1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
! Copyright (C) 2002-2005 J. K. Dewhurst and S. Sharma.
! This file is distributed under the terms of the GNU Lesser General Public
! License. See the file COPYING for license details.
!BOP
! !ROUTINE: fsmooth
! !INTERFACE:
subroutine fsmooth(m,n,ld,f)
! !INPUT/OUTPUT PARAMETERS:
! m : number of 3-point running averages to perform (in,integer)
! n : number of point (in,integer)
! ld : leading dimension (in,integer)
! f : function array (inout,real(ld,n))
! !DESCRIPTION:
! Removes numerical noise from a function by performing $m$ successive
! 3-point running averages on the data. The endpoints are kept fixed.
!
! !REVISION HISTORY:
! Created December 2005 (JKD)
!EOP
!BOC
implicit none
! arguments
integer, intent(in) :: m
integer, intent(in) :: n
integer, intent(in) :: ld
real(8), intent(inout) :: f(ld,n)
! local variables
integer i,j
! automatic arrays
real(8) g(n)
do i=1,m
do j=2,n-1
g(j)=0.3333333333333333333d0*(f(1,j-1)+f(1,j)+f(1,j+1))
end do
f(1,2:n-1)=g(2:n-1)
end do
return
end subroutine
!EOC
|
