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Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 34 |
1 files changed, 34 insertions, 0 deletions
@@ -1,3 +1,37 @@ +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 |