# \[Bug #1720\](Assigned) \[NaN\] == \[NaN\] $B$,(B true $B$K$J$k(B

**URL:** <https://www.ruby-forum.com/t/bug-1720-assigned-nan-nan-b-b-true-b-k-j-k-b/172021>\
**Category:** Development\
**Created:** [July 13, 2009, 1:53pm UTC](https://www.ruby-forum.com/t/bug-1720-assigned-nan-nan-b-b-true-b-k-j-k-b/172021 "2009-07-13T13:53:58Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Yuki\_S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/y/a6a055/32.png) [@Yuki\_S](https://www.ruby-forum.com/u/Yuki_S)\
**Post date:** [July 13, 2009, 1:53pm UTC](https://www.ruby-forum.com/t/bug-1720-assigned-nan-nan-b-b-true-b-k-j-k-b/172021/1 "2009-07-13T13:53:58Z")

</div>

e$B%A%1%C%He(B #1720 e$B$,99?7$5$l$^$7$?!#e(B (by Yuki S.)

e$B%9%F!\<%?%9e(B Opene$B$+$ie(BAssignede$B$KJQ99e(B  
e$BC4Ev\<Te(B Yukihiro M.e$B$K%;%C%He(B  
e$BM%@hEYe(B Normale$B$+$ie(BLowe$B$KJQ99e(B

e$B;d$be(B(4)e$B$r?d$7$^$9!#e(B

## NaNe$B$,@8$8$k%1!\<%9$C$F!“MW$ONc30$rH/@8$9$Y$-$H$3$mEAE}E\*$J%b%G%k$rB:=E$7$F$3$&$J$C$F$$$k!”$HM}2r$7$F$$$^$9$+$i!#L5M}$K@09g@-$r;}$?$;$h$&$H$7$F$bFq$7$$$s$8$c$J$$$+$J!\<$H!#$@$H$9$k$H0lHVHo32$,\>/$J$$$N$,e(B(4)e$B$@$H;W$$$^$9!#e(B

[http://redmine.ruby-lang.org/issues/show/1720](http://redmine.ruby-lang.org/issues/show/1720)