* rational.c: Include gmp.h if GMP is used.
  (GMP_GCD_DIGITS): New macro.
  (rb_gcd_gmp): New function.
  (f_gcd_normal): Renamed from f_gcd.
  (rb_gcd_normal): New function.
  (f_gcd): Invoke rb_gcd_gmp or f_gcd_normal.

* internal.h (rb_gcd_normal): Declared.
  (rb_gcd_gmp): Ditto.

* ext/-test-/rational: New directory.




git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42858 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Add a property.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42859 b2dd03c8-39d4-4d8f-98ff-823fe69b080e