Program g08eafe

!     G08EAF Example Program Text

!     Mark 27.3 Release. NAG Copyright 2021.

!     .. Use Statements ..
      Use nag_library, Only: g08eaf, nag_wp, x04caf
!     .. Implicit None Statement ..
      Implicit None
!     .. Parameters ..
      Integer, Parameter               :: nin = 5, nout = 6
!     .. Local Scalars ..
      Real (Kind=nag_wp)               :: chi, df, prob
      Integer                          :: i, ifail, ldcov, lwrk, m, maxr, n,   &
                                          nruns, nsamp, pn
      Character (1)                    :: cl
!     .. Local Arrays ..
      Real (Kind=nag_wp), Allocatable  :: cov(:,:), ex(:), wrk(:), x(:)
      Integer, Allocatable             :: ncount(:)
!     .. Executable Statements ..
      Write (nout,*) 'G08EAF Example Program Results'
      Write (nout,*)

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

!     Read in number of samples
      Read (nin,*) nsamp, m, maxr

      ldcov = maxr
      lwrk = maxr*(maxr+5)/2 + 1
      Allocate (ncount(maxr),cov(ldcov,maxr),ex(maxr),wrk(lwrk),x(1))

      If (nsamp==1) Then
        cl = 'S'
      Else
        cl = 'F'
      End If

      pn = 0
      Do i = 1, nsamp
!       Skip run heading in data file
        Read (nin,*)

!       Read in sample size
        Read (nin,*) n

        If (n>pn) Then
!         Reallocate X if required
          Deallocate (x)
          Allocate (x(n))
          pn = n
        End If

!       Read in the sample
        Read (nin,*) x(1:n)

!       Process the sample
        ifail = -1
        Call g08eaf(cl,n,x,m,maxr,nruns,ncount,ex,cov,ldcov,chi,df,prob,wrk,   &
          lwrk,ifail)
        If (ifail/=0 .And. ifail/=10) Then
          Go To 100
        End If

!       Adjust CL for intermediate calls
        If (i<nsamp-1) Then
          cl = 'I'
        Else
          cl = 'L'
        End If

      End Do

!     Display results
      Write (nout,99999) 'Total number of runs found = ', nruns
      If (ifail==10) Then
        Write (nout,*)                                                         &
          ' ** Note : the number of runs requested were not found.'
      End If
      Write (nout,*)
      Write (nout,*) '                             Count'
      Write (nout,*)                                                           &
        '          1        2        3        4        5       >5'
      Write (nout,99998) ncount(1:maxr)
      Write (nout,*)
      Write (nout,*) '                             Expect'
      Write (nout,*)                                                           &
        '          1        2        3        4        5       >5'
      Write (nout,99997) ex(1:maxr)
      Write (nout,*)
      Flush (nout)
      ifail = 0
      Call x04caf('General',' ',maxr,maxr,cov,ldcov,'Covariance matrix',ifail)
      Write (nout,*)
      Write (nout,99996) 'Chisq = ', chi
      Write (nout,99995) 'DF    = ', df
      Write (nout,99996) 'Prob  = ', prob

100   Continue

99999 Format (1X,A,I10)
99998 Format (3X,6I9)
99997 Format (3X,6F9.1)
99996 Format (1X,A,F10.4)
99995 Format (1X,A,F7.1)
    End Program g08eafe