
err=2
call error(55)
return
endif
if(istk(il2+1)*istk(il2+2).ne.1) then
err=2
call error(36)
return
endif
n2=istk(il2+5)-1
il2=il2+6
top=top-1
c
call atome(istk(il2),n2,it2,is2)
if(symb.ne.slash) call termf(istk(il2),n2,it2)
if (it2.ne.0) call factf(istk(il2),n2,it2)
c
goto (2010,2020,2030,2040) it1+2*it2+1
c
c 2 expressions
2010 continue
idec=0
if(is1.ne.1) then
call icopy(n1,istk(il1),-1,istk(il1+1),-1)
idec=1
endif
il0=il1
istk(il1)=lparen
istk(il1+n1+idec)=rparen
il1=il1+n1+idec+1
istk(il1)=symb
il1=il1+1
istk(il1)=lparen
il1=il1+1
if(is2.eq.1) then
il2=il2+1
n2=n2-1
endif
call icopy(n2,istk(il2),1,istk(il1),1)
il1=il1+n2
istk(il1)=rparen
il1=il1+1
istk(il+5)=il1-il0+1
lstk(top+1)=sadr(il1)
goto 9999
2020 continue
c un atome et une expression
idec=abs(is1)
ipar=0
if(n1-idec.eq.1 .and.istk(il1+idec).eq.0) then
if(symb.eq.bslash) then
call error(27)
return
endif
goto 9999
endif
if(symb.ne.slash.and.
& ((n1-idec.eq.1 .and. istk(il1+idec).eq.1).or.
& (n1-idec.eq.5.and.iseye(istk(il1+idec))))) then
c n1=n1-1
n1=idec
if(is1.eq.-1) then
istk(il1+n1)=lparen
n1=n1+1
ipar=1
endif
goto 2021
else
istk(il1+n1)=symb
istk(il1+n1+1)=lparen
n1=n1+2
ipar=1
endif
2021 if(is2.eq.1) then
il2=il2+1
n2=n2-1
endif
call icopy(n2,istk(il2),1,istk(il1+n1),1)
n1=n1+n2
if(ipar.eq.1) then
istk(il1+n1)=rparen
n1=n1+1
endif
istk(il+5)=1+n1
lstk(top+1)=sadr(il1+n1)
goto 9999
c expr et atome
2030 continue
idec=abs(is2)
if(n2-idec.eq.1.and.istk(il2+idec).eq.0) then
if(symb.eq.slash) then
call error(27)
return
endif
istk(il1)=0
istk(il+5)=2
lstk(top+1)=sadr(il1+1)
goto 9999
endif
if(symb.ne.bslash.and.is2.ge.0
& .and.((n2-idec.eq.1.and.istk(il2+idec).eq.1)
& .or.(n2-idec.eq.5.and.iseye(istk(il2+idec))))) then
istk(il+5)=n1+1
lstk(top+1)=sadr(il1+n1)
goto 9999
endif
idec=0
if(is1.ne.1) idec=idec+1
if(is2.lt.0) idec=idec+1
call icopy(n1,istk(il1),-1,istk(il1+idec),-1)
il0=il1
ill=il1
if(is2.lt.0) then
istk(ill)=minus
ill=ill+1
endif
istk(ill)=lparen
istk(il1+n1+idec)=rparen
il1=il1+n1+idec+1
if(symb.ne.bslash.and.is2.eq.-1.and.
& ((n2.eq.2.and.istk(il2+1).eq.1).or.
& (n2.eq.6.and.iseye(istk(il2+1))))) goto 2031
istk(il1)=symb
il1=il1+1
if(is2.ne.0) then
il2=il2+1
n2=n2-1
endif
call icopy(n2,istk(il2),1,istk(il1),1)
il1=il1+n2
2031 istk(il+5)=il1-il0+1
lstk(top+1)=sadr(il1)
goto 9999
c atome et atome
2040 continue
idec1=abs(is1)
if(n1-idec1.eq.1.and.istk(il1+idec1).eq.0) then
if(symb.eq.bslash) then
call error(27)
return
endif
goto 9999
endif
idec2=abs(is2)
if(n2-idec2.eq.1.and.istk(il2+idec2).eq.0) then
if(symb.eq.slash) then
call error(27)
return
endif
istk(il1)=0
istk(il+5)=2
lstk(top+1)=sadr(il1+1)
goto 9999
endif
if(symb.eq.star) then
if(isnum(istk(il1+idec1),n1-idec1,inum1).and.
& isnum(istk(il2+idec2),n2-idec2,inum2)) then
if(is1.eq.-1) inum1=-inum1
if(is2.eq.-1) inum2=-inum2
inum=inum1*inum2
call intstr(inum,istk(il1),ni,0)
il1=il1+ni
istk(il+5)=ni+1
lstk(top+1)=sadr(il1)
goto 9999
endif
endif
is=blanc
if(is1.eq.-1.and.is2.ge.0 .or.
+ is2.eq.-1.and.is1.ge.0) is=minus
if(symb.ne.slash.and.
& ((n1-abs(is1).eq.1.and.istk(il1+abs(is1)).eq.1).or.
& (n1-abs(is1).eq.5.and.iseye(istk(il1+abs(is1))))) ) then
if(is.eq.minus) then
istk(il1)=is
il1=il1+1
endif
call icopy(n2-abs(is2),istk(il2+abs(is2)),1,istk(il1),1)
il1=il1+n2-abs(is2)
istk(il+5)=il1-il0+1
lstk(top+1)=sadr(il1+1)
goto 9999
endif
idec1=0
idec=0
if(is1.eq.-1.and.is2.eq.-1) idec1=1
if(is.eq.minus.and.is1.eq.0) then
idec=1
call icopy(n1,istk(il1),-1,istk(il1+idec),-1)
n1=n1+1
endif
if(idec1.ne.0) then
call icopy(n1-1,istk(il1+idec+1),1,istk(il1+idec),1)
n1=n1-1
endif
il0=il1
ill=il1
if(is.eq.minus) then
istk(ill)=minus
ill=ill+1
endif
il1=il1+n1
if(symb.ne.bslash.and.
& ((n2-abs(is2).eq.1.and.istk(il2+abs(is2)).eq.1).or.
& (n2-abs(is2).eq.5.and.iseye(istk(il2+abs(is2)))))) goto 2041
istk(il1)=symb
il1=il1+1
if(is2.ne.0) then
il2=il2+1
n2=n2-1
endif
call icopy(n2,istk(il2),1,istk(il1),1)
il1=il1+n2
2041 istk(il+5)=il1-il0+1
lstk(top+1)=sadr(il1)
goto 9999
c
9999 return
end
|
