Installation error

SQL query:

DELIMITER ; ;

CREATE DEFINER = `root`@`localhost` FUNCTION `__mydiv` (
`a` int,
`b` int
) RETURNS bigint( 20 ) BEGIN
RETURN FLOOR( a / b ) ;

END ; ;

MySQL said: Documentation
#1418 - This function has none of DETERMINISTIC, NO SQL, or READS SQL DATA in its declaration and binary logging is enabled (you _might_ want to use the less safe log_bin_trust_function_creators variable)
