Curiosity regarding implementation details of SkMatrix::Poly4Proc

[Alexandru-Gabriel Ică]

Hi everyone!

I was reading the source of SkMatrix::setPolyToPoly and inside Poly4Proc I noticed lines like this one:

/* check if abs(x2) > abs(y2) */
if (x2 > 0 ? y2 > 0 ? x2 > y2 : x2 > -y2 : y2 > 0 ? -x2 > y2 : x2 < y2)

Is there any particular reason why the standard abs() function is not used here, like in the comment?

Thank you.

[Florin Malita]

There's no good reason in this day and age.

That code is ancient though, who knows what platform/library restrictions it was targeting at the time.

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