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Feature #12953

(Float, Integer, Rational)#round(half: :down)

Added by shyouhei (Shyouhei Urabe) about 4 years ago. Updated about 4 years ago.

Status:
Closed
Priority:
Normal
Assignee:
-
Target version:
-
[ruby-core:78192]

Description

I learned that The Japanese Ministry of Health, Labor and Welfare requires that the insured burden amount of employment insurance be calculated in round half down mode. Details: http://www.mhlw.go.jp/topics/2005/04/tp0425-2.html

Given there is a real-world situation where half-down is actually mandatory, I think we should implement the (currently lacking) half: :down option.


Related issues

Related to Ruby master - Bug #12952: Incompatibility of a method signature between `Float#round` and `BigDecimal#round`Closedmrkn (Kenta Murata)Actions

Updated by nobu (Nobuyoshi Nakada) about 4 years ago

  • Subject changed from (Float, Rational)#round(half: :down) to (Float, Integer, Rational)#round(half: :down)
#2

Updated by mrkn (Kenta Murata) about 4 years ago

  • Related to Bug #12952: Incompatibility of a method signature between `Float#round` and `BigDecimal#round` added

Updated by shyouhei (Shyouhei Urabe) about 4 years ago

We looked at this issue at todays developer meeting and no one (including matz who was there) was against it. I believe this is accepted.

Updated by nobu (Nobuyoshi Nakada) about 4 years ago

  • Status changed from Open to Closed

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