From: andre.kullmann@...
Date: 2019-01-17T19:52:22+00:00
Subject: [ruby-core:91142] [Ruby trunk Bug#15544] sprintf returns an	unexpected string

Issue #15544 has been reported by areman01 (Andr�� Kullmann).

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Bug #15544: sprintf returns an unexpected string
https://bugs.ruby-lang.org/issues/15544

* Author: areman01 (Andr�� Kullmann)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: ruby 2.5.3p105 (2018-10-18 revision 65156) [x86_64-linux]
* Backport: 2.4: UNKNOWN, 2.5: UNKNOWN, 2.6: UNKNOWN
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Hello,

I've a little problem with the sprintf function. It returns unexpected results ( in my opinion )

``` ruby
sprintf("%.16g", 8.78)
# returns "8.779999999999999"
# my expected result is "8.78"
```

Can somebody explain this behavior to me ?

Best Begards



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