Convert a datetime MYSQL_TIME representation to corresponding "struct timeval" value. Things like '0000-01-01', '2000-00-01', '2000-01-00' (i.e. incomplete date) return error. Things like '0000-00-00 10:30:30' or '0000-00-00 00:00:00.123456' (i.e. empty date with non-empty time) return error. Zero datetime '0000-00-00 00:00:00.000000' is allowed and is mapper to {tv_sec=0, tv_usec
source not stored for this graph (policy: none)
no test coverage detected