Program f01gafe ! F01GAF Example Program Text ! Mark 24 Release. NAG Copyright 2012. ! .. Use Statements .. Use nag_library, Only: f01gaf, nag_wp, x04caf ! .. Implicit None Statement .. Implicit None ! .. Parameters .. Integer, Parameter :: nin = 5, nout = 6 ! .. Local Scalars .. Real (Kind=nag_wp) :: t Integer :: i, ifail, lda, ldb, m, n ! .. Local Arrays .. Real (Kind=nag_wp), Allocatable :: a(:,:), b(:,:) ! .. Executable Statements .. Write (nout,*) 'F01GAF Example Program Results' Write (nout,*) ! Skip heading in data file Read (nin,*) Read (nin,*) n, m, t lda = n ldb = n Allocate (a(lda,n)) Allocate (b(ldb,m)) ! Read A from data file Read (nin,*)(a(i,1:n),i=1,n) ! Read B from data file Read (nin,*)(b(i,1:m),i=1,n) ! Find exp(tA)B ifail = 0 Call f01gaf(n,m,a,lda,b,ldb,t,ifail) If (ifail==0) Then ! Print solution ifail = 0 Call x04caf('G','N',n,m,b,ldb,'exp(tA)B',ifail) End If End Program f01gafe