source:
LMDZ4/tags/pre-merge-2009-12/libf/dyn3dpar/grad.F
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1447
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1 | ! |
2 | ! $Header$ |
3 | ! |
4 | SUBROUTINE grad(klevel, pg,pgx,pgy ) |
5 | c |
6 | c P. Le Van |
7 | c |
8 | c ****************************************************************** |
9 | c .. calcul des composantes covariantes en x et y du gradient de g |
10 | c |
11 | c ****************************************************************** |
12 | c pg est un argument d'entree pour le s-prog |
13 | c pgx et pgy sont des arguments de sortie pour le s-prog |
14 | c |
15 | IMPLICIT NONE |
16 | c |
17 | #include "dimensions.h" |
18 | #include "paramet.h" |
19 | INTEGER klevel |
20 | REAL pg( ip1jmp1,klevel ) |
21 | REAL pgx( ip1jmp1,klevel ) , pgy( ip1jm,klevel ) |
22 | INTEGER l,ij |
23 | c |
24 | c |
25 | DO 6 l = 1,klevel |
26 | c |
27 | DO 2 ij = 1, ip1jmp1 - 1 |
28 | pgx( ij,l ) = pg( ij +1,l ) - pg( ij,l ) |
29 | 2 CONTINUE |
30 | c |
31 | c .... correction pour pgx(ip1,j,l) .... |
32 | c ... pgx(iip1,j,l)= pgx(1,j,l) .... |
33 | CDIR$ IVDEP |
34 | DO 3 ij = iip1, ip1jmp1, iip1 |
35 | pgx( ij,l ) = pgx( ij -iim,l ) |
36 | 3 CONTINUE |
37 | c |
38 | DO 4 ij = 1,ip1jm |
39 | pgy( ij,l ) = pg( ij,l ) - pg( ij +iip1,l ) |
40 | 4 CONTINUE |
41 | c |
42 | 6 CONTINUE |
43 | RETURN |
44 | END |
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