Method val_real

sql/item.h:2303–2307

  Item_hex_string(const char *str,uint str_length);
  enum Type type() const { return VARBIN_ITEM; }
  double val_real()
  { 
    DBUG_ASSERT(fixed == 1); 
    return (double) (ulonglong) Item_hex_string::val_int();
  }
  longlong val_int();
  bool basic_const_item() const { return 1; }
  String *val_str(String*) { DBUG_ASSERT(fixed == 1); return &str_value; }