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subroutine bexec(str,ns,ierr)
c ==========================================================
c This routine prepare execution of a scilab instruction (given
c in a character string str) within a C
c or fortran procedure
c ==========================================================
c Copyright INRIA
include '../stack.h'
integer sadr,iadr
character*(*) str
integer retu(6),comma,eol
c
data retu/27,14,29,30,27,23/,comma/52/,eol/99/
c
iadr(l)=l+l-1
sadr(l)=(l/2)+1
c
ierr=0
if (ddt .eq. 4) then
write(buf(1:12),'(i4)') top
call basout(io,wte,' bexec2 top:'//buf(1:4))
endif
c
mrhs=0
fin=0
c
c create a scilab variable of type string in the top of the stack
c this variable will contain the input string concatenate with
c the string of length 10 : ',return,<eol><eol>'
top=top+1
il=iadr(lstk(top))
l=il+6
err=sadr(l+ns+10)-lstk(bot)
if(err.gt.0) then
call error(17)
return
endif
c create the header
istk(il)=10
istk(il+1)=1
istk(il+2)=1
istk(il+3)=0
istk(il+4)=1
istk(il+5)=1+ns+10
c copy the input string
call cvstr(ns,istk(l),str,0)
c concatenate ',return,<eol><eol>'
l1=l+ns
istk(l1)=comma
l1=l1+1
call icopy(6,retu,1,istk(l1),1)
l1=l1+6
istk(l1)=comma
l1=l1+1
istk(l1)=eol
l1=l1+1
istk(l1)=eol
c set the end of the variable
lstk(top+1)=sadr(l1)+1
c inform scilab of the position of the variable containing
c instructions
fin=lstk(top)
return
end
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