note 59648 deleted from function.abs by hholzgra

Note Submitter: jeremys at hang dash wire dot com ---- I'm unable to replicate concordia's problem with the $n = $n - $n * 2 code. I agree with the simplification to $n *= -1. But there's no reason that concordia's code should return 6 for the value -2, and it doesn't appear to. When I tried it, PHP returned 2, as it should. If PHP were somehow flipping the sign of integers randomly, that would be a *major* bug! There doesn't seem to be a sgn() function yet. Here's some quick code to do it: function sgn($x) { return $x ? ($x>0 ? 1 : -1) : 0; } You could use $x ? abs($x)/$x : 0 too, but might as well avoid the float division.