Program e01bhfe
! E01BHF Example Program Text
! Mark 30.1 Release. NAG Copyright 2024.
! .. Use Statements ..
Use nag_library, Only: e01bhf, nag_wp
! .. Implicit None Statement ..
Implicit None
! .. Parameters ..
Integer, Parameter :: nin = 5, nout = 6
! .. Local Scalars ..
Real (Kind=nag_wp) :: a, b, pint
Integer :: ifail, ioerr, n, r
! .. Local Arrays ..
Real (Kind=nag_wp), Allocatable :: d(:), f(:), x(:)
! .. Executable Statements ..
Write (nout,*) 'E01BHF Example Program Results'
! Skip heading in data file
Read (nin,*)
Read (nin,*) n
Allocate (d(n),f(n),x(n))
Do r = 1, n
Read (nin,*) x(r), f(r), d(r)
End Do
Write (nout,*)
Write (nout,*) ' Integral'
Write (nout,*) ' A B over (A,B)'
data: Do
Read (nin,*,Iostat=ioerr) a, b
If (ioerr<0) Then
Exit data
End If
ifail = 0
Call e01bhf(n,x,f,d,a,b,pint,ifail)
Write (nout,99999) a, b, pint
End Do data
99999 Format (1X,3F13.4)
End Program e01bhfe