source:
LMDZ5/branches/LF-private/libf/dyn3dpar/nxgradst.F
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| Last change on this file since 5872 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 nxgradst (klevel,rot, x, y ) |
| 5 | c |
| 6 | IMPLICIT NONE |
| 7 | c Auteur : P. Le Van |
| 8 | c |
| 9 | c ******************************************************************** |
| 10 | c calcul du gradient tourne de pi/2 du rotationnel du vect.v |
| 11 | c ******************************************************************** |
| 12 | c rot est un argument d'entree pour le s-prog |
| 13 | c x et y sont des arguments de sortie pour le s-prog |
| 14 | c |
| 15 | #include "dimensions.h" |
| 16 | #include "paramet.h" |
| 17 | #include "comgeom.h" |
| 18 | |
| 19 | INTEGER klevel |
| 20 | REAL rot( ip1jm,klevel ),x( ip1jmp1,klevel ),y(ip1jm,klevel ) |
| 21 | INTEGER l,ij |
| 22 | c |
| 23 | DO 10 l = 1,klevel |
| 24 | c |
| 25 | DO 1 ij = 2, ip1jm |
| 26 | y(ij,l)=( rot(ij,l) - rot(ij-1,l)) |
| 27 | 1 CONTINUE |
| 28 | c |
| 29 | c ..... correction pour y ( 1,j,l ) ...... |
| 30 | c |
| 31 | c .... y(1,j,l)= y(iip1,j,l) .... |
| 32 | |
| 33 | DO 2 ij = 1, ip1jm, iip1 |
| 34 | y( ij,l ) = y( ij +iim,l ) |
| 35 | 2 CONTINUE |
| 36 | c |
| 37 | DO 4 ij = iip2,ip1jm |
| 38 | x(ij,l)= rot(ij,l)-rot(ij-iip1,l) |
| 39 | 4 CONTINUE |
| 40 | DO 6 ij = 1,iip1 |
| 41 | x( ij ,l ) = 0. |
| 42 | x( ij +ip1jm,l ) = 0. |
| 43 | 6 CONTINUE |
| 44 | c |
| 45 | 10 CONTINUE |
| 46 | RETURN |
| 47 | END |
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