> On Feb 21, 2017, at 20:46, Xiaodi Wu via swift-evolution > <[email protected]> wrote: > > Sign, perhaps, can be thought of as "part of a number," but signum refers to > the signum function (http://en.wikipedia.org/wiki/Sign_function) defined as: > > -1 if x < 0 > 0 if x = 0 > 1 if x > 0 > > 1 isn't really "part of" 42, for instance, at least not in the sense that 42 > and + are "part of" 42.
Should it be a stand-alone function, then? - Dave Sweeris
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