ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
c
c HTCd - Copyright (C) 1998-2006 Henrik Rydberg
c
c This program is free software; you can redistribute it and/or modify
c it under the terms of the GNU General Public License as published by
c the Free Software Foundation; either version 2 of the License, or
c (at your option) any later version.
c
c This program is distributed in the hope that it will be useful,
c but WITHOUT ANY WARRANTY; without even the implied warranty of
c MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
c GNU General Public License for more details.
c
c You should have received a copy of the GNU General Public License
c along with this program; if not, write to the Free Software
c Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
c

      integer function scomptab(s,c,n,tab)
      byte s(0:1),c(0:1),tab(0:1)
      integer i,m,n
      m=mod(n,4)
      do 10 i=0,m-1
         if(tab(s(i)).ne.tab(c(i)))go to 100
 10   continue
      do 20 i=m,n-1,4
         if(tab(s(i)).ne.tab(c(i)))go to 100
         if(tab(s(i+1)).ne.tab(c(i+1)))go to 101
         if(tab(s(i+2)).ne.tab(c(i+2)))go to 102
         if(tab(s(i+3)).ne.tab(c(i+3)))go to 103
 20   continue
      scomptab=0
      return
 100  scomptab=tab(s(i))-tab(c(i))
      return
 101  scomptab=tab(s(i+1))-tab(c(i+1))
      return
 102  scomptab=tab(s(i+2))-tab(c(i+2))
      return
 103  scomptab=tab(s(i+3))-tab(c(i+3))
      return
      end