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69 lines
1.8 KiB
69 lines
1.8 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 LSWAP (MXND, LXK, KXL, K1, L1, K2, L2, ERR)
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C***********************************************************************
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C SUBROUTINE LSWAP = EXCHANGE LINE L1 IN ELEMENT K1 WITH LINE L2 IN
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C ELEMENT K2
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C***********************************************************************
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DIMENSION LXK (4, MXND), KXL (2, 3*MXND)
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LOGICAL ERR
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ERR = .TRUE.
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C INSERT L2 FOR L1
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DO 130 I = 1, 4
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IF (LXK (I, K1) .EQ. L1) THEN
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LXK (I, K1) = L2
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C INSERT L1 FOR L2
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DO 120 J = 1, 4
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IF (LXK (J, K2) .EQ. L2) THEN
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LXK (J, K2) = L1
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C INSERT K2 FOR K1
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DO 110 K = 1, 2
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IF (KXL (K, L1) .EQ. K1) THEN
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KXL (K, L1) = K2
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C INSERT K1 FOR K2
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DO 100 L = 1, 2
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IF (KXL (L, L2) .EQ. K2) THEN
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KXL (L, L2) = K1
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C EVERYTHING INSERTED OK
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ERR = .FALSE.
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RETURN
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ENDIF
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100 CONTINUE
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WRITE ( * , 10000)K1, L1, K2, L2
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RETURN
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ENDIF
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110 CONTINUE
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WRITE ( * , 10000)K1, L1, K2, L2
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RETURN
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ENDIF
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120 CONTINUE
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WRITE ( * , 10000)K1, L1, K2, L2
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RETURN
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ENDIF
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130 CONTINUE
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WRITE ( * , 10000)K1, L1, K2, L2
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RETURN
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10000 FORMAT (' ERROR IN LSWAP. K1, L1, K2, L2 :', 4I5)
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END
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