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

      LOGICAL FUNCTION SIDEP (ANGLE)
C***********************************************************************

C  FUNCTION SIDEP = LOGICAL FUNCTION THAT RETURNS TRUE IF THE ANGLE IS
C                   WITHIN THE CURRENT DEFINITION OF A SIDE

C***********************************************************************

      DATA EPS /1.27/

      PI = ATAN2(0.0, -1.0)
      IF ( (ANGLE .GT. (PI - EPS)) .AND. (ANGLE .LT. (PI + EPS)) ) THEN
         SIDEP=.TRUE.
      ELSE
         SIDEP=.FALSE.
      ENDIF
      RETURN

      END