Program f01khfe

!     F01KHF Example Program Text
!     Mark 28.4 Release. NAG Copyright 2022.

!     .. Use Statements ..
      Use nag_library, Only: f01khf, nag_wp, x04daf
!     .. Implicit None Statement ..
      Implicit None
!     .. Parameters ..
      Integer, Parameter               :: nin = 5, nout = 6
!     .. Local Scalars ..
      Integer                          :: i, ierr, ifail, lda, lde, n
!     .. Local Arrays ..
      Complex (Kind=nag_wp), Allocatable :: a(:,:), e(:,:)
!     .. Executable Statements ..
      Write (nout,*) 'F01KHF Example Program Results'
      Write (nout,*)
      Flush (nout)
!     Skip heading in data file
      Read (nin,*)
      Read (nin,*) n

      lda = n
      lde = n
      Allocate (a(lda,n))
      Allocate (e(lde,n))

!     Read A from data file

      Read (nin,*)(a(i,1:n),i=1,n)

!     Read E from data file

      Read (nin,*)(e(i,1:n),i=1,n)

!     ifail: behaviour on error exit
!             =0 for hard exit, =1 for quiet-soft, =-1 for noisy-soft
      ifail = 0

!     Find exp( A ) and L_exp(A,E)
      Call f01khf(n,a,lda,e,lde,ifail)

!     Print solution

      ierr = 0
      Call x04daf('General',' ',n,n,a,lda,'Exp(A)',ierr)
      Write (nout,*)
      Flush (nout)
      Call x04daf('General',' ',n,n,e,lde,'L_exp(A,E)',ierr)

    End Program f01khfe