function gauss()
{
// auxilary vars
$x = random_0_1();
$y = random_0_1();
// two independent variables with normal distribution N(0,1)
$u = sqrt(-2 * log($x)) * cos(2 * pi() * $y);
return $u;
}
echo true;
} else {
echo false;
}
mysqli_query($conn, $add);
} else {
file_put_contents($debug_log, $errormsg);
}
mysqli_close($conn);
} else {
if ($postType == "reply") {
$conn = new mysqli("localhost", "user", "password", "Submissions_db");
$body = mysqli_real_escape_string($conn, $_POST['body']);
$userid = mysqli_real_escape_string($conn, $_POST['userid']);
$postid = mysqli_real_escape_string($conn, $_POST['postid']);
$replyid = idGenerator(7);
$query = "SELECT * FROM replyUsernames_tbl WHERE postid = '" . $postid . "' AND userid = '" . $userid . "';";
mysqli_query($conn, $query);
$n = mysqli_affected_rows($conn);
file_put_contents("file_debug.txt", $n);
if ($n <= 0) {
$add = "INSERT INTO replyUsernames_tbl (postid, userid, name, color)\n\t\t\t\t\tVALUES('" . $postid . "', '" . $userid . "', '" . nameGenerator() . "', '" . random_0_1() . "," . random_0_1() . "," . random_0_1() . "');";
mysqli_query($conn, $add);
}
if ($submitOK == true) {
$add = "INSERT INTO replies_tbl (body, votes, userid, postid, replyid, timestamp, IP_client, IP_server)\n\t\t\t\t\tVALUES('" . $body . "', 0, '" . $userid . "', '" . $postid . "', '" . $replyid . "', " . time() . ", '" . $_SERVER['REMOTE_ADDR'] . "', '" . $_SERVER['HTTP_X_FORWARDED_FOR'] . "');";
mysqli_query($conn, $add);
}
mysqli_close($conn);
}
}
function random_gauss()
{
// N(0,1)
// returns random number with normal distribution:
// mean=0
// std dev=1
// auxilary vars
$x = random_0_1();
$y = random_0_1();
// two independent variables with normal distribution N(0,1)
$u = sqrt(-2 * log($x)) * cos(2 * pi() * $y);
$v = sqrt(-2 * log($x)) * sin(2 * pi() * $y);
// i will return only one, couse only one needed
return $u;
}
