# \[Bug #781\] Numeric#step $B$G(B step $B$H$7$F(B Infinity $B$r$D$+$&$H(B NaN $B$r@8@.$9$k$3$H$

**URL:** <https://www.ruby-forum.com/t/bug-781-numeric-step-b-g-b-step-b-h-7-f-b-infinity-b-r-d-h-b-nan-b-r-8-9-k-3-h/153994>\
**Category:** Development\
**Created:** [November 24, 2008, 1:01pm UTC](https://www.ruby-forum.com/t/bug-781-numeric-step-b-g-b-step-b-h-7-f-b-infinity-b-r-d-h-b-nan-b-r-8-9-k-3-h/153994 "2008-11-24T13:01:02Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![tadayoshi\_funaba](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/f0a364/32.png) [@tadayoshi\_funaba](https://www.ruby-forum.com/u/tadayoshi_funaba)\
**Post date:** [November 24, 2008, 1:01pm UTC](https://www.ruby-forum.com/t/bug-781-numeric-step-b-g-b-step-b-h-7-f-b-infinity-b-r-d-h-b-nan-b-r-8-9-k-3-h/153994/1 "2008-11-24T13:01:02Z")

</div>

Bug #781: Numeric#step e$B$Ge(B step e$B$H$7$Fe(B Infinity  
e$B$r$D$+$&$He(B NaN e$B$r@8@.$9$k$3$H$,$"$ke(B  
[http://redmine.ruby-lang.org/issues/show/781](http://redmine.ruby-lang.org/issues/show/781)

e$B5/I\<\<Te(B: tadayoshi funaba  
e$B%9%F!\<%?%9e(B: Open, e$BM%@hEYe(B: Normal

1.0/0 = Infinity e$B$H$7$Fe(B

$ ./ruby -ve “0.step(10,1.0/0){|x| p x}”  
ruby 1.9.0 (2008-11-24 revision 20336) [i686-linux]  
NaN

1.8 e$B$bF1$8$G$9$,!"e(B1.6 e$B$O$J$j$^$;$s!#e(B

$ ruby168 -ve “0.step(10,1.0/0){|x| p x}”  
ruby 1.6.8 (2002-12-24) [i686-linux]  
0