/[lmdze]/trunk/filtrez/filtreg_scal.f
ViewVC logotype

Contents of /trunk/filtrez/filtreg_scal.f

Parent Directory Parent Directory | Revision Log Revision Log


Revision 141 - (show annotations)
Fri Jun 5 19:21:08 2015 UTC (8 years, 11 months ago) by guez
Original Path: trunk/Sources/filtrez/filtreg_scal.f
File size: 1539 byte(s)
Procedure filtreg_hemisph is always called with sdd2 = 1 / sdd1. It
would not make sense otherwise. I do not like that this does not
appear explicitly in filtreg_hemisph. So replaced the two arguments
sdd1 and sdd2 by a single argument sdd. The cost is computing a
division instead of multplication for every 3-dimensional
position. Besides, this changes the results.

1 module filtreg_scal_m
2
3 IMPLICIT NONE
4
5 contains
6
7 SUBROUTINE filtreg_scal(champ, direct, intensive)
8
9 ! From filtrez/filtreg.F, version 1.1.1.1, 2004/05/19 12:53:09
10 ! Author: P. Le Van
11 ! Objet : filtre matriciel longitudinal, avec les matrices pr\'ecalcul\'ees
12 ! pour l'op\'erateur filtre.
13
14 USE dimens_m, ONLY: iim, jjm
15 use filtreg_hemisph_m, only: filtreg_hemisph
16 USE inifgn_m, ONLY: sddv, unsddv
17 use inifilr_m, only: jfiltnu, jfiltsu, matriceun, matriceus, matrinvn, &
18 matrinvs
19 use nr_util, only: assert
20
21 REAL, intent(inout):: champ(:, :, :) ! (iim + 1, jjm + 1, :)
22 ! en entr\'ee : champ \`a filtrer, en sortie : champ filtr\'e
23
24 logical, intent(in):: direct ! filtre direct ou inverse
25
26 logical, intent(in):: intensive
27 ! champ intensif ou extensif (pond\'er\'e par les aires)
28
29 ! Local:
30 REAL sdd(iim)
31
32 !-----------------------------------------------------------
33
34 call assert(size(champ, 1) == iim + 1, "filtreg_scal iim + 1")
35 call assert(size(champ, 2) == jjm + 1, "filtreg_scal jjm + 1")
36
37 IF (intensive) THEN
38 sdd = sddv
39 ELSE
40 sdd = unsddv
41 END IF
42
43 if (direct) then
44 call filtreg_hemisph(champ(:, 2:jfiltnu, :), sdd, matriceun)
45 call filtreg_hemisph(champ(:, jfiltsu:jjm, :), sdd, matriceus)
46 else
47 call filtreg_hemisph(champ(:, 2:jfiltnu, :), sdd, - matrinvn)
48 call filtreg_hemisph(champ(:, jfiltsu:jjm, :), sdd, - matrinvs)
49 end if
50
51 END SUBROUTINE filtreg_scal
52
53 end module filtreg_scal_m

  ViewVC Help
Powered by ViewVC 1.1.21