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+Thu Aug 23 16:20:04 2012 Koichi Sasada <ko1@atdot.net>
+
+ * include/ruby/ruby.h: introduce flonum technique for
+ 64bit CPU environment (sizeof(double) == sizeof(VALUE)).
+ flonum technique enables to avoid double object creation
+ if the double value d is in range about between
+ 1.72723e-77 < |d| <= 1.15792e+77 or 0.0.
+ flonum Float value is immediate and their lowest two bits
+ are b10.
+ If flonum is activated, then USE_FLONUM macro is 1.
+ I'll write detailed in this technique on
+ https://bugs.ruby-lang.org/projects/ruby-trunk/wiki/Flonum_tech
+
+ * benchmark/bmx_temp.rb: add an benchmark for simple
+ Float calculation.
+
+ * gc.c (id2ref, rb_obj_id): add flonum Float support.
+
+ * include/ruby/intern.h: move decl of rb_float_new(double)
+ to include/ruby/ruby.h.
+
+ * insns.def, vm.c, vm_insnhelper.c: add flonum optimization
+ and simplify source code.
+
+ * vm_insnhelper.h (FLONUM_2_P): added.
+
+ * marshal.c: support flonum output.
+
+ * numeric.c (rb_float_new_in_heap): added.
+
+ * parse.y: support flonum.
+
+ * random.c: ditto.
+
Thu Aug 23 16:12:40 2012 NAKAMURA Usaku <usa@ruby-lang.org>
* lib/mkmf.rb (create_makefile): add dependency to header files when