WFL> On 1/14/14, Bill Gosper <billgosper@gmail.com> wrote: On 2013-12-06, at 9:36 AM, Adam P. Goucher wrote: Half-integers are rounded to the nearest even integer. Exercise: Write Round using only Floor, +, -, *, /, and of course, \[NotHumpDownHump]. --rwg (And please stay off the nonEuclidean parallel bars.) And what the San-Fairy-Ann does a \[NotHumpDownHump] look like --- assuming it can be persuaded to remain stationary for a period extended sufficiently to permit visual identification? <WFL Two squat Ωs humping belly-to-belly, under a slash to be more salacious. I can't find a UTF8(!), but unslashed is ≎. It's code 53 in http://www.dessci.com/en/support/mathtype/tech/encodings/mathmat3.htm "not geometrically equivalent". --rwg WFL> SPOILER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x -> 2[(2 x + 1)/4] WFL