1 |
jmc |
1.4 |
C $Header: /u/gcmpack/MITgcm/pkg/mom_common/mom_calc_hfacz.F,v 1.3 2006/06/16 14:44:06 jmc Exp $ |
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heimbach |
1.2 |
C $Name: $ |
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adcroft |
1.1 |
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#include "MOM_COMMON_OPTIONS.h" |
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CBOP |
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C !ROUTINE: MOM_CALC_HFACZ |
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C !INTERFACE: ========================================================== |
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SUBROUTINE MOM_CALC_HFACZ( |
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I bi,bj,k, |
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O hFacZ,r_hFacZ, |
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I myThid) |
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C !DESCRIPTION: |
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C Calculates the fractional thickness at vorticity points |
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C !USES: =============================================================== |
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IMPLICIT NONE |
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#include "SIZE.h" |
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jmc |
1.3 |
#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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adcroft |
1.1 |
#include "GRID.h" |
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jmc |
1.3 |
#ifdef ALLOW_EXCH2 |
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#include "W2_EXCH2_TOPOLOGY.h" |
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#include "W2_EXCH2_PARAMS.h" |
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#endif /* ALLOW_EXCH2 */ |
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adcroft |
1.1 |
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heimbach |
1.2 |
#ifdef ALLOW_AUTODIFF_TAMC |
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jmc |
1.3 |
c # include "EEPARAMS.h" |
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heimbach |
1.2 |
# include "tamc.h" |
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# include "tamc_keys.h" |
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#endif |
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adcroft |
1.1 |
C !INPUT PARAMETERS: =================================================== |
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C bi,bj :: tile indices |
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C k :: vertical level |
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C myThid :: thread number |
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INTEGER bi,bj,k |
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INTEGER myThid |
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C !OUTPUT PARAMETERS: ================================================== |
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C hFacZ :: fractional thickness at vorticity points |
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C r_hFacZ :: reciprocal |
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_RS hFacZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RS r_hFacZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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C !LOCAL VARIABLES: ==================================================== |
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C i,j :: loop indices |
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jmc |
1.3 |
C hZoption :: forward mode option to select the way hFacZ is computed: |
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C 0 : = minimum of 4 hFacW,hFacS arround (consistent with |
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C definition of partial cell & mask near topography) |
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C 1 : = minimum of 2 average (hFacW)_j,(hFacS)_i |
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C 2 : = average of 4 hFacW,hFacS arround (consistent with |
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C how free surface affects hFacW,hFacS it using r* and |
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C without topography) |
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adcroft |
1.1 |
INTEGER I,J |
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heimbach |
1.2 |
#ifdef ALLOW_DEPTH_CONTROL |
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_RL hFacZOpen(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL hFacZOpenI(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL hFacZOpenJ(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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# ifdef USE_SMOOTH_MIN |
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_RS smoothMin_R4 |
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EXTERNAL smoothMin_R4 |
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# endif /* USE_SMOOTH_MIN */ |
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#else |
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jmc |
1.4 |
_RS hFacZOpen |
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jmc |
1.3 |
INTEGER hZoption |
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LOGICAL northWestCorner, northEastCorner, |
