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SUBROUTINE filtreg(champ, nlat, nbniv, ifiltre, iaire, griscal, iter) |
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! From filtrez/filtreg.F, version 1.1.1.1 2004/05/19 12:53:09 |
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! Auteur: P. Le Van 07/10/97 |
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! Objet: filtre matriciel longitudinal, avec les matrices précalculées |
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! pour l'operateur filtre. |
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USE dimens_m |
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USE paramet_m |
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USE parafilt |
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USE coefils |
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IMPLICIT NONE |
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INTEGER, intent(in):: nlat ! nombre de latitudes a filtrer |
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integer, intent(in):: nbniv ! nombre de niveaux verticaux a filtrer |
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REAL, intent(inout):: champ(iip1, nlat, nbniv) |
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! en entree : champ a filtrer, en sortie : champ filtre |
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integer, intent(in):: ifiltre |
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! +1 Transformee directe |
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! -1 Transformee inverse |
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! +2 Filtre directe |
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! -2 Filtre inverse |
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! Variable Intensive |
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! ifiltre = 1 filtre directe |
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! ifiltre =-1 filtre inverse |
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! Variable Extensive |
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! ifiltre = 2 filtre directe |
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! ifiltre =-2 filtre inverse |
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integer, intent(in):: iaire |
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! 1 si champ intensif |
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! 2 si champ extensif (pondere par les aires) |
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integer, intent(in):: iter |
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! 1 filtre simple |
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LOGICAL, intent(in):: griscal |
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! Variables local to the procedure: |
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INTEGER jdfil1, jdfil2, jffil1, jffil2, jdfil, jffil |
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INTEGER i, j, l, k |
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REAL matriceun, matriceus, matricevn, matricevs, matrinvn, matrinvs |
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COMMON /matrfil/matriceun(iim, iim, nfilun), matriceus(iim, iim, nfilus), & |
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matricevn(iim, iim, nfilvn), matricevs(iim, iim, nfilvs), & |
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matrinvn(iim, iim, nfilun), matrinvs(iim, iim, nfilus) |
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REAL eignq(iim), sdd1(iim), sdd2(iim) |
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INTEGER hemisph |
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!----------------------------------------------------------- |
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IF (ifiltre==1 .OR. ifiltre==-1) STOP & |
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'Pas de transformee simple dans cette version' |
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IF (iter==2) THEN |
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PRINT *, ' Pas d iteration du filtre dans cette version !', & |
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' Utiliser old_filtreg et repasser !' |
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STOP |
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END IF |
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IF (ifiltre==-2 .AND. .NOT. griscal) THEN |
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PRINT *, ' Cette routine ne calcule le filtre inverse que ', & |
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' sur la grille des scalaires !' |
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STOP |
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END IF |
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IF (ifiltre/=2 .AND. ifiltre/=-2) THEN |
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PRINT *, ' Probleme dans filtreg car ifiltre NE 2 et NE -2', & |
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' corriger et repasser !' |
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STOP |
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END IF |
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IF (griscal) THEN |
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IF (nlat/=jjp1) THEN |
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PRINT 1111 |
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STOP |
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ELSE |
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IF (iaire==1) THEN |
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CALL scopy(iim, sddv, 1, sdd1, 1) |
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CALL scopy(iim, unsddv, 1, sdd2, 1) |
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ELSE |
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CALL scopy(iim, unsddv, 1, sdd1, 1) |
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CALL scopy(iim, sddv, 1, sdd2, 1) |
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END IF |
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jdfil1 = 2 |
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jffil1 = jfiltnu |
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jdfil2 = jfiltsu |
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jffil2 = jjm |
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END IF |
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ELSE |
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IF (nlat/=jjm) THEN |
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PRINT 2222 |
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STOP |
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ELSE |
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IF (iaire==1) THEN |
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CALL scopy(iim, sddu, 1, sdd1, 1) |
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CALL scopy(iim, unsddu, 1, sdd2, 1) |
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ELSE |
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CALL scopy(iim, unsddu, 1, sdd1, 1) |
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CALL scopy(iim, sddu, 1, sdd2, 1) |
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END IF |
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jdfil1 = 1 |
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jffil1 = jfiltnv |
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jdfil2 = jfiltsv |
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jffil2 = jjm |
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END IF |
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END IF |
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DO hemisph = 1, 2 |
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IF (hemisph==1) THEN |
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jdfil = jdfil1 |
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jffil = jffil1 |
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ELSE |
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jdfil = jdfil2 |
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jffil = jffil2 |
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END IF |
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DO l = 1, nbniv |
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DO j = jdfil, jffil |
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DO i = 1, iim |
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champ(i, j, l) = champ(i, j, l)*sdd1(i) |
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END DO |
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IF (hemisph==1) THEN |
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IF (ifiltre==-2) THEN |
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DO k = 1, iim |
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eignq(k) = 0.0 |
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END DO |
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DO k = 1, iim |
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DO i = 1, iim |
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eignq(k) = eignq(k) + matrinvn(k, i, j)*champ(i, j, l) |
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END DO |
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END DO |
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ELSE IF (griscal) THEN |
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DO k = 1, iim |
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eignq(k) = 0.0 |
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END DO |
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DO i = 1, iim |
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DO k = 1, iim |
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eignq(k) = eignq(k) + matriceun(k, i, j)*champ(i, j, l) |
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END DO |
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END DO |
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ELSE |
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DO k = 1, iim |
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eignq(k) = 0.0 |
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END DO |
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DO i = 1, iim |
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DO k = 1, iim |
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eignq(k) = eignq(k) + matricevn(k, i, j)*champ(i, j, l) |
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END DO |
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END DO |
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END IF |
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ELSE |
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IF (ifiltre==-2) THEN |
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DO k = 1, iim |
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eignq(k) = 0.0 |
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END DO |
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DO i = 1, iim |
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DO k = 1, iim |
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eignq(k) = eignq(k) + matrinvs(k, i, j-jfiltsu+1)*champ(i, j, & |
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l) |
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END DO |
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END DO |
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ELSE IF (griscal) THEN |
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DO k = 1, iim |
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eignq(k) = 0.0 |
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END DO |
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DO i = 1, iim |
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DO k = 1, iim |
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eignq(k) = eignq(k) + matriceus(k, i, j-jfiltsu+1)*champ(i, j & |
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, l) |
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END DO |
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END DO |
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ELSE |
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DO k = 1, iim |
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eignq(k) = 0.0 |
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END DO |
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DO i = 1, iim |
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DO k = 1, iim |
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eignq(k) = eignq(k) + matricevs(k, i, j-jfiltsv+1)*champ(i, j & |
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, l) |
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END DO |
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END DO |
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END IF |
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END IF |
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IF (ifiltre==2) THEN |
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DO i = 1, iim |
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champ(i, j, l) = (champ(i, j, l)+eignq(i))*sdd2(i) |
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end DO |
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ELSE |
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DO i = 1, iim |
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champ(i, j, l) = (champ(i, j, l)-eignq(i))*sdd2(i) |
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end DO |
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END IF |
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champ(iip1, j, l) = champ(1, j, l) |
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END DO |
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END DO |
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end DO |
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1111 FORMAT (//20X, 'ERREUR dans le dimensionnement du tableau & |
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& CHAMP a filtrer, sur la grille des scalaires'/) |
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2222 FORMAT (//20X, 'ERREUR dans le dimensionnement du tableau & |
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&CHAMP a filtrer, sur la grille de V ou de Z'/) |
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END SUBROUTINE filtreg |