C     An interface to sbart() --- fewer arguments BUT unspecified scrtch() dimension
C     
      subroutine qsbart(penalt,dofoff,xs,ys,ws,ssw,n,knot,nk,
     &     coef,sz,lev,
     &     crit,iparms,spar,parms,
     &     isetup, scrtch, ld4,ldnk,ier)
c     
      integer n,nk,isetup, iparms(3), ld4,ldnk,ier
      double precision penalt,dofoff, xs(n),ys(n),ws(n),ssw,
     &     knot(nk+4), coef(nk),sz(n),lev(n),
     &     crit, spar, parms(4),
     &     scrtch(*)
C     ^^^^^^^^ dimension (9+2*ld4+nk)*nk = (17 + nk)*nk

      call sbart(penalt,dofoff,xs,ys,ws,ssw,n,knot,nk,
     &     coef,sz,lev, crit,
     &     iparms(1),spar,iparms(2),iparms(3),
c     = icrit   spar   ispar    iter
     &     parms(1),parms(2),parms(3),parms(4),
c     = lspar   uspar    tol      eps
     &     isetup, scrtch(1),
c     =  0     xwy
     &     scrtch(  nk+1),scrtch(2*nk+1),scrtch(3*nk+1),scrtch(4*nk+1),
c     =   hs0       hs1      hs2     hs3
     &     scrtch(5*nk+1),scrtch(6*nk+1),scrtch(7*nk+1),scrtch(8*nk+1),
c     =   sg0       sg1      sg2     sg3
     &     scrtch(9*nk+1),scrtch(9*nk+ ld4*nk+1),scrtch(9*nk+2*ld4*nk),
c     =   abd       p1ip        p2ip
     &     ld4,ldnk,ier)

      return
      end

