# \[Bug #2661\] Bignum \<= BigDecimal("NaN") raises an Exception

**URL:** <https://www.ruby-forum.com/t/bug-2661-bignum-bigdecimal-nan-raises-an-exception/182332>\
**Category:** Development\
**Created:** [January 26, 2010, 5:31pm UTC](https://www.ruby-forum.com/t/bug-2661-bignum-bigdecimal-nan-raises-an-exception/182332 "2010-01-26T17:31:19Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Yusuke\_E](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/y/f08c70/32.png) [@Yusuke\_E](https://www.ruby-forum.com/u/Yusuke_E)\
**Post date:** [January 26, 2010, 5:31pm UTC](https://www.ruby-forum.com/t/bug-2661-bignum-bigdecimal-nan-raises-an-exception/182332/1 "2010-01-26T17:31:19Z")

</div>

Bug #2661: Bignum \<= BigDecimal(“NaN”) raises an Exception  
[http://redmine.ruby-lang.org/issues/show/2661](http://redmine.ruby-lang.org/issues/show/2661)

e$B5/I\<\<Te(B: Yusuke E.  
e$B%9%F!\<%?%9e(B: Open, e$BM%@hEYe(B: Normal  
e$B%+%F%4%je(B: core  
ruby -v: ruby 1.9.2dev (2010-01-27 trunk 26434) [i686-linux]

e$B1sF#$G$9!#e(B

Bignum e$B$He(B BigDecimal(“NaN”) e$B$re(B \<=  
e$B$J$I$GHf3S$9$k$HNc30$,$"$,$j$^$9!#e(B

$ ./ruby -rbigdecimal -ve ‘p 2\*\*100 \<= BigDecimal(“NaN”)’  
ruby 1.9.2dev (2010-01-27 trunk 26434) [i686-linux]  
-e:1:in `<=': comparison of Bignum with BigDecimal failed (ArgumentError) from -e:1:in `’

e$B$6$C$H3NG’$7$?8B$j$G!"e(B1.8.6-p388 e$B!"e(B1.8.7-p249  
e$B!"e(B1.9.1-p378 e$B!"e(Btrunk e$B$N$$$:$le(B  
e$B$G$bH/@8$7$^$9!#e(B

Comparable#\<= e$B$,F0$-!"$=$NCf$Ge(B coerce e$B$He(B \<=\>  
e$B$,8F$P$l$^$9$,!"e(BNaN e$B$H$Ne(B \<=\> e$B$Oe(B  
nil e$B$,JV$k$?$a!"e(BComparable#\<= e$B$,2;$r\>e$2$^$9!#e(B

Fixnum#\<= e$B$N\>l9g$O!"e(Bcoerce e$B$r8F$s$@8e!"e(Bcoerce  
e$B$N7k2L$KBP$7$Fe(B \<= e$B$r8F$V$N$Ge(B  
e$BNc30$K$O$J$j$^$;$s!#e(B

Fixnum e$B$HF1MM$Ke(B Bignum#\<=, \<, \>= \>  
e$B$r\<BAu$7$J$$$HBP=h$G$-$J$$$h$&$J5$$,e(B  
e$B$7$^$9!#e(B

e$BNc$K$h$C$F!"e(Brubyspec e$B$,$3$l$GMn$A$F$$$^$9!#e(B

1. 

BigDecimal#\<= properly handles NaN values ERROR  
ArgumentError: comparison of Bignum with BigDecimal failed  
/home/mame/work/ruby/spec/rubyspec/library/bigdecimal/lte\_spec.rb:77:in  
`<=' /home/mame/work/ruby/spec/rubyspec/library/bigdecimal/lte_spec.rb:77:in `block (4 levels) in \<top (required)\>’  
/home/mame/work/ruby/spec/rubyspec/library/bigdecimal/lte\_spec.rb:74:in  
`each' /home/mame/work/ruby/spec/rubyspec/library/bigdecimal/lte_spec.rb:74:in `block (3 levels) in \<top (required)\>’  
/home/mame/work/ruby/spec/rubyspec/library/bigdecimal/lte\_spec.rb:4:in  
`\<top (required)\>’

–  
Yusuke E. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)