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[#78633] ruby/spec needs help from CRuby committers — Benoit Daloze <eregontp@...>

Currently, ruby/spec is maintained mostly by individuals and enjoys the

13 messages 2016/12/13

[ruby-core:78576] [Ruby trunk Bug#9192][Closed] Inconsistent comparison between Float and BigDecimal

From: muraken@...
Date: 2016-12-10 07:23:47 UTC
List: ruby-core #78576
Issue #9192 has been updated by Kenta Murata.

Status changed from Open to Closed
Backport set to 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN

----------------------------------------
Bug #9192: Inconsistent comparison between Float and BigDecimal
https://bugs.ruby-lang.org/issues/9192#change-61961

* Author: Gustavo Sales
* Status: Closed
* Priority: Normal
* Assignee: Kenta Murata
* ruby -v:  2.0.0p353 (2013-11-22 revision 43784) [x86_64-darwin11.4.2]
* Backport: 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN
----------------------------------------
I was checking a possible inconsistency on ActiveModel and I found situations where comparing BigDecimal to Float differs to comparing Float to BigDecimal.

I have create a simple ruby script to exemplify the problem. The script is attach to this issue and output is as follows:

Instance number 706.05
###########
Instance number 706.06
Inconsistence:
0.70606E3 > 706.06
706.06 < 0.70606E3
=========
Inconsistence:
0.70606E3 <= 706.06
706.06 >= 0.70606E3
=========
###########
Instance number 706.07
Inconsistence:
0.70607E3 < 706.07
706.07 > 0.70607E3
=========
Inconsistence:
0.70607E3 >= 706.07
706.07 <= 0.70607E3
=========
###########
Instance number 706.08
###########

---Files--------------------------------
compare_decimal_float.rb (529 Bytes)


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