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& southWestCorner, southEastCorner |
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INTEGER myFace |
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#ifdef ALLOW_EXCH2 |
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INTEGER myTile |
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#endif /* ALLOW_EXCH2 */ |
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CEOP |
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PARAMETER ( hZoption = 0 ) |
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heimbach |
1.2 |
#endif /* ALLOW_DEPTH_CONTROL */ |
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adcroft |
1.1 |
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heimbach |
1.2 |
#ifdef ALLOW_AUTODIFF_TAMC |
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#ifdef ALLOW_DEPTH_CONTROL |
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act1 = bi - myBxLo(myThid) |
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max1 = myBxHi(myThid) - myBxLo(myThid) + 1 |
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act2 = bj - myByLo(myThid) |
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max2 = myByHi(myThid) - myByLo(myThid) + 1 |
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act3 = myThid - 1 |
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max3 = nTx*nTy |
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act4 = ikey_dynamics - 1 |
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ikey = (act1 + 1) + act2*max1 |
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& + act3*max1*max2 |
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& + act4*max1*max2*max3 |
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kkey = (ikey-1)*Nr + k |
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#endif /* ALLOW_DEPTH_CONTROL */ |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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adcroft |
1.1 |
C-- Calculate open water fraction at vorticity points |
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heimbach |
1.2 |
#ifdef ALLOW_DEPTH_CONTROL |
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DO j=1-Oly,sNy+Oly |
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DO i=1-Olx,sNx+Olx |
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hFacZ(i,j) =0. |
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r_hFacZ(i,j) =0. |
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hFacZOpen(i,j) =0. |
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hFacZOpenJ(i,j)=0. |
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hFacZOpenJ(i,j)=0. |
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ENDDO |
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ENDDO |
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#ifdef ALLOW_AUTODIFF_TAMC |
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CADJ STORE hFacZ(:,:) = comlev1_bibj_k , key=kkey, byte=isbyte |
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CADJ STORE r_hFacZ(:,:) = comlev1_bibj_k , key=kkey, byte=isbyte |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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DO j=2-Oly,sNy+Oly |
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DO i=2-Olx,sNx+Olx |
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hFacZOpenJ(i,j)= |
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#ifdef USE_SMOOTH_MIN |
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& smoothMin_R4(_hFacW(i ,j ,k,bi,bj), |
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#else |
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& MIN(_hFacW(i ,j ,k,bi,bj), |
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#endif /* USE_SMOOTH_MIN */ |
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& _hFacW(i ,j-1,k,bi,bj)) |
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& *maskW(i,j,k,bi,bj)*maskW(i,j-1,k,bi,bj) |
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hFacZOpenI(i,j)= |
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#ifdef USE_SMOOTH_MIN |
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& smoothMin_R4(_hFacS(i ,j ,k,bi,bj), |
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#else |
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& MIN(_hFacS(i ,j ,k,bi,bj), |
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#endif /* USE_SMOOTH_MIN */ |
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& _hFacS(i-1,j ,k,bi,bj)) |
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& *maskS(i,j,k,bi,bj)*maskS(i-1,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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#ifdef ALLOW_AUTODIFF_TAMC |
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#ifdef ALLOW_DEPTH_CONTROL |
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CADJ STORE hFacZOpenI(:,:) = comlev1_bibj_k , key=kkey, byte=isbyte |
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CADJ STORE hFacZOpenJ(:,:) = comlev1_bibj_k , key=kkey, byte=isbyte |
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#endif /* ALLOW_DEPTH_CONTROL */ |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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DO j=2-Oly,sNy+Oly |
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DO i=2-Olx,sNx+Olx |
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hFacZ(i,j) = |
