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C $Header: /u/gcmpack/MITgcm/pkg/exch2/exch2_get_recv_bounds.F,v 1.3 2007/10/09 00:03:33 jmc Exp $ |
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C $Name: $ |
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|
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SUBROUTINE EXCH2_GET_RECV_BOUNDS( |
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I fCode, eWdth, |
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O tiStride, tjStride, |
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U tIlo, tIhi, tJlo, tJhi ) |
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C |
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IMPLICIT NONE |
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C |
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CHARACTER*2 fCode |
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INTEGER eWdth |
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INTEGER tiStride, tjStride |
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INTEGER tIlo, tIhi, tJlo, tJhi |
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C |
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IF ( tIlo .EQ. tIhi .AND. tIlo .EQ. 0 ) THEN |
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C Receiving to a west edge |
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tIlo=1-eWdth |
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tIhi=0 |
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tistride=1 |
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IF ( tJlo .LE. tJhi ) THEN |
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tJlo=tJlo-eWdth+1 |
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tJhi=tJhi+eWdth-1 |
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tjstride=1 |
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ELSE |
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tJlo=tJlo+eWdth-1 |
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tJhi=tJhi-eWdth+1 |
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tjstride=-1 |
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ENDIF |
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ENDIF |
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IF ( tIlo .EQ. tIhi .AND. tIlo .GT. 1 ) THEN |
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C Receiving to an east edge |
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tIhi=tIhi+eWdth-1 |
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tistride=1 |
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IF ( tJlo .LE. tJhi ) THEN |
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tJlo=tJlo-eWdth+1 |
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tJhi=tJhi+eWdth-1 |
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tjstride=1 |
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ELSE |
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tJlo=tJlo+eWdth-1 |
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tJhi=tJhi-eWdth+1 |
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tjstride=-1 |
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ENDIF |
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ENDIF |
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IF ( tJlo .EQ. tJhi .AND. tJlo .EQ. 0 ) THEN |
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C Receiving to a south edge |
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tJlo=1-eWdth |
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tJhi=0 |
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tjstride=1 |
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IF ( tIlo .LE. tIhi ) THEN |
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tIlo=tIlo-eWdth+1 |
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tIhi=tIhi+eWdth-1 |
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tistride=1 |
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ELSE |
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tIlo=tIlo+eWdth-1 |
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tIhi=tIhi-eWdth+1 |
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tistride=-1 |
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ENDIF |
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ENDIF |
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IF ( tJlo .EQ. tJhi .AND. tJlo .GT. 1 ) THEN |
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C Receiving to an north edge |
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tJhi=tJhi+eWdth-1 |
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tjstride=1 |
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IF ( tIlo .LE. tIhi ) THEN |
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tIlo=tIlo-eWdth+1 |
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tIhi=tIhi+eWdth-1 |
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tistride=1 |
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ELSE |
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tIlo=tIlo+eWdth-1 |
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tIhi=tIhi-eWdth+1 |
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tistride=-1 |
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ENDIF |
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ENDIF |
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|
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RETURN |
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END |
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