source:
LMDZ5/branches/LMDZ5-dev032011/libf/dyn3dpar/grad.F
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5179
| Last change on this file since 5179 was 774, checked in by , 18 years ago | |
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| File size: 1.1 KB | |
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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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