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subroutine i_logic(op)
include '../stack.h'
integer less,great,equal
integer op,is1
external memused
integer memused
integer iadr,sadr
data less/59/,great/60/,equal/50/
c
iadr(l)=l+l-1
sadr(l)=(l/2)+1
c
lw=iadr(lstk(top+1))
c
il2=iadr(lstk(top))
if(istk(il2).lt.0) il2=iadr(istk(il2+1))
m2=istk(il2+1)
n2=istk(il2+2)
it2=istk(il2+3)
l2=il2+4
mn2=m2*n2
top=top-1
c
il1=iadr(lstk(top))
if(istk(il1).lt.0) il1=iadr(istk(il1+1))
m1=istk(il1+1)
n1=istk(il1+2)
it1=istk(il1+3)
l1=il1+4
mn1=m1*n1
it=min(int(it1/10),int(it2/10))*10+max(mod(it1,10),mod(it2,10))
c comparaisons
if(m1.eq.-1) then
c . eye op b
call error(43)
return
elseif(m2.eq.-1) then
c . b op eye
call error(43)
return
elseif(mn1.eq.1.and.mn2.gt.1) then
istk(il1)=4
istk(il1+1)=m2
istk(il1+2)=n2
lw=max(il1+3+mn2,lw)
err=sadr(lw+memused(it,mn2))-lstk(bot)
if(err.gt.0) then
call error(17)
return
endif
call tpconv(it1,it,1,istk(l1),1,is1,1)
call tpconv(it2,it,mn2,istk(l2),1,istk(lw),1)
call gencheck(it,op,mn2,is1,0,istk(lw),1,istk(il1+3))
lstk(top+1)=sadr(il1+3+mn2)
elseif(mn2.eq.1.and.mn1.gt.1) then
istk(il1)=4
lw=max(il1+3+mn1,lw)
err=sadr(lw+memused(it,mn1))-lstk(bot)
if(err.gt.0) then
call error(17)
return
endif
call tpconv(it2,it,1,istk(l2),1,is1,1)
call tpconv(it1,it,mn1,istk(l1),1,istk(lw),1)
call gencheck(it,op,mn1,istk(lw),1,is1,0,istk(il1+3))
lstk(top+1)=sadr(il1+3+mn1)
elseif(n1.ne.n2.or.m1.ne.m2) then
if(op.eq.equal.or.op.eq.less+great) then
istk(il1)=4
istk(il1+1)=1
istk(il1+2)=1
istk(il1+3)=0
if(op.eq.less+great) istk(il1+3)=1
lstk(top+1)=sadr(il1+4)
else
call error(60)
return
endif
else
istk(il1)=4
lw1=max(lw,il1+3+mn1)
lw2=lw1+memused(it,mn1)
lw=lw2+memused(it,mn2)
err=sadr(lw)-lstk(bot)
if(err.gt.0) then
call error(17)
return
endif
call tpconv(it1,it,mn1,istk(l1),1,istk(lw1),1)
call tpconv(it2,it,mn2,istk(l2),1,istk(lw2),1)
call gencheck(it,op,mn1,istk(lw1),1,istk(lw2),1,istk(il1+3))
lstk(top+1)=sadr(il1+3+mn1)
endif
c
c
return
end
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