From: jacknagel@...
Date: 2015-01-21T05:46:42+00:00
Subject: [ruby-core:67714] [ruby-trunk - Bug #10762] Math **

Issue #10762 has been updated by Jack Nagel.


It's operator precedence. `**` has higher precedence than unary `-`

```
irb> -1 ** 0
=> -1
irb> (-1) ** 0
=> 1
irb> -(1 ** 0)
=> -1
```

----------------------------------------
Bug #10762: Math **
https://bugs.ruby-lang.org/issues/10762#change-51144

* Author: Jonathan Thomas
* Status: Open
* Priority: Normal
* Assignee: 
* ruby -v: ruby 2.2.0p0 (2014-12-25 revision 49005) [x86_64-darwin14]
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
----------------------------------------
According to the Maths, "any number raised to the zero power equals one".

Yet:

~~~
ruby -e 'puts((-1 ** 0) == 1)'
=> false

~~~




-- 
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