Cloned SEACAS for EXODUS library with extra build files for internal package management.
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C Copyright(C) 1999-2020 National Technology & Engineering Solutions
C of Sandia, LLC (NTESS). Under the terms of Contract DE-NA0003525 with
C NTESS, the U.S. Government retains certain rights in this software.
C
C See packages/seacas/LICENSE for details
C=======================================================================
SUBROUTINE LNCHK (PRTOK, OKAY)
C=======================================================================
C --*** LNCHK *** (PATHLN) Check that PATHLINE is a valid program to run
C -- Written by Amy Gilkey - revised 05/25/88
C --
C --LNCHK checks that PATHLINE is a valid program. This is true if
C --a mesh is defined (nodes, elements, connectivity, etc.) and
C --there are history, global or nodal variables in the database.
C --
C --If the program is valid, a welcome message is printed.
C --
C --Parameters:
C -- PRTOK - IN - if true, print error messages and welcome messages,
C -- if false, check but do not print anything
C -- OKAY - OUT - true iff the program is valid
C --
C --Common Variables:
C -- Uses NDIM, NUMNP, NUMEL of /DBNUMS/
include 'dbnums.blk'
LOGICAL PRTOK
LOGICAL OKAY
C --Check header information from database
IF ((NUMNP .LE. 0) .OR. (NUMEL .LE. 0) .OR. (NDIM .LE. 0)) THEN
IF (PRTOK) CALL PRTERR ('CMDERR',
& 'No mesh is defined')
GOTO 100
END IF
IF ((NDIM .NE. 2) .AND. (NDIM .NE. 3)) THEN
IF (PRTOK) CALL PRTERR ('CMDERR',
& 'Only a 2D or 3D mesh may be plotted')
GOTO 100
END IF
IF ((NVARHI + NVARGL + NVARNP) .LE. 0) THEN
IF (PRTOK) CALL PRTERR ('CMDERR',
& 'No non-element variables are defined')
GOTO 100
END IF
IF ((NSTEPS .LE. 0) .OR.
& ((NSTEPW .LE. 0) .AND. (NVARHI .LE. 0))) THEN
IF (PRTOK) CALL PRTERR ('CMDERR',
& 'No time steps with variables are defined')
GOTO 100
END IF
C --Write greeting message
IF (PRTOK) WRITE (*, 10000)
OKAY = .TRUE.
RETURN
100 CONTINUE
OKAY = .FALSE.
RETURN
10000 FORMAT (' PATHLINE - a mesh pathline program')
END