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c     ###################################################
c     ##  COPYRIGHT (C)  1992  by  Jay William Ponder  ##
c     ##              All Rights Reserved              ##
c     ###################################################
c
c     ############################################################
c     ##                                                        ##
c     ##  bound.i  --  control of periodic boundary conditions  ##
c     ##                                                        ##
c     ############################################################
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c
c     polycut       cutoff distance for infinite polymer nonbonds
c     polycut2      square of infinite polymer nonbond cutoff
c     use_bounds    flag to use periodic boundary conditions
c     use_replica   flag to use replicates for periodic system
c     use_polymer   flag to mark presence of infinite polymer
c
c
      real*8 polycut,polycut2
      logical use_bounds
      logical use_replica
      logical use_polymer
      common /bound/ polycut,polycut2,use_bounds,use_replica,use_polymer