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subroutine readmat(name,m,n,scimat)
c see creadmat
c ==========================================
c Copyright INRIA/ENPC
double precision scimat(m,*)
integer m,n
logical creadmat,j
character*(*) name
j=creadmat(name,m,n,scimat)
return
end
logical function creadmat(name,m,n,scimat)
c ==========================================
c!purpose
c readmat reads vector/matrix in scilab's internal stack
c
c!calling sequence
c logic=creadmat('matrixname',m,n,scimat)
c
c matrixname: character string; name of the scilab variable.
c m: number of rows (output of readmat)
c n: number of columns (output of readmat)
c scimat: matrix entries stored columnwise (output of readmat)
c
c Example of use:
c Amat is a real 2 x 3 scilab matrix
c your subroutine should be as follows:
c
c subroutine mysubr(...)
c
c ...
c call readmat('Amat',m,n,scimat)
c => m=3 , n=2, and scimat(1)=Amat(1,1)
c scimat(2)=Amat(2,1)
c scimat(3)=Amat(3,1)
c scimat(4)=Amat(1,2) ...
c scimat(5)=Amat(3,2)
c!
c ==========================================
integer m,n
logical getrmat
character*(*) name
double precision scimat(m,*)
c
include '../stack.h'
integer il,it,l,id(nsiz)
iadr(l)=l+l-1
creadmat=.false.
call str2name(name,id)
c read : from scilab stack -> fortran variable
c -------
fin=-1
call stackg(id)
if (err .gt. 0) return
if (fin .eq. 0) then
call putid(ids(1,pt+1),id)
call error(4)
return
endif
if ( infstk(fin).eq.2) then
fin = istk(iadr(lstk(fin))+2)
endif
if(.not.getrmat('creadmat',fin,fin,m,n,l))return
call dmcopy(stk(l),m,scimat,m,m,n)
creadmat=.true.
return
end
logical function cwritemat(name,m,n,mat)
c =========================================
c!purpose
c cwritemat writes vector/matrix in scilab's internal stack
c
c!calling sequence
c logic=cwritemat('matrixname'//char(0),m,n,mat)
c
c name: character string; name of the scilab variable ( null terminated)
c m: number of rows
c n: number of columns
c mat: matrix entries stored columnwise in Scilab object
c call readmat('Amat',m,n,scimat)
c!
c =========================================
character*(*) name
double precision mat(*)
include '../stack.h'
integer id(nsiz),m,n,lr,lc,srhs,l4,topk
logical cremat
cwritemat=.false.
call str2name(name,id)
topk=top
top=top+1
if(.not.cremat('cwritemat',top,0,m,n,lr,lc)) return
call unsfdcopy(m*n,mat,1,stk(lr),1)
srhs=rhs
rhs=0
l4=lct(4)
lct(4)=-1
call stackp(id,0)
lct(4)=l4
top=topk
rhs=srhs
if(err.gt.0) return
cwritemat=.true.
return
end
subroutine readchain(name,itslen,chai)
c see creadchain
c ==========================================
character*(*) chai,name
logical creadchain,j
j=creadchain(name,itslen,chai)
return
end
logical function creadchain(name,itslen,chai)
c ==========================================
c!but
c this routine reads a string in scilab's memory
c and store it into chai
c!calling sequence
c
c integer itslen
c character*(*) chai,name
c
c name : character string = name of scilab variable (input)
c chai : chain to be read (output)
c null terminated
c itslen : (input) maximum number of character that can ne stored
c in chain
c (output) number of copied characters into chai
c
c
c if Scilab variable x='qwert' exists
c character ch*(10)
c l=10
c logic= creadchain('x',l,ch) returns l=5 and ch='qwert'
c
c ==========================================
character*(*) chai,name
include '../stack.h'
integer id(nsiz),m1,n1,lr1,nlr1
logical getsmat
c
iadr(l)=l+l-1
c
err=0
creadchain=.false.
call str2name(name,id)
fin=-1
call stackg(id)
if(err.gt.0) return
if(fin.eq.0) then
call putid(ids(1,pt+1),id)
call error(4)
return
endif
if ( infstk(fin).eq.2) then
fin = istk(iadr(lstk(fin))+2)
endif
if(.not.getsmat('creadchain',fin,fin,m1,n1,1,1,lr1,nlr1))
$ return
if( m1*n1.ne.1) then
buf = 'creadchain' // ': argument must be a string '
call error(999)
return
endif
itslen=min(itslen-1,nlr1)
call cvstr(itslen,istk(lr1),chai,1)
chai(itslen+1:itslen+1)=char(0)
creadchain=.true.
end
logical function creadchains(name,ir,ic,itslen,chai)
c ==========================================
c!but
c this routine reads name(ir,ic) in scilab's memory
c and store it into chai
c if ir=ic=-1 on entry then the routines returns in ir,ic
c the size of the matrix
c!calling sequence
c
c integer itslen
c character*(*) chai,name
c
c name : character string = name of scilab variable (input)
c chai : chain to be read (output)
c null terminated
c itslen : (input) maximum number of character that can be stored
c in chain
c (output) number of copied characters into chai
c
c
c if Scilab variable x='qwert' exists
c character ch*(10)
c l=10
c logic= creadchain('x',l,ch) returns l=5 and ch='qwert'
c
c ==========================================
character*(*) chai,name
include '../stack.h'
integer id(nsiz),m1,n1,lr1,nlr1
logical getsmat
c
iadr(l)=l+l-1
c
err=0
creadchains=.false.
