Program f07aj_p0w_fe
! F07AJ_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: f07ad_p0w_f, f07aj_p0w_f
Use nag_library, Only: nag_wp, x04caf
! .. Implicit None Statement ..
Implicit None
! .. Parameters ..
Integer, Parameter :: nin = 5, nout = 6
! .. Local Scalars ..
Type (c_ptr) :: ad_handle
Integer :: i, ifail, lwork, n
! .. Local Arrays ..
Real (Kind=nag_wp), Allocatable :: a(:,:), work(:)
Integer, Allocatable :: ipiv(:)
! .. Executable Statements ..
Write (nout,*) 'F07AJ_P0W_F Example Program Results'
! Skip heading in data file
Read (nin,*)
Read (nin,*) n
lwork = 64*n
Allocate (a(n,n),ipiv(n),work(lwork))
! Read A from data file
Read (nin,*)(a(i,1:n),i=1,n)
! Factorize A
ifail = 0
Call f07ad_p0w_f(ad_handle,n,n,a,n,ipiv,ifail)
! Compute inverse
Call f07aj_p0w_f(ad_handle,n,a,n,ipiv,work,lwork,ifail)
Write (nout,*)
Flush (nout)
! ifail: behaviour on error exit
! =0 for hard exit, =1 for quiet-soft, =-1 for noisy-soft
ifail = 0
Call x04caf('General',' ',n,n,a,n,'Inverse',ifail)
End Program f07aj_p0w_fe