1 /* 2 * Copyright (c) 1983 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 * 17 * @(#)value.h 3.7 (Berkeley) 06/29/88 18 */ 19 20 struct value { 21 char v_type; 22 union { 23 int V_num; 24 char *V_str; 25 } v_un; 26 }; 27 #define v_num v_un.V_num 28 #define v_str v_un.V_str 29 30 #define V_NUM 1 31 #define V_STR 2 32 #define V_ERR 3 33 34 #define val_free(v) ((v).v_type == V_STR ? str_free((v).v_str) : 0) 35