return ($rating, $rd);
}
-sub combine_ratings {
- my ($rating1, $rd1, $rating2, $rd2) = @_;
-
- my $rating_team = 0.5 * ($rating1 + $rating2);
- my $rd_team = sqrt($rd1 * $rd1 + $rd2 * $rd2) / sqrt(2.0);
- return ($rating_team, $rd_team);
-}
-
sub create_user_if_not_exists {
my ($dbh, $username) = @_;
my $count = $dbh->selectrow_array('SELECT count(*) FROM users WHERE username=?',