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BSD 4.3

/*
 * @(#)string.h	3.5 4/24/85
 */

/*
 * 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_DEBUG

char *str_cpy();
char *str_ncpy();
char *str_cat();
char *str_itoa();

#define str_cmp(a, b)	strcmp(a, b)

#ifdef STR_DEBUG
struct string {
	struct string *s_forw;
	struct string *s_back;
	char s_data[1];
};

struct string str_head;

#define str_offset ((unsigned)str_head.s_data - (unsigned)&str_head)
#define str_stos(s) ((struct string *)((unsigned)(s) - str_offset))

char *str_alloc();
int str_free();
#else
#define str_free(s)	free(s)
#define str_alloc(s)	malloc(s)
#endif

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