note 119504 added to math.constants

Although INF can be used for comparison against normal numbers and as a directed number, and behaves as reciprocal of zero, it is not like limit INF tends to infinity. These operations do not work: <?php var_dump(INF / INF); // float(NAN) var_dump(INF - INF); // float(NAN) ?> However, it works with arc-tangent: <?php var_dump(atan(INF) / M_PI); // float(0.5) var_dump(atan2(INF, INF) / M_PI); // float(0.25) var_dump(atan2(1, INF) / M_PI); // float(0) ?> ---- Server IP: 72.52.91.14 Probable Submitter: 14.199.240.179 ---- Manual Page -- http://php.net/manual/en/math.constants.php Edit -- https://master.php.net/note/edit/119504 Del: integrated -- https://master.php.net/note/delete/119504/integrated Del: useless -- https://master.php.net/note/delete/119504/useless Del: bad code -- https://master.php.net/note/delete/119504/bad+code Del: spam -- https://master.php.net/note/delete/119504/spam Del: non-english -- https://master.php.net/note/delete/119504/non-english Del: in docs -- https://master.php.net/note/delete/119504/in+docs Del: other reasons-- https://master.php.net/note/delete/119504 Reject -- https://master.php.net/note/reject/119504 Search -- https://master.php.net/manage/user-notes.php