Proposal Link:
https://github.com/apple/swift-evolution/blob/master/proposals/0113-rounding-functions-on-floatingpoint.md
The review of "SE-0113: Add integral rounding functions to FloatingPoint " ran
from June 30 ... July 5, 2016. The proposal has been *accepted*:
The community and core team agree that this proposal helps to “round out" the
other Swift 3 numerics work. One minor revision is necessary to make the
proposal implementable in Swift 3. Since protocol requirements cannot
currently have default arguments, the desired behavior should be achieved with
two overloads of each operation:
protocol FloatingPoint {
...
/// Returns a rounded representation of `self`, according to the specified
rounding rule.
func rounded() -> Self
func rounded(_ rule: RoundingRule) -> Self
/// Mutating form of `rounded`.
mutating func round()
mutating func round(_ rule: RoundingRule)
}
Where the no argument cases can be implemented with a protocol extension that
forwards to the single-argument versions.
Thank you to Karl Wagner for driving this discussion forward! I filed SR-2010
to track implementation work on this.
-Chris Lattner
Review Manager
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