Program e01abfe ! E01ABF Example Program Text ! Mark 24 Release. NAG Copyright 2012. ! .. Use Statements .. Use nag_library, Only: e01abf, nag_wp ! .. Implicit None Statement .. Implicit None ! .. Parameters .. Integer, Parameter :: nin = 5, nout = 6 ! .. Local Scalars .. Real (Kind=nag_wp) :: p Integer :: i, ifail, n, n1, n2, r ! .. Local Arrays .. Real (Kind=nag_wp), Allocatable :: a(:), g(:) ! .. Executable Statements .. Write (nout,*) 'E01ABF Example Program Results' ! Skip heading in data file Read (nin,*) Read (nin,*) n, p n1 = 2*n n2 = n1 + 1 Allocate (a(n1),g(n2)) Read (nin,*)(a(i),i=1,n1) ifail = 0 Call e01abf(n,p,a,g,n1,n2,ifail) Write (nout,*) Do r = 0, n - 1 Write (nout,99999) 'Central differences order ', r, ' of Y0 =', & g(2*r+1) Write (nout,99998) ' Y1 =', g(2*r+2) End Do Write (nout,*) Write (nout,99998) 'Function value at interpolation point =', g(n2) 99999 Format (1X,A,I1,A,F12.5) 99998 Format (1X,A,F12.5) End Program e01abfe