Issue #2968 has been updated by Kenta Murata.


#5523 ???? Numeric#sign ??????????????????????
positive? ??? negative? ????????対???????????????? #5513 ????????????????????確?????尤???????????????????????

???????????????? Complex#sign ???????????????????????????????????????????

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Feature #2968: ????正????????????????
http://redmine.ruby-lang.org/issues/2968

Author: Yui NARUSE
Status: Assigned
Priority: Normal
Assignee: Kenta Murata
Category: core
Target version: 


=begin
 ????正???????????????????欲????????????
 主???????????????? 0.0 ??? -0.0 ?????????????????????????
 ??????????0.0 > -0.0 ??? 0.0 == -0.0 ???????????????????????????
 ????????????? flo.to_s[0] == ?- ???????????????????????????????????????????????????
 
 ?????????????????????????????????????????????
 * Numeric#positive? ??? Numeric#negative?
 * Numeric#sign -> ???? -1???正?? 1
 * Numeric#sign? -> ???? true, 正?? false (signbit(3) ???????)
 ?????????????????????????
 
 ??????????????????????
=end



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