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Last change
on this file since 459 was
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checked in by lmdz, 25 years ago
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Initial revision
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Author Date Id Revision
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File size:
1.1 KB
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| 1 | SUBROUTINE nxgradst (klevel,rot, x, y ) |
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| 2 | c |
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| 3 | IMPLICIT NONE |
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| 4 | c Auteur : P. Le Van |
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| 5 | c |
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| 6 | c ******************************************************************** |
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| 7 | c calcul du gradient tourne de pi/2 du rotationnel du vect.v |
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| 8 | c ******************************************************************** |
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| 9 | c rot est un argument d'entree pour le s-prog |
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| 10 | c x et y sont des arguments de sortie pour le s-prog |
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| 11 | c |
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| 12 | #include "dimensions.h" |
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| 13 | #include "paramet.h" |
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| 14 | #include "comgeom.h" |
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| 15 | |
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| 16 | INTEGER klevel |
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| 17 | REAL rot( ip1jm,klevel ),x( ip1jmp1,klevel ),y(ip1jm,klevel ) |
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| 18 | INTEGER l,ij |
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| 19 | c |
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| 20 | DO 10 l = 1,klevel |
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| 21 | c |
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| 22 | DO 1 ij = 2, ip1jm |
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| 23 | y(ij,l)=( rot(ij,l) - rot(ij-1,l)) |
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| 24 | 1 CONTINUE |
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| 25 | c |
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| 26 | c ..... correction pour y ( 1,j,l ) ...... |
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| 27 | c |
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| 28 | c .... y(1,j,l)= y(iip1,j,l) .... |
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| 29 | |
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| 30 | DO 2 ij = 1, ip1jm, iip1 |
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| 31 | y( ij,l ) = y( ij +iim,l ) |
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| 32 | 2 CONTINUE |
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| 33 | c |
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| 34 | DO 4 ij = iip2,ip1jm |
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| 35 | x(ij,l)= rot(ij,l)-rot(ij-iip1,l) |
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| 36 | 4 CONTINUE |
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| 37 | DO 6 ij = 1,iip1 |
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| 38 | x( ij ,l ) = 0. |
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| 39 | x( ij +ip1jm,l ) = 0. |
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| 40 | 6 CONTINUE |
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| 41 | c |
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| 42 | 10 CONTINUE |
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| 43 | RETURN |
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| 44 | END |
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