note 58653 deleted from function.abs by hholzgra

Note Submitter: rdk ---- concordia, you seem to be overcomplicating matters. If you want to do the reverse of the abs function, the only code required is: <?php function n_abs($num) { return ($num > 0) ? $num * -1 : $num; } n_abs(2); //-2 n_abs(-2); //-2 ?> If you want to switch the sign bit of a number, as your example seems to indicate... turn_neg (2); // -2 turn_neg (-2); // 2 ...you just need to do $num *= -1; Your function also doesn't seem to work. Switching "if (is_neg ($num))" to "if (!is_neg ($num))" would make it function as indicated by your comments (i.e. toggle the sign bit), but it would still be overly complicated.