Forum: Ruby-core [Open] BigDecimal fail to compare to Float::INFINITY

A80284417b89211efe74a2c17448e5f4?d=identicon&s=25 unknown (Guest)
on 2014-08-04 14:55
(Received via mailing list)
Issue #10109 has been reported by Crypto Barbu.

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Bug #10109: BigDecimal fail to compare to Float::INFINITY
https://bugs.ruby-lang.org/issues/10109

* Author: Crypto Barbu
* Status: Open
* Priority: Normal
* Assignee:
* Category:
* Target version:
* ruby -v: ruby 2.2.0dev (2014-08-04 trunk 47060) [x86_64-linux]
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN
----------------------------------------
`head :002 > BigDecimal(0) < Float::INFINITY
FloatDomainError: Infinity
  from (irb):2:in `to_r'
  from (irb):2:in `<'
  from (irb):2
  from /home/.../.rvm/src/rvm/rubies/ruby-head/bin/irb:11:in `<main>'
head :003 > Float::INFINITY > BigDecimal(0)
(irb):3: warning: Numerical comparison operators will no more rescue
exceptions of #coerce
(irb):3: warning: in the next release. Return nil in #coerce if the
coercion is impossible.
ArgumentError: comparison of Float with BigDecimal failed
  from (irb):3:in `>'
  from (irb):3
  from /home/.../.rvm/src/rvm/rubies/ruby-head/bin/irb:11:in `<main>'`

**on version 2.1.0 :**

`2.1.0 :003 > BigDecimal("0") < Float::INFINITY
FloatDomainError: Infinity
  from (irb):3:in `to_r'
  from (irb):3:in `<'
  from (irb):3
  from /home/.../.rvm/src/rvm/rubies/ruby-2.1.0/bin/irb:11:in `<main>'
2.1.0 :004 > Float::INFINITY > BigDecimal("0")
ArgumentError: comparison of Float with BigDecimal failed
  from (irb):4:in `>'
  from (irb):4
  from /home/.../.rvm/src/rvm/rubies/ruby-2.1.0/bin/irb:11:in `<main>'`

**and on version 2.0.0 :**

`2.0.0-p353 :001 > BigDecimal(0) < Float::INFINITY
FloatDomainError: Infinity
  from (irb):1:in `to_r'
  from (irb):1:in `<'
  from (irb):1
  from
/home/.../.rvm/src/rvm/gems/ruby-2.0.0-p353/gems/railties-4.1.1/lib/rails/commands/console.rb:90:in
`start'
  from
/home/.../.rvm/src/rvm/gems/ruby-2.0.0-p353/gems/railties-4.1.1/lib/rails/commands/console.rb:9:in
`start'
  from
/home/.../.rvm/src/rvm/gems/ruby-2.0.0-p353/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:69:in
`console'
  from
/home/.../.rvm/src/rvm/gems/ruby-2.0.0-p353/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:40:in
`run_command!'
  from
/home/.../.rvm/src/rvm/gems/ruby-2.0.0-p353/gems/railties-4.1.1/lib/rails/commands.rb:17:in
`<top (required)>'
  from bin/rails:8:in `require'
  from bin/rails:8:in `<main>'
2.0.0-p353 :002 > Float::INFINITY > BigDecimal(0)
 => true`

So there is a regression on Float.
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