[ruby-core:117132] [Ruby master Bug#20334] Time.to_i truncates a fractional timestamp instead of rounding up

[ruby-core:117132] [Ruby master Bug#20334] Time.to_i truncates a fractional timestamp instead of rounding up

[werelnon (Malcolm Patterson) via ruby-core]

Issue #20334 has been reported by werelnon (Malcolm Patterson).

----------------------------------------
Bug #20334: Time.to_i truncates a fractional timestamp instead of rounding up
https://bugs.ruby-lang.org/issues/20334

* Author: werelnon (Malcolm Patterson)
* Status: Open
* ruby -v: 3.2.2
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
----------------------------------------
Simple steps that can be executed in a ruby interactive shell

```
irb(main):007> t = Time.now
=> 2024-03-14 00:23:55.983885525 +0000
irb(main):008> t.to_f
=> 1710375835.9838855
irb(main):009> t.to_i
=> 1710375835
```

Based on the example the result of `t.to_f.round` is the better result?



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[ruby-core:117133] [Ruby master Bug#20334] Time.to_i truncates a fractional timestamp instead of rounding up

[nobu (Nobuyoshi Nakada) via ruby-core]

Issue #20334 has been updated by nobu (Nobuyoshi Nakada).

Status changed from Open to Feedback

It is the intended behavior.

http://ruby-doc.com/3.2.2/Time.html#class-Time-label-Epoch+Seconds
> Other retrieval methods such as `Time#to_i` and `Time#to_f`
> may return a value that rounds or truncates subseconds.



----------------------------------------
Bug #20334: Time.to_i truncates a fractional timestamp instead of rounding up
https://bugs.ruby-lang.org/issues/20334#change-107209

* Author: werelnon (Malcolm Patterson)
* Status: Feedback
* ruby -v: 3.2.2
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
----------------------------------------
Simple steps that can be executed in a ruby interactive shell

```
irb(main):007> t = Time.now
=> 2024-03-14 00:23:55.983885525 +0000
irb(main):008> t.to_f
=> 1710375835.9838855
irb(main):009> t.to_i
=> 1710375835
```

Based on the example the result of `t.to_f.round` is the better result?



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 ______________________________________________
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[ruby-core:117167] [Ruby master Bug#20334] Time.to_i truncates a fractional timestamp instead of rounding up

[werelnon (Malcolm Patterson) via ruby-core]

Issue #20334 has been updated by werelnon (Malcolm Patterson).


Bit vague to say in the docs that `to_i` and `to_f` "may return a value that rounds or truncates". Why not just say it truncates? Regardless, I can live with it :)

----------------------------------------
Bug #20334: Time.to_i truncates a fractional timestamp instead of rounding up
https://bugs.ruby-lang.org/issues/20334#change-107258

* Author: werelnon (Malcolm Patterson)
* Status: Feedback
* ruby -v: 3.2.2
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
----------------------------------------
Simple steps that can be executed in a ruby interactive shell

```
irb(main):007> t = Time.now
=> 2024-03-14 00:23:55.983885525 +0000
irb(main):008> t.to_f
=> 1710375835.9838855
irb(main):009> t.to_i
=> 1710375835
```

Based on the example the result of `t.to_f.round` is the better result?



-- 
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 To unsubscribe send an email to ruby-core-leave@ml.ruby-lang.org
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