51 lines
1.0 KiB
C
51 lines
1.0 KiB
C
/* $NetBSD: tree.h,v 1.1.1.1 1999/11/20 18:54:03 veego Exp $ */
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/* tree.h - declare structures used by tree library
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*
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* vix 22jan93 [revisited; uses RCS, ANSI, POSIX; has bug fixes]
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* vix 27jun86 [broken out of tree.c]
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*
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* Id: tree.h,v 8.2 1996/10/25 18:11:03 vixie Exp
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*/
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#ifndef _TREE_H_INCLUDED
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#define _TREE_H_INCLUDED
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#ifndef __P
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# if defined(__STDC__) || defined(__GNUC__)
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# define __P(x) x
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# else
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# define __P(x) ()
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# endif
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#endif
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/*
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* tree_t is our package-specific anonymous pointer.
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*/
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#if defined(__STDC__) || defined(__GNUC__)
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typedef void *tree_t;
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#else
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typedef char *tree_t;
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#endif
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typedef struct tree_s {
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tree_t data;
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struct tree_s *left, *right;
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short bal;
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}
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tree;
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void tree_init __P((tree **));
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tree_t tree_srch __P((tree **, int (*)(), tree_t));
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tree_t tree_add __P((tree **, int (*)(), tree_t, void (*)()));
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int tree_delete __P((tree **, int (*)(), tree_t, void (*)()));
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int tree_trav __P((tree **, int (*)()));
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void tree_mung __P((tree **, void (*)()));
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#endif /* _TREE_H_INCLUDED */
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