4.3BSD - /usr/src/ucb/window/value.h

   1: /*
   2:  * @(#)value.h	3.5 4/24/85
   3:  */
   4: 
   5: /*
   6:  * Copyright (c) 1983 Regents of the University of California,
   7:  * All rights reserved.  Redistribution permitted subject to
   8:  * the terms of the Berkeley Software License Agreement.
   9:  */
  10: 
  11: struct value {
  12:     char v_type;
  13:     union {
  14:         int V_num;
  15:         char *V_str;
  16:     } v_un;
  17: };
  18: #define v_num   v_un.V_num
  19: #define v_str   v_un.V_str
  20: 
  21: #define V_NUM   1
  22: #define V_STR   2
  23: #define V_ERR   3
  24: 
  25: #define val_free(v) ((v).v_type == V_STR ? str_free((v).v_str) : 0)

Defined struct's

Defined macros

Usage of this include