* bignum.c (BARY_ADD): New macro.
  (BARY_SUB): Ditto.
  (BARY_MUL): Ditto.
  (BARY_DIVMOD): Ditto.
  (BARY_ZERO_P): Ditto.
  (absint_numwords_generic): Use these macros.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41338 b2dd03c8-39d4-4d8f-98ff-823fe69b080e