From: "msnm (Masahiro Nomoto)" <noreply@ruby-lang.org>
To: ruby-core@ruby-lang.org
Subject: [ruby-core:109879] [Ruby master Bug#19004] Complex can be nested by Complex.polar
Date: Sat, 10 Sep 2022 17:46:15 +0000 (UTC) [thread overview]
Message-ID: <redmine.issue-19004.20220910174614.18236@ruby-lang.org> (raw)
In-Reply-To: redmine.issue-19004.20220910174614.18236@ruby-lang.org
Issue #19004 has been reported by msnm (Masahiro Nomoto).
----------------------------------------
Bug #19004: Complex can be nested by Complex.polar
https://bugs.ruby-lang.org/issues/19004
* Author: msnm (Masahiro Nomoto)
* Status: Open
* Priority: Normal
* ruby -v: 3.1.2
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
`Complex.polar` with one argument can return a "nested" Complex instance, whose real part is also a Complex one.
```ruby
puts RUBY_DESCRIPTION
# ruby 3.1.2p20 (2022-04-12 revision 4491bb740a) [x86_64-linux]
p Complex.polar(1+0i)
# ((1+0i)+0i)
p 5.times.inject(1) { |num, _| Complex.polar(num) }
# (((((1+0i)+0i)+0i)+0i)+0i)
```
In Ruby < 2.7 , it simply raises an error when the argument is an instance of Complex (i.e. `obj.real? == false`).
```ruby
puts RUBY_DESCRIPTION
# ruby 2.6.10p210 (2022-04-12 revision 67958) [x86_64-linux]
p Complex.polar(1+0i)
# TypeError (not a real)
```
--
https://bugs.ruby-lang.org/
next parent reply other threads:[~2022-09-10 17:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-10 17:46 msnm (Masahiro Nomoto) [this message]
2022-10-16 19:55 ` [ruby-core:110322] [Ruby master Bug#19004] Complex can be nested by Complex.polar stevegeek (Stephen Ierodiaconou)
2022-11-05 5:25 ` [ruby-core:110614] " nagachika (Tomoyuki Chikanaga)
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