Program d01ga_p0w_fe
! D01GA_P0W_F Example Program Text
! Mark 30.1 Release. NAG Copyright 2024.
! .. Use Statements ..
Use iso_c_binding, Only: c_ptr
Use nagad_library, Only: d01ga_p0w_f
Use nag_library, Only: nag_wp
! .. Implicit None Statement ..
Implicit None
! .. Parameters ..
Integer, Parameter :: nin = 5, nout = 6
! .. Local Scalars ..
Type (c_ptr) :: ad_handle
Real (Kind=nag_wp) :: a, ans, er, xr
Integer :: i, ifail, n
! .. Local Arrays ..
Real (Kind=nag_wp), Allocatable :: x(:), y(:)
! .. Intrinsic Procedures ..
Intrinsic :: real
! .. Executable Statements ..
Write (nout,*) 'D01GA_P0W_F Example Program Results'
! Skip heading in data file
Read (nin,*)
Read (nin,*) n
Read (nin,*) a
Allocate (x(n),y(n))
Do i = 1, n
xr = real(i-1,kind=nag_wp)/real(n-1,kind=nag_wp)
x(i) = xr
y(i) = 4.0_nag_wp/(1.0_nag_wp+a*a*xr*xr)
End Do
! Call the passive routine
ifail = 0
Call d01ga_p0w_f(ad_handle,x,y,n,ans,er,ifail)
Write (nout,*)
Write (nout,99999) ' Solution, ans =', ans
Write (nout,*)
99999 Format (1X,A,1X,F12.5)
End Program d01ga_p0w_fe