*     ************************************************************************

      logical function elcvx(elst)

*     ************************************************************************

*     Purpose :
*     ---------

*     This function checks if the status ELST corresponds to the
*     status of a convex element function.

*     Parameters :
*     ------------

*     elst    ( int )

*       input  : the status of the considered element function.
*       output : unmodified.

*     elcvx   ( log )

*       input  : meaningless.
*       output : .true.  iff the status ELST correspond to the
*                        status of a convex element function.
*                .false. otherwise.

*     Routines used :
*     ---------------

*     None.

*     Programming :
*     -------------

*     D. Tuyttens

*     ========================================================================

*     Routine parameter

      integer  elst

*     Internal variable

      integer  aux

      aux   = elst / 32
      elcvx = mod(aux,2).eq.1

      return
      end