Function my_time_trunc

sql/sql_time.h:156–159

  return nr % (long) log_10_int[DATETIME_MAX_DECIMALS - decimals];
}
inline void my_time_trunc(MYSQL_TIME *ltime, uint decimals)
{
  ltime->second_part-= my_time_fraction_remainder(ltime->second_part, decimals);
}
inline void my_datetime_trunc(MYSQL_TIME *ltime, uint decimals)
{
  return my_time_trunc(ltime, decimals);