Module m_ctrper
Use m_mrgrnk
Private
Integer, Parameter :: kdp = selected_real_kind(15)
public :: ctrper
private :: kdp
private :: R_ctrper, I_ctrper, D_ctrper
interface ctrper
module procedure d_ctrper, r_ctrper, i_ctrper
end interface ctrper
contains
Subroutine D_ctrper (XDONT, PCLS)
! Permute array XVALT randomly, but leaving elements close
! to their initial locations (nearbyness is controled by PCLS).
! _________________________________________________________________
! The routine takes the 1...size(XVALT) index array as real
! values, takes a combination of these values and of random
! values as a perturbation of the index array, and sorts the
! initial set according to the ranks of these perturbated indices.
! The relative proportion of initial order and random order
! is 1-PCLS / PCLS, thus when PCLS = 0, there is no change in
! the order whereas the new order is fully random when PCLS = 1.
! Michel Olagnon - May 2000.
! _________________________________________________________________
! __________________________________________________________
Real (kind=kdp), Dimension (:), Intent (InOut) :: XDONT
Real, Intent (In) :: PCLS
! __________________________________________________________
!
Real, Dimension (Size(XDONT)) :: XINDT
Integer, Dimension (Size(XDONT)) :: JWRKT
Real :: PWRK
Integer :: I
!
Call Random_number (XINDT(:))
PWRK = Min (Max (0.0, PCLS), 1.0)
XINDT = Real(Size(XDONT)) * XINDT
XINDT = PWRK*XINDT + (1.0-PWRK)*(/ (Real(I), I=1,size(XDONT)) /)
Call MRGRNK (XINDT, JWRKT)
XDONT = XDONT (JWRKT)
!
End Subroutine D_ctrper
Subroutine R_ctrper (XDONT, PCLS)
! Permute array XVALT randomly, but leaving elements close
! to their initial locations (nearbyness is controled by PCLS).
! _________________________________________________________________
! The routine takes the 1...size(XVALT) index array as real
! values, takes a combination of these values and of random
! values as a perturbation of the index array, and sorts the
! initial set according to the ranks of these perturbated indices.
! The relative proportion of initial order and random order
! is 1-PCLS / PCLS, thus when PCLS = 0, there is no change in
! the order whereas the new order is fully random when PCLS = 1.
! Michel Olagnon - May 2000.
! _________________________________________________________________
! _________________________________________________________
Real, Dimension (:), Intent (InOut) :: XDONT
Real, Intent (In) :: PCLS
! __________________________________________________________
!
Real, Dimension (Size(XDONT)) :: XINDT
Integer, Dimension (Size(XDONT)) :: JWRKT
Real :: PWRK
Integer :: I
!
Call Random_number (XINDT(:))
PWRK = Min (Max (0.0, PCLS), 1.0)
XINDT = Real(Size(XDONT)) * XINDT
XINDT = PWRK*XINDT + (1.0-PWRK)*(/ (Real(I), I=1,size(XDONT)) /)
Call MRGRNK (XINDT, JWRKT)
XDONT = XDONT (JWRKT)
!
End Subroutine R_ctrper
Subroutine I_ctrper (XDONT, PCLS)
! Permute array XVALT randomly, but leaving elements close
! to their initial locations (nearbyness is controled by PCLS).
! _________________________________________________________________
! The routine takes the 1...size(XVALT) index array as real
! values, takes a combination of these values and of random
! values as a perturbation of the index array, and sorts the
! initial set according to the ranks of these perturbated indices.
! The relative proportion of initial order and random order
! is 1-PCLS / PCLS, thus when PCLS = 0, there is no change in
! the order whereas the new order is fully random when PCLS = 1.
! Michel Olagnon - May 2000.
! _________________________________________________________________
! __________________________________________________________
Integer, Dimension (:), Intent (InOut) :: XDONT
Real, Intent (In) :: PCLS
! __________________________________________________________
!
Real, Dimension (Size(XDONT)) :: XINDT
Integer, Dimension (Size(XDONT)) :: JWRKT
Real :: PWRK
Integer :: I
!
Call Random_number (XINDT(:))
PWRK = Min (Max (0.0, PCLS), 1.0)
XINDT = Real(Size(XDONT)) * XINDT
XINDT = PWRK*XINDT + (1.0-PWRK)*(/ (Real(I), I=1,size(XDONT)) /)
Call MRGRNK (XINDT, JWRKT)
XDONT = XDONT (JWRKT)
!
End Subroutine I_ctrper
end module m_ctrper