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#ifdef USE_SMOOTH_MIN |
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& smoothMin_R4(hFacZOpenI(i,j),hFacZOpenJ(i,j)) |
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#else |
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& MIN(hFacZOpenI(i,j),hFacZOpenJ(i,j)) |
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#endif /* USE_SMOOTH_MIN */ |
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& *maskW(i,j,k,bi,bj)*maskW(i,j-1,k,bi,bj) |
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& *maskS(i,j,k,bi,bj)*maskS(i-1,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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#ifdef ALLOW_AUTODIFF_TAMC |
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#ifdef ALLOW_DEPTH_CONTROL |
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CADJ STORE hFacZ(:,:) = comlev1_bibj_k , key=kkey, byte=isbyte |
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#endif /* ALLOW_DEPTH_CONTROL */ |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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DO j=2-Oly,sNy+Oly |
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DO i=2-Olx,sNx+Olx |
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IF (hFacZ(i,j).EQ.0.) THEN |
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r_hFacZ(i,j)=0. |
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ELSE |
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r_hFacZ(i,j)=1./hFacZ(i,j) |
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ENDIF |
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ENDDO |
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ENDDO |
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#ifdef ALLOW_AUTODIFF_TAMC |
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#ifdef ALLOW_DEPTH_CONTROL |
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CADJ STORE r_hFacZ(:,:) = comlev1_bibj_k , key=kkey, byte=isbyte |
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#endif /* ALLOW_DEPTH_CONTROL */ |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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#else /* not ALLOW_DEPTH_CONTROL */ |
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jmc |
1.3 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C- Initialize hFacZ: |
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c DO j=1-Oly,sNy+Oly |
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c DO i=1-Olx,sNx+Olx |
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c hFacZ(i,j)=0. |
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c ENDDO |
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c ENDDO |
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C-- 1rst row & column are not computed: fill with zero |
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adcroft |
1.1 |
DO i=1-Olx,sNx+Olx |
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jmc |
1.3 |
hFacZ(i,1-Oly)=0. |
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adcroft |
1.1 |
ENDDO |
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jmc |
1.3 |
DO j=2-Oly,sNy+Oly |
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hFacZ(1-Olx,j)=0. |
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ENDDO |
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C-- Calculate open water fraction at vorticity points |
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IF ( hZoption.EQ.2 ) THEN |
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DO j=2-Oly,sNy+Oly |
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DO i=2-Olx,sNx+Olx |
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c hFacZOpen= |
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c & ( _hFacW(i, j ,k,bi,bj)*rAw(i, j ,bi,bj) |
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c & +_hFacW(i,j-1,k,bi,bj)*rAw(i,j-1,bi,bj) ) |
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c & + ( _hFacS( i ,j,k,bi,bj)*rAs( i ,j,bi,bj) |
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c & +_hFacS(i-1,j,k,bi,bj)*rAs(i-1,j,bi,bj) ) |
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c hFacZ(i,j) = 0.25 _d 0 * hFacZOpen*recip_rAz(i,j,bi,bj) |
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hFacZOpen= |
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& ( _hFacW(i, j ,k,bi,bj) |
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& +_hFacW(i,j-1,k,bi,bj) ) |
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& + ( _hFacS( i ,j,k,bi,bj) |
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& +_hFacS(i-1,j,k,bi,bj) ) |
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hFacZ(i,j) = 0.25 _d 0 * hFacZOpen |
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ENDDO |
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ENDDO |
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ELSEIF ( hZoption.EQ.1 ) THEN |
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DO j=2-Oly,sNy+Oly |
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DO i=2-Olx,sNx+Olx |
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c hFacZOpen=MIN( |
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c & _hFacW(i, j ,k,bi,bj)*rAw(i, j ,bi,bj) |
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c & + _hFacW(i,j-1,k,bi,bj)*rAw(i,j-1,bi,bj) |
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c & , _hFacS( i ,j,k,bi,bj)*rAs( i ,j,bi,bj) |