c
call str2name(name,id)
fin=-1
call stackg(id)
if(err.gt.0) return
if(fin.eq.0) then
call putid(ids(1,pt+1),id)
call error(4)
return
endif
if ( infstk(fin).eq.2) then
fin = istk(iadr(lstk(fin))+2)
endif
if ( ir.eq.-1.and.ic.eq.-1) then
if(.not.getsmat('creadchain',fin,fin,ir,ic,1,1,lr1,nlr1))
$ return
creadchains=.true.
return
else
if(.not.getsmat('creadchain',fin,fin,m1,n1,ir,ic,lr1,nlr1))
$ return
endif
itslen=min(itslen-1,nlr1)
call cvstr(itslen,istk(lr1),chai,1)
chai(itslen+1:itslen+1)=char(0)
creadchains=.true.
end
logical function cwritechain(name,m,chai)
c =========================================
c!purpose
c cwritemat writes vector/matrix in scilab's internal stack
c
c!calling sequence
c logic=cwritemat('matrixname'//char(0),m,n,mat)
c
c name: character string; name of the scilab variable ( null terminated)
c m: number of rows
c n: number of columns
c mat: matrix entries stored columnwise in Scilab object
c call readmat('Amat',m,n,scimat)
c!
c =========================================
integer m
character*(*) name,chai
include '../stack.h'
integer id(nsiz),nlr,lr,srhs,l4,topk
logical cresmat2
cwritechain=.false.
call str2name(name,id)
topk=top
top=top+1
if(.not.cresmat2('cwritechain',top,m,lr)) return
call cvstr(m,istk(lr),chai,0)
srhs=rhs
rhs=0
l4=lct(4)
lct(4)=-1
call stackp(id,0)
lct(4)=l4
top=topk
rhs=srhs
if(err.gt.0) return
cwritechain=.true.
return
end
subroutine matptr(name,m,n,lp)
c ==========================================
c see cmatptr
c ==========================================
character*(*) name
integer m,n,lp
logical i,cmatptr
i=cmatptr(name,m,n,lp)
return
end
logical function cmatptr(name,m,n,lp)
c ==========================================
c!purpose
c matptr returns the adress of real matrix "name"
c in scilab's internal stack
c m=number of rows
c n=number of columns
c stk(lp),stk(lp+1),...,stk(lp+m*n-1)= entries (columnwise)
c If matrix "name" not in Scilab stack, returns m=n=-1.
c
c Example of use:
c Amat is a real 2 x 3 scilab matrix
c your subroutine should be as follows:
c
c subroutine mysubr(...)
c include '../stack.h'
c ...
c logic= cmatptr('Amat',m,n,lp)
c => m=3 , n=2, and stk(lp)=Amat(1,1)
c stk(lp+1)=Amat(2,1)
c stk(lp+2)=Amat(3,1)
c stk(lp+3)=Amat(1,2) ...
c stk(lp+5)=Amat(3,2)
c see example in fydot.f file
c see also readmat.f, matz.f
c ==========================================
character*(*) name
include '../stack.h'
integer id(nsiz)
logical getrmat
iadr(l)=l+l-1
cmatptr=.false.
c ---- get the id
call str2name(name,id)
c ---- get the position in fin
fin=-1
call stackg(id)
if (fin .eq. 0) then
call putid(ids(1,pt+1),id)
call error(4)
m=-1
n=-1
return
endif
c ---- get data
if ( infstk(fin).eq.2) then
fin = istk(iadr(lstk(fin))+2)
endif
if(.not.getrmat('creadmat',fin,fin,m,n,lp))return
cmatptr=.true.
end
subroutine str2name(name,id)
c =====================
c string conversion to Scilab ID
c Warning : the character name is null terminated
c and len(name) is not used
c since it can be wrong (ex when name is transmited
c by fort (intfort : function )
c =====================
include '../stack.h'
integer id(nsiz),lon
character*(*) name
lon = 0
do 100 i=1,nlgh
if(name(i:i).eq.char(0)) goto 200
lon=lon+1
100 continue
200 continue
call cvname(id,name(1:lon),0)
return
end
logical function objptrXXXX(name,lp)
c ==========================================
c objptr returns the adress of "name"
c in scilab's internal stack
*
c ==========================================
character*(*) name
include '../stack.h'
integer id(nsiz),iadr
iadr(l)=l+l-1
objptr=.false.
lp=0
c ---- get the id
call str2name(name,id)
c ---- get the position in fin
fin=-1
call stackg(id)
if (fin .eq. 0) then
call putid(ids(1,pt+1),id)
c we juste return false and lp is set to zero
c call error(4)
return
endif
lp=lstk(fin)
if ( infstk(fin).eq.2) then
lp = lstk(istk(iadr(lp)+2))
endif
objptr=.true.
end
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