PROGRAM g05sgfe

!      G05SGF Example Program Text

!      Mark 23 Release. NAG Copyright 2011.

!      .. 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 initialiser 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