Program e02bcfe ! E02BCF Example Program Text ! Mark 31.1 Release. nAG Copyright 2025. ! .. Use Statements .. Use nag_library, Only: e02bcf, nag_wp ! .. Implicit None Statement .. Implicit None ! .. Parameters .. Integer, Parameter :: nin = 5, nout = 6 ! .. Local Scalars .. Real (Kind=nag_wp) :: x Integer :: i, ifail, l, left, m, ncap, ncap7 ! .. Local Arrays .. Real (Kind=nag_wp), Allocatable :: c(:), lamda(:) Real (Kind=nag_wp) :: s(4) ! .. Executable Statements .. Write (nout,*) 'E02BCF Example Program Results' ! Skip heading in data file Read (nin,*) Read (nin,*) ncap, m ncap7 = ncap + 7 Allocate (lamda(ncap7),c(ncap7)) Read (nin,*) lamda(1:ncap7) Read (nin,*) c(1:(ncap+3)) Do i = 1, m Read (nin,*) x Do left = 1, 2 ifail = 0 Call e02bcf(ncap7,lamda,c,x,left,s,ifail) If (left==1) Then If (i==1) Then Write (nout,*) Write (nout,*) & ' X Spline 1st deriv 2nd deriv ', & '3rd deriv' End If Write (nout,*) Write (nout,99999) x, ' LEFT', (s(l),l=1,4) Else Write (nout,99999) x, ' RIGHT', (s(l),l=1,4) End If End Do End Do 99999 Format (1X,E10.2,A,4E12.4) End Program e02bcfe