From: nobu@ruby-lang.org
To: ruby-core@ruby-lang.org
Subject: [ruby-core:95084] [Ruby master Bug#16180] Random.rand(max) ignores / is broken when max ceiling value is a float
Date: Wed, 25 Sep 2019 11:37:55 +0000 (UTC) [thread overview]
Message-ID: <redmine.journal-81716.20190925113754.de445eba4caa4290@ruby-lang.org> (raw)
In-Reply-To: redmine.issue-16180.20190925110724@ruby-lang.org
Issue #16180 has been updated by nobu (Nobuyoshi Nakada).
Status changed from Open to Rejected
If you want to random `Float` values up to `max`, use `Random#rand` or `Random.rand` instead of `Kernel#rand`.
----------------------------------------
Bug #16180: Random.rand(max) ignores / is broken when max ceiling value is a float
https://bugs.ruby-lang.org/issues/16180#change-81716
* Author: BillyRuffian (Nigel Brookes-Thomas)
* Status: Rejected
* Priority: Normal
* Assignee:
* Target version:
* ruby -v: ruby 2.6.3p62 (2019-04-16 revision 67580) [x86_64-darwin18]
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN
----------------------------------------
ruby 2.6.3p62 (2019-04-16 revision 67580) [x86_64-darwin18]
ruby 2.7.0preview1 (2019-05-31 trunk c55db6aa271df4a689dc8eb0039c929bf6ed43ff) [x86_64-darwin18]
Calling `rand` with a float of > 1 always return 0.
Calling `rand` with a float 0 < value > 1 will ignore the ceiling value.
e.g.
```
rand(1.1)
=> 0
rand(1.1)
=> 0
rand(0.5)
=> 0.9501516156613756
rand(0.5)
=> 0.6864252478379304
```
--
https://bugs.ruby-lang.org/
prev parent reply other threads:[~2019-09-25 11:38 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <redmine.issue-16180.20190925110724@ruby-lang.org>
2019-09-25 11:07 ` [ruby-core:95081] [Ruby master Bug#16180] Random.rand(max) ignores / is broken when max ceiling value is a float nigel
2019-09-25 11:34 ` [ruby-core:95083] " hanmac
2019-09-25 11:37 ` nobu [this message]
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