! F01FMF Example Program Text
! Mark 30.2 Release. NAG Copyright 2024.
Module f01fmfe_mod
! F01FMF Example Program Module:
! Parameters and User-defined Routines
! .. Use Statements ..
Use nag_library, Only: nag_wp
! .. Implicit None Statement ..
Implicit None
! .. Accessibility Statements ..
Private
Public :: fexp3
Contains
Subroutine fexp3(m,iflag,nz,z,fz,iuser,ruser)
! .. Parameters ..
Complex (Kind=nag_wp), Parameter :: three = (3.0E0_nag_wp,0.0E0_nag_wp &
)
! .. Scalar Arguments ..
Integer, Intent (Inout) :: iflag
Integer, Intent (In) :: m, nz
! .. Array Arguments ..
Complex (Kind=nag_wp), Intent (Out) :: fz(nz)
Complex (Kind=nag_wp), Intent (In) :: z(nz)
Real (Kind=nag_wp), Intent (Inout) :: ruser(*)
Integer, Intent (Inout) :: iuser(*)
! .. Intrinsic Procedures ..
Intrinsic :: exp
! .. Executable Statements ..
fz(1:nz) = (three**m)*exp(three*z(1:nz))
! Set iflag nonzero to terminate execution for any reason.
iflag = 0
Return
End Subroutine fexp3
End Module f01fmfe_mod
Program f01fmfe
! F01FMF Example Main Program
! .. Use Statements ..
Use f01fmfe_mod, Only: fexp3
Use nag_library, Only: f01fmf, nag_wp, x04daf
! .. Implicit None Statement ..
Implicit None
! .. Parameters ..
Integer, Parameter :: nin = 5, nout = 6
! .. Local Scalars ..
Integer :: i, ifail, iflag, lda, n
! .. Local Arrays ..
Complex (Kind=nag_wp), Allocatable :: a(:,:)
Real (Kind=nag_wp) :: ruser(1)
Integer :: iuser(1)
! .. Executable Statements ..
Write (nout,*) 'F01FMF Example Program Results'
Write (nout,*)
Flush (nout)
! Skip heading in data file
Read (nin,*)
Read (nin,*) n
lda = n
Allocate (a(lda,n))
! Read A from data file
Read (nin,*)(a(i,1:n),i=1,n)
! Find f( A )
ifail = 0
Call f01fmf(n,a,lda,fexp3,iuser,ruser,iflag,ifail)
! Print solution
ifail = 0
Call x04daf('G','N',n,n,a,lda,'F(A) = EXP(3A)',ifail)
End Program f01fmfe