So what if x > MAXNUMBER/2 ? Also, how can this be faster than x=0-x; ? | Hacker News

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joosteto on Jan 20, 2018 | parent | context | favorite | on: GG-flip: simplest and most efficient ways to flip ...

So what if x > MAXNUMBER/2 ?

Also, how can this be faster than x=0-x; ?

infogulch on Jan 20, 2018 | [–]

This took me a second to realize this is satire too.

jwilk on Jan 20, 2018 | | [–]

It's a joke. And yeah, it gives wrong answers for some numbers.

BTW, JS has unary minus, so you can write:

    x = -x

IncRnd on Jan 21, 2018 | [–]

I think the author chose a more efficient table-driven approach, due to the extra 0 in your 0-x expression.

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