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c & + _hFacS(i-1,j,k,bi,bj)*rAs(i-1,j,bi,bj) |
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c & ) |
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c hFacZ(i,j) = 0.5 _d 0 * hFacZOpen*recip_rAz(i,j,bi,bj) |
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hFacZOpen=MIN( |
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& _hFacW(i, j ,k,bi,bj) |
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& + _hFacW(i,j-1,k,bi,bj) |
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& , _hFacS( i ,j,k,bi,bj) |
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& + _hFacS(i-1,j,k,bi,bj) |
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& ) |
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hFacZ(i,j) = 0.5 _d 0 * hFacZOpen |
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ENDDO |
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ENDDO |
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ELSE |
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DO j=2-Oly,sNy+Oly |
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DO i=2-Olx,sNx+Olx |
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hFacZOpen=MIN(_hFacW(i,j,k,bi,bj), |
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& _hFacW(i,j-1,k,bi,bj)) |
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hFacZOpen=MIN(_hFacS(i,j,k,bi,bj),hFacZOpen) |
233 |
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hFacZOpen=MIN(_hFacS(i-1,j,k,bi,bj),hFacZOpen) |
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hFacZ(i,j)=hFacZOpen |
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ENDDO |
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ENDDO |
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ENDIF |
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C---+----1----+----2----+----3----+----4 |
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C Special stuff for Cubed Sphere |
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IF ( useCubedSphereExchange .AND. hZoption.GE.1 ) THEN |
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#ifdef ALLOW_EXCH2 |
244 |
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myTile = W2_myTileList(bi) |
245 |
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myFace = exch2_myFace(myTile) |
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southWestCorner = exch2_isWedge(myTile).EQ.1 |
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& .AND. exch2_isSedge(myTile).EQ.1 |
248 |
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southEastCorner = exch2_isEedge(myTile).EQ.1 |
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& .AND. exch2_isSedge(myTile).EQ.1 |
250 |
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northEastCorner = exch2_isEedge(myTile).EQ.1 |
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& .AND. exch2_isNedge(myTile).EQ.1 |
252 |
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northWestCorner = exch2_isWedge(myTile).EQ.1 |
253 |
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& .AND. exch2_isNedge(myTile).EQ.1 |
254 |
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#else |
255 |
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myFace = bi |
256 |
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southWestCorner = .TRUE. |
257 |
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southEastCorner = .TRUE. |
258 |
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northWestCorner = .TRUE. |
259 |
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northEastCorner = .TRUE. |
260 |
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#endif /* ALLOW_EXCH2 */ |
261 |
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262 |
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263 |
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IF ( southWestCorner ) THEN |
264 |
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i=1 |
265 |
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j=1 |
266 |
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IF ( hZoption.EQ.1 ) THEN |
267 |
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hFacZOpen=MIN(_hFacW(i,j,k,bi,bj), |
268 |
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& _hFacW(i,j-1,k,bi,bj)) |
269 |
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hFacZOpen=MIN(_hFacS(i,j,k,bi,bj),hFacZOpen) |
270 |
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hFacZ(i,j)=hFacZOpen |
271 |
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ELSE |
272 |
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IF ( MOD(myFace,2).EQ.1 ) THEN |
273 |
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hFacZOpen= |
274 |
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& ( _hFacW(i,j-1,k,bi,bj) |
275 |
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& +_hFacS( i ,j,k,bi,bj) ) |
276 |
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& + _hFacW(i, j ,k,bi,bj) |
277 |
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ELSE |
278 |
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hFacZOpen= |
279 |
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& ( _hFacW(i, j ,k,bi,bj) |
280 |
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& +_hFacW(i,j-1,k,bi,bj) ) |
281 |
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& + _hFacS( i ,j,k,bi,bj) |
282 |
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ENDIF |
