PROGRAM f01ecfe ! F01ECF Example Program Text ! Mark 23 Release. NAG Copyright 2011. ! .. Use Statements .. USE nag_library, ONLY : f01ecf, nag_wp, x04caf ! .. Implicit None Statement .. IMPLICIT NONE ! .. Parameters .. INTEGER, PARAMETER :: nin = 5, nout = 6 ! .. Local Scalars .. INTEGER :: i, ifail, lda, n ! .. Local Arrays .. REAL (KIND=nag_wp), ALLOCATABLE :: a(:,:) ! .. Executable Statements .. WRITE (nout,*) 'F01ECF Example Program Results' WRITE (nout,*) FLUSH (nout) ! Skip heading in data file READ (nin,*) READ (nin,*) n lda = n ALLOCATE (a(lda,n)) ! Read A from data file READ (nin,*) (a(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 ) CALL f01ecf(n,a,lda,ifail) ! Print solution CALL x04caf('General',' ',n,n,a,lda,'Exp(A)',ifail) END PROGRAM f01ecfe