note 39858 added to function.rand

if rand() can only give us a range of (0, 32767), then even if we invert the random number and multiply it with a bigger number, we will still not do the bigger number honour since only 32768 of those numbers will ever turn up. don't know how more accurate this is, but i tried doing this for big(ger) random numbers - function frand () { # returns a random 30-bit float # workaround rand() which seems to manage only # (0, 32767) on some systems # // put together 2 15-bit numbers // we need to do this cos otherwise the inverse // of the random number we get wouldn't give us // a random number space big enough to do multiplication // against a 30-bit number. $r1 = rand(0, 32767) << rand(0, 15); $r2 = rand(0, 32767); return (double) (1/($r1 + $r2)) ; } ---- Manual Page -- http://www.php.net/manual/en/function.rand.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+39858 Delete -- http://master.php.net/manage/user-notes.php?action=delete+39858&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+39858&report=yes Search -- http://master.php.net/manage/user-notes.php