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+Sun Sep  1 00:07:09 2013  Tanaka Akira  <akr@fsij.org>
+
+	* bignum.c (rb_big_bit_length): New method.
+	  (rb_fix_bit_length): Ditto.
+	  [ruby-core:56247] [Feature #8700]
+
 Sat Aug 31 22:18:29 2013  Tanaka Akira  <akr@fsij.org>
 
 	* process.c (rb_clock_getres): New method.