283 |
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hFacZ(i,j) = hFacZOpen / 3. _d 0 |
284 |
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ENDIF |
285 |
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ENDIF |
286 |
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287 |
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IF ( southEastCorner ) THEN |
288 |
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I=sNx+1 |
289 |
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J=1 |
290 |
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C- to get the same truncation, independent from the face Nb: |
291 |
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IF ( hZoption.EQ.1 ) THEN |
292 |
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hFacZOpen=MIN(_hFacW(i,j,k,bi,bj), |
293 |
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& _hFacW(i,j-1,k,bi,bj)) |
294 |
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hFacZOpen=MIN(_hFacS(i-1,j,k,bi,bj),hFacZOpen) |
295 |
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hFacZ(i,j)=hFacZOpen |
296 |
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ELSE |
297 |
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IF ( myFace.EQ.4 ) THEN |
298 |
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hFacZOpen= |
299 |
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& ( _hFacS(i-1,j,k,bi,bj) |
300 |
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& +_hFacW(i,j-1,k,bi,bj) ) |
301 |
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& + _hFacW(i, j ,k,bi,bj) |
302 |
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ELSEIF ( myFace.EQ.6 ) THEN |
303 |
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hFacZOpen= |
304 |
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& ( _hFacW(i,j-1,k,bi,bj) |
305 |
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& +_hFacW(i, j ,k,bi,bj) ) |
306 |
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& + _hFacS(i-1,j,k,bi,bj) |
307 |
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ELSE |
308 |
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hFacZOpen= |
309 |
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& ( _hFacW(i, j ,k,bi,bj) |
310 |
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& +_hFacS(i-1,j,k,bi,bj) ) |
311 |
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& + _hFacW(i,j-1,k,bi,bj) |
312 |
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ENDIF |
313 |
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hFacZ(i,j) = hFacZOpen / 3. _d 0 |
314 |
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ENDIF |
315 |
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ENDIF |
316 |
adcroft |
1.1 |
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317 |
jmc |
1.3 |
IF ( northWestCorner ) THEN |
318 |
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i=1 |
319 |
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j=sNy+1 |
320 |
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C- to get the same truncation, independent from the face Nb: |
321 |
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IF ( hZoption.EQ.1 ) THEN |
322 |
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hFacZOpen=MIN(_hFacW(i,j,k,bi,bj), |
323 |
|
|
& _hFacW(i,j-1,k,bi,bj)) |
324 |
|
|
hFacZOpen=MIN(_hFacS(i,j,k,bi,bj),hFacZOpen) |
325 |
|
|
hFacZ(i,j)=hFacZOpen |
326 |
|
|
ELSE |
327 |
|
|
IF ( myFace.EQ.1 ) THEN |
328 |
|
|
hFacZOpen= |
329 |
|
|
& ( _hFacS( i ,j,k,bi,bj) |
330 |
|
|
& +_hFacW(i, j ,k,bi,bj) ) |
331 |
|
|
& + _hFacW(i,j-1,k,bi,bj) |
332 |
|
|
ELSEIF ( myFace.EQ.5 ) THEN |
333 |
|
|
hFacZOpen= |
334 |
|
|
& ( _hFacW(i, j ,k,bi,bj) |
335 |
|
|
& +_hFacW(i,j-1,k,bi,bj) ) |
336 |
|
|
& + _hFacS( i ,j,k,bi,bj) |
337 |
|
|
ELSE |
338 |
|
|
hFacZOpen= |
339 |
|
|
& ( _hFacW(i,j-1,k,bi,bj) |
340 |
|
|
& +_hFacS( i ,j,k,bi,bj) ) |
341 |
|
|
& + _hFacW(i, j ,k,bi,bj) |
342 |
|
|
ENDIF |
343 |
|
|
hFacZ(i,j) = hFacZOpen / 3. _d 0 |
344 |
|
|
ENDIF |
345 |
|
|
ENDIF |
346 |
|
|
|
347 |
|
|
IF ( northEastCorner ) THEN |
348 |
|
|
i=sNx+1 |
349 |
|
|
j=sNy+1 |
350 |
|
|
IF ( hZoption.EQ.1 ) THEN |
351 |
|
|
hFacZOpen=MIN(_hFacW(i,j,k,bi,bj), |
352 |
|
|
& _hFacW(i,j-1,k,bi,bj)) |
353 |
|
|
hFacZOpen=MIN(_hFacS(i-1,j,k,bi,bj),hFacZOpen) |
354 |
|
|
hFacZ(i,j)=hFacZOpen |
355 |
|
|
ELSE |
356 |
|
|
IF ( MOD(myFace,2).EQ.1 ) THEN |
357 |
|
|
hFacZOpen= |
358 |
|
|
& ( _hFacW(i,j-1,k,bi,bj) |
359 |
|
|
& +_hFacW(i, j ,k,bi,bj) ) |
360 |
|
|
& + _hFacS(i-1,j,k,bi,bj) |
361 |
|
|
ELSE |
362 |
|
|
hFacZOpen= |
363 |
|
|
& ( _hFacW(i, j ,k,bi,bj) |
364 |
|
|
& +_hFacS(i-1,j,k,bi,bj) ) |
365 |
|
|
& + _hFacW(i,j-1,k,bi,bj) |
366 |
|
|
ENDIF |
367 |
|
|
hFacZ(i,j) = hFacZOpen / 3. _d 0 |
368 |
|
|
ENDIF |
369 |
|
|
ENDIF |
370 |
|
|
|
371 |
|
|
ENDIF |
372 |
|
|
C---+----1----+----2----+----3----+----4 |
373 |
|
|
|
374 |
|
|
C-- Calculate reciprol: |
375 |
|
|
DO j=1-Oly,sNy+Oly |
376 |
|
|
DO i=1-Olx,sNx+Olx |
377 |
adcroft |
1.1 |
IF (hFacZ(i,j).EQ.0.) THEN |
378 |
jmc |
1.3 |
r_hFacZ(i,j) = 0. |
379 |
adcroft |
1.1 |
ELSE |
380 |
jmc |
1.3 |
r_hFacZ(i,j) = 1. _d 0/hFacZ(i,j) |
381 |
adcroft |
1.1 |
ENDIF |
382 |
|
|
ENDDO |
383 |
|
|
ENDDO |
384 |
jmc |
1.3 |
|
385 |
|
|
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
386 |
heimbach |
1.2 |
#endif /* ALLOW_DEPTH_CONTROL */ |
387 |
adcroft |
1.1 |
|
388 |
|
|
RETURN |
389 |
|
|
END |