> On Jun 24, 2016, at 2:52 PM, Haravikk via swift-evolution > <swift-evolution@swift.org> wrote: > > >> On 24 Jun 2016, at 18:17, Károly Lőrentey via swift-evolution >> <swift-evolution@swift.org> wrote: >> I’m especially stoked about `FixedWidthInteger.doubleWidthMultiply`, which >> will likely lead to a measurable speedup. Why is there no >> `doubleWidthQuotientAndRemainder` or `doubleWidthDivide`, though? > > Double-width isn't needed for these as it's impossible for an integer to > become larger when dividing (the smallest value you can divide by and get a > result is 2, which will halve the value), and the remainder can't be larger > than the original value.
A double-width divide takes a double-width *numerator*, and is a useful building block for some approaches to bignum divides. – Steve _______________________________________________ swift-evolution mailing list swift-evolution@swift.org https://lists.swift.org/mailman/listinfo/swift-evolution
