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63 lines
2.1 KiB
63 lines
2.1 KiB
2 years ago
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C Copyright(C) 1999-2020 National Technology & Engineering Solutions
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C of Sandia, LLC (NTESS). Under the terms of Contract DE-NA0003525 with
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C NTESS, the U.S. Government retains certain rights in this software.
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C
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C See packages/seacas/LICENSE for details
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SUBROUTINE MXCOMP (MYV, VOID, LVOID,
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* NVOIDS, DPOINT, LDICT, NNAMES, CHRCOL, LASTER)
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IMPLICIT INTEGER (A-Z)
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INCLUDE 'params.inc'
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C THIS ROUTINE PERFORMS THE NUMERIC DATA COMPRESSION OPERATION.
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C************************************************************************
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C MYV Reference array
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C VOID Void table
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C LVOID Dimension of VOID
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C NVOIDS Number of voids
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C DPOINT Dictionary pointer table
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C LDICT Dimension of DPOINT
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C NNAMES Number of names
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C CHRCOL Column for character tables
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C LASTER Error return code
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DIMENSION DPOINT(LDICT,CHRCOL,2), VOID(LVOID,CHRCOL,2), MYV(*)
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DIMENSION NNAMES(2), NVOIDS(2)
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C************************************************************************
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LASTER = SUCCESS
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C The basic strategy is to look for an array in the dictionary
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C which is immediately preceded by a void. If found, a shift
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C is performed, and the void table is updated.
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IVOID = 0
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100 CONTINUE
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IVOID = IVOID + 1
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110 IF (IVOID .GT. NVOIDS(1)) GO TO 130
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VADDR = VOID(IVOID,1,1) + VOID(IVOID,1,2)
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DO 120 IDICT = 1, NNAMES(1)
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DADDR = DPOINT(IDICT,1,1)
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IF (VADDR .EQ. DADDR .AND. DPOINT(IDICT,1,2) .GT. 0) THEN
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C Perform data shift and update void table.
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CALL SHFTI (MYV, 1, 1,
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* DADDR, DADDR+DPOINT(IDICT,1,2)-1, VOID(IVOID,1,2))
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DPOINT(IDICT,1,1) = VOID(IVOID,1,1)
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VOID(IVOID,1,1) = DPOINT(IDICT,1,1) + DPOINT(IDICT,1,2)
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CALL VTABLE (0, 0, VOID, LVOID, NVOIDS(1), CHRCOL,
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* LASTER)
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IF (LASTER .NE. SUCCESS) RETURN
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GO TO 110
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END IF
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120 CONTINUE
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GO TO 100
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130 CONTINUE
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RETURN
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END
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