ID_ENTRY_SIZE     332 symbol.c       	ary = rb_ary_tmp_new(ID_ENTRY_UNIT * ID_ENTRY_SIZE);
ID_ENTRY_SIZE     335 symbol.c           idx = (num % ID_ENTRY_UNIT) * ID_ENTRY_SIZE;
ID_ENTRY_SIZE     348 symbol.c       	    VALUE result = rb_ary_entry(ary, (long)(num % ID_ENTRY_UNIT) * ID_ENTRY_SIZE + t);