root/trunk/ProjectFortress/test_library/RecB.fss

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    Copyright 2007 Sun Microsystems, Inc.,
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    trademarks of Sun Microsystems, Inc. in the U.S. and other countries.
 ******************************************************************************)

component RecB
  import RecA.{...}
  export RecB

  trait Even
    getter anOdd(): Odd
  end

  even(x:ZZ32): Boolean =
    if x = 0 then true
    elif x > 0 then odd(x-1)
    elif x < 0 then odd(x+1)
    end

end