Program f01edfe

!     F01EDF Example Program Text

!     Mark 27.3 Release. NAG Copyright 2021.

!     .. Use Statements ..
      Use nag_library, Only: f01edf, nag_wp, x04caf
!     .. Implicit None Statement ..
      Implicit None
!     .. Parameters ..
      Integer, Parameter               :: nin = 5, nout = 6
!     .. Local Scalars ..
      Integer                          :: i, ifail, lda, n
      Character (1)                    :: uplo
!     .. Local Arrays ..
      Real (Kind=nag_wp), Allocatable  :: a(:,:)
!     .. Executable Statements ..
      Write (nout,*) 'F01EDF Example Program Results'
      Write (nout,*)
      Flush (nout)
!     Skip heading in data file
      Read (nin,*)
      Read (nin,*) n
      Read (nin,*) uplo
      lda = n
      Allocate (a(lda,n))
!     Read A from data file
      If (uplo=='U' .Or. uplo=='u') Then
        Read (nin,*)(a(i,i:n),i=1,n)
      Else
        Read (nin,*)(a(i,1:i),i=1,n)
      End If

!     ifail: behaviour on error exit
!            =0 for hard exit, =1 for quiet-soft, =-1 for noisy-soft
      ifail = 0
!     Find exp( A )
      Call f01edf(uplo,n,a,lda,ifail)

!     Print solution
      Call x04caf(uplo,'N',n,n,a,lda,'Symmetric Exp(A)',ifail)

    End Program f01edfe