Bug #20334: Time.to_i truncates a fractional timestamp instead of rounding up

• Status: Feedback
• Assignee: -
• Target version: -
• ruby -v: 3.2.2
• Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN

[werelnon (Malcolm Patterson)]

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?

[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.

[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 :)