Program g05sgfe

!     G05SGF Example Program Text

!     Mark 27.2 Release. NAG Copyright 2021.

!     .. Use Statements ..
      Use nag_library, Only: g05kff, g05sgf, nag_wp
!     .. Implicit None Statement ..
      Implicit None
!     .. Parameters ..
      Integer, Parameter               :: lseed = 1, nin = 5, nout = 6
!     .. Local Scalars ..
      Integer                          :: genid, ifail, lstate, n, nmix, subid
!     .. Local Arrays ..
      Real (Kind=nag_wp), Allocatable  :: a(:), wgt(:), x(:)
      Integer                          :: seed(lseed)
      Integer, Allocatable             :: state(:)
!     .. Executable Statements ..
      Write (nout,*) 'G05SGF Example Program Results'
      Write (nout,*)

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

!     Read in the base generator information and seed
      Read (nin,*) genid, subid, seed(1)

!     Initial call to initializer to get size of STATE array
      lstate = 0
      Allocate (state(lstate))
      ifail = 0
      Call g05kff(genid,subid,seed,lseed,state,lstate,ifail)

!     Reallocate STATE
      Deallocate (state)
      Allocate (state(lstate))

!     Initialize the generator to a repeatable sequence
      ifail = 0
      Call g05kff(genid,subid,seed,lseed,state,lstate,ifail)

!     Read in sample size and number of mixtures
      Read (nin,*) n, nmix

      Allocate (x(n),a(nmix),wgt(nmix))

!     Read in the distribution parameters
      Read (nin,*) a(1:nmix)
      Read (nin,*) wgt(1:nmix)

!     Generate the variates
      ifail = 0
      Call g05sgf(n,nmix,a,wgt,state,x,ifail)

!     Display the variates
      Write (nout,99999) x(1:n)

99999 Format (1X,F10.4)
    End Program g05sgfe