# \[Bug #1721\] NaN.divmod(NaN) $B$,Nc30$K$J$i$J$$(B

**URL:** <https://www.ruby-forum.com/t/bug-1721-nan-divmod-nan-b-nc30-k-j-i-j-b/171495>\
**Category:** Development\
**Created:** [July 3, 2009, 3:02pm UTC](https://www.ruby-forum.com/t/bug-1721-nan-divmod-nan-b-nc30-k-j-i-j-b/171495 "2009-07-03T15:02:54Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**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:** [July 3, 2009, 3:02pm UTC](https://www.ruby-forum.com/t/bug-1721-nan-divmod-nan-b-nc30-k-j-i-j-b/171495/1 "2009-07-03T15:02:54Z")

</div>

Bug #1721: NaN.divmod(NaN) e$B$,Nc30$K$J$i$J$$e(B  
[http://redmine.ruby-lang.org/issues/show/1721](http://redmine.ruby-lang.org/issues/show/1721)

e$B5/I\<\<Te(B: tadayoshi funaba  
e$B%9%F!\<%?%9e(B: Open, e$BM%@hEYe(B: Normal  
Target version: 1.9.x  
ruby -v: ruby 1.9.2dev (2009-07-03 trunk 23945) [i686-linux]

1.8 e$B$G$Oe(B NaN.divmod(NaN) e$B$J$I$ONc30$K$J$C$F$$$^$7$?!#e(B

NaN.divmod(1) #=\> [NaN, NaN]  
NaN.divmod(NaN) #=\> [NaN, NaN]  
1.divmod(NaN) #=\> [NaN, NaN]

NaN.div(NaN) e$B$J$I$ONc30$K$J$k$3$H$+$i!"e(Bdivmod  
e$B$bNc30$K$J$k$h$&$K;W$$$^$9!#e(B

ruby 1.9.2dev (2009-07-03 trunk 23945) [i686-linux]  
ruby 1.9.1p129 (2009-05-12 revision 23412) [i686-linux]

---

<div class="post-metadata">

**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:** [July 3, 2009, 6:43pm UTC](https://www.ruby-forum.com/t/bug-1721-nan-divmod-nan-b-nc30-k-j-i-j-b/171495/2 "2009-07-03T18:43:14Z")

</div>

e$B$^$D$b$He(B e$B$f$-$R$m$G$9e(B

In message “Re: [ruby-dev:38726] [Bug #1721] NaN.divmod(NaN)  
e$B$,Nc30$K$J$i$J$$e(B”  
on Fri, 3 Jul 2009 22:01:47 +0900, tadayoshi funaba  
[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) writes:

|1.8 e$B$G$Oe(B NaN.divmod(NaN) e$B$J$I$ONc30$K$J$C$F$$$^$7$?!#e(B

e$B$J$s$+!"$I$N%P!\<%8%g%s$b0l4S@-$,0];}$5$l$F$$$J$$$h$&$K;W$$$^e(B  
e$B$9!#$I$&$9$k$N$,$h$$$G$7$g$&$M!#e(B

```
      1.8 1.9

```

e$B2Ce(B NaN NaN  
e$B8:e(B NaN NaN  
e$B\>he(B NaN NaN  
e$B=|e(B NaN NaN  
modulo NaN NaN  
remainer NaN NaN  
div e$BNc30e(B e$BNc30e(B  
divmod e$BNc30e(B NaN

|NaN.div(NaN) e$B$J$I$ONc30$K$J$k$3$H$+$i!"e(Bdivmod e$B$bNc30$K$J$k$h$&$K;W$$$^$9!#e(B

e$B@0?t=|;;$@$1Nc30$K$9$kFCJL$NM}M3$r;W$$$D$+$J$$$N$G!“5U$Ke(Bdive$B$re(B  
NaNe$B$K$9$k$Y$-$J$N$+$b$7$l$^$;$s!#K:$l$F$k$N$+$J$”!#e(Bdive$B$,Nc30e(B  
e$B$rH/@8$9$k$h$&$K$J$C$?7P0^$r3P$($F$$$i$C$7$c$kJ}$O5o$^$9$+!)e(B

---

<div class="post-metadata">

**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:** [July 4, 2009, 1:22am UTC](https://www.ruby-forum.com/t/bug-1721-nan-divmod-nan-b-nc30-k-j-i-j-b/171495/3 "2009-07-04T01:22:41Z")

</div>

e$B$^$D$b$He(B e$B$f$-$R$m$G$9e(B

In message “Re: [ruby-dev:38727] Re: [Bug #1721] NaN.divmod(NaN)  
e$B$,Nc30$K$J$i$J$$e(B”  
on Sat, 4 Jul 2009 01:42:18 +0900, Yukihiro M.  
[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) writes:

| 1.8 1.9  
|e$B2Ce(B NaN NaN  
|e$B8:e(B NaN NaN  
|e$B\>he(B NaN NaN  
|e$B=|e(B NaN NaN  
|modulo NaN NaN  
|remainer NaN NaN  
|div e$BNc30e(B e$BNc30e(B  
|divmod e$BNc30e(B NaN  
|  
||NaN.div(NaN) e$B$J$I$ONc30$K$J$k$3$H$+$i!"e(Bdivmod e$B$bNc30$K$J$k$h$&$K;W$$$^$9!#e(B  
|  
|e$B@0?t=|;;$@$1Nc30$K$9$kFCJL$NM}M3$r;W$$$D$+$J$$$N$G!“5U$Ke(Bdive$B$re(B  
|NaNe$B$K$9$k$Y$-$J$N$+$b$7$l$^$;$s!#K:$l$F$k$N$+$J$”!#e(Bdive$B$,Nc30e(B  
|e$B$rH/@8$9$k$h$&$K$J$C$?7P0^$r3P$($F$$$i$C$7$c$kJ}$O5o$^$9$+!)e(B

e$B0lHU?2$?$i!"@0?t2=$H$$$&9T0Y$,e(BFloatDomainErrore$B$rH/@8$5$;$F$$e(B  
e$B$k$3$H$K5$$,$D$-$^$7$?!#e(Bdivmode$B$,Nc30$rH/@8$5$;$k$h$&$KD\>$7$^e(B  
e$B$9!#$9$\_$^$;$s!#e(B