* Copyright (c) 1983 Regents of the University of California,
* All rights reserved. Redistribution permitted subject to
* the terms of the Berkeley Software License Agreement.
#define str_cmp(a, b) strcmp(a, b)
#define str_offset ((unsigned)str_head.s_data - (unsigned)&str_head)
#define str_stos(s) ((struct string *)((unsigned)(s) - str_offset))
#define str_free(s) free(s)
#define str_alloc(s) malloc(s)