Program g13ajfe

!     G13AJF Example Program Text

!     Mark 27.2 Release. NAG Copyright 2021.

!     .. Use Statements ..
      Use nag_library, Only: g13ajf, nag_wp
!     .. Implicit None Statement ..
      Implicit None
!     .. Parameters ..
      Integer, Parameter               :: nin = 5, nout = 6
!     .. Local Scalars ..
      Real (Kind=nag_wp)               :: c, rms
      Integer                          :: i, ifail, ifv, ist, iw, kfc, nfv,    &
                                          npar, nst, nx, pp, qp
!     .. Local Arrays ..
      Real (Kind=nag_wp), Allocatable  :: fsd(:), fva(:), par(:), st(:), w(:), &
                                          x(:)
      Integer                          :: isf(4), mr(7)
!     .. Intrinsic Procedures ..
      Intrinsic                        :: max
!     .. Executable Statements ..
      Write (nout,*) 'G13AJF Example Program Results'
      Write (nout,*)

!     Skip heading in data file
      Read (nin,*)

!     Read in problem size etc
      Read (nin,*) nx, nfv, kfc, c

!     Read in the orders
      Read (nin,*) mr(1:7)

!     Calculate NPAR and various array lengths
      npar = mr(1) + mr(3) + mr(4) + mr(6)
      ist = mr(4) + mr(7) + mr(2) + mr(5) + mr(3) + max(mr(1),mr(6)*mr(7))
      ifv = max(1,nfv)
      qp = mr(6)*mr(7) + mr(3)
      pp = mr(4)*mr(7) + mr(1)
      iw = 6*nx + 5*npar + qp*(qp+11) + 3*pp + 7
      Allocate (par(npar),x(nx),st(ist),fva(ifv),fsd(ifv),w(iw))

!     Read in data
      Read (nin,*) x(1:nx)

!     Read in parameter estimates
      Read (nin,*) par(1:npar)

      ifail = 0
      Call g13ajf(mr,par,npar,c,kfc,x,nx,rms,st,ist,nst,nfv,fva,fsd,ifv,isf,w, &
        iw,ifail)

!     Display results
      Write (nout,99999) 'The residual mean square is ', rms
      Write (nout,*)
      Write (nout,99998) 'The state set consists of ', nst, ' values'
      Write (nout,99997) st(1:nst)
      Write (nout,*)
      Write (nout,99996) 'The ', nfv,                                          &
        ' forecast values and standard errors are -'
      Write (nout,99995)(fva(i),fsd(i),i=1,nfv)

99999 Format (1X,A,F9.2)
99998 Format (1X,A,I1,A)
99997 Format (1X,4F11.4)
99996 Format (1X,A,I2,A)
99995 Format (10X,2F10.2)
    End Program g13ajfe