Program g01tffe
!     G01TFF Example Program Text

!     Mark 27.3 Release. NAG Copyright 2021.

!     .. Use Statements ..
      Use nag_library, Only: g01tff, nag_wp
!     .. Implicit None Statement ..
      Implicit None
!     .. Parameters ..
      Integer, Parameter               :: nin = 5, nout = 6
!     .. Local Scalars ..
      Real (Kind=nag_wp)               :: tol
      Integer                          :: i, ifail, la, lb, lout, lp, ltail
!     .. Local Arrays ..
      Real (Kind=nag_wp), Allocatable  :: a(:), b(:), g(:), p(:)
      Integer, Allocatable             :: ivalid(:)
      Character (1), Allocatable       :: tail(:)
!     .. Intrinsic Procedures ..
      Intrinsic                        :: max, mod, repeat
!     .. Executable Statements ..
      Write (nout,*) 'G01TFF Example Program Results'
      Write (nout,*)

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

!     Read in the tolerance
      Read (nin,*) tol

!     Read in the input vectors
      Read (nin,*) ltail
      Allocate (tail(ltail))
      Read (nin,*) tail(1:ltail)

      Read (nin,*) lp
      Allocate (p(lp))
      Read (nin,*) p(1:lp)

      Read (nin,*) la
      Allocate (a(la))
      Read (nin,*) a(1:la)

      Read (nin,*) lb
      Allocate (b(lb))
      Read (nin,*) b(1:lb)

!     Allocate memory for output
      lout = max(ltail,lp,la,lb)
      Allocate (g(lout),ivalid(lout))

!     Calculate deviates (inverse CDF)
      ifail = -1
      Call g01tff(ltail,tail,lp,p,la,a,lb,b,tol,g,ivalid,ifail)

      If (ifail==0 .Or. ifail==1) Then
!       Display titles
        Write (nout,*) '   TAIL    P         A         B         G     IVALID'
        Write (nout,*) repeat('-',55)

!       Display results
        Do i = 1, lout
          Write (nout,99999) tail(mod(i-1,ltail)+1), p(mod(i-1,lp)+1),         &
            a(mod(i-1,la)+1), b(mod(i-1,lb)+1), g(i), ivalid(i)
        End Do
      End If

99999 Format (5X,A,4X,F6.3,2(4X,F6.2),3X,F7.3,4X,I3)
    End Program g01tffe