Online PHP editor | refs for EdclV

<?php function isEqual($a, $b, $epsilon = 1e-10) { if ( float($a) == float($b) ) // handles infinites return true; if ( (float)$a * (float)$b == 0 ) // a or b or both are zero return abs((float)$a - (float)$b) < ( $epsilon * $epsilon ); return (abs((float)$a - (float)$b) / (abs((float)$a) + abs((float)$b))) < $epsilon; } for ( $i = 0; $i < 10000; $i++ ) isEqual(0.000001, 0.000001);