Why is % not available for floating point numbers? > On Nov 9, 2017, at 04:51 , Martin R via swift-users <swift-users@swift.org> > wrote: > > There was a discussion in swift-evolution, starting at > > > https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20160516/018521.html > > about adding a "true modulo" operator to the standard library. There were > different opinions whether > > - such a thing needs to be in the standard library at all, and if yes: > - if it should be an operator or function, > - how it should be named. > > As far as I know, nothing happened until now. The above posting contains a > possible (Swift 3) implementation. In Swift 4 that would be > > infix operator %%: MultiplicationPrecedence > > func %%<T: BinaryInteger>(lhs: T, rhs: T) -> T { > return (lhs % rhs + rhs) % rhs > } > > I would probably do (as an operator or as a function) > > func %%<T: BinaryInteger>(lhs: T, rhs: T) -> T { > let rem = lhs % rhs // -rhs <= rem <= rhs > return rem >= 0 ? rem : rem + rhs > } > > with one division instead of two. > > Regards, Martin > >> Am 09.11.2017 um 12:43 schrieb Jens Persson via swift-users >> <swift-users@swift.org>: >> >> Hi all! >> Is there a modulo operation/function in Swift? I want the "true" >> mathematical modulo (as % in Python), and not remainder (as % in Swift). >> >> Do I have to implement this basic mathematical function myself and if so >> what is the best way to write it (it will be heavily used so I want it to be >> as fast as possible)? >> >> /Jens >> _______________________________________________ >> swift-users mailing list >> swift-users@swift.org >> https://lists.swift.org/mailman/listinfo/swift-users > > _______________________________________________ > swift-users mailing list > swift-users@swift.org > https://lists.swift.org/mailman/listinfo/swift-users
-- Rick Mann rm...@latencyzero.com _______________________________________________ swift-users mailing list swift-users@swift.org https://lists.swift.org/mailman/listinfo/swift-users
