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1/* $OpenBSD: stack.h,v 1.11 2024/03/02 11:20:36 tb Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#ifndef HEADER_STACK_H
60#define HEADER_STACK_H
61
62#ifdef __cplusplus
63extern "C" {
64#endif
65
66typedef struct stack_st _STACK;
67
68#define M_sk_num(sk) ((sk) ? (sk)->num:-1)
69#define M_sk_value(sk,n) ((sk) ? (sk)->data[n] : NULL)
70
71int sk_num(const _STACK *);
72void *sk_value(const _STACK *, int);
73
74void *sk_set(_STACK *, int, void *);
75
76_STACK *sk_new(int (*cmp)(const void *, const void *));
77_STACK *sk_new_null(void);
78void sk_free(_STACK *);
79void sk_pop_free(_STACK *st, void (*func)(void *));
80int sk_insert(_STACK *sk, void *data, int where);
81void *sk_delete(_STACK *st, int loc);
82void *sk_delete_ptr(_STACK *st, void *p);
83int sk_find(_STACK *st, void *data);
84int sk_push(_STACK *st, void *data);
85int sk_unshift(_STACK *st, void *data);
86void *sk_shift(_STACK *st);
87void *sk_pop(_STACK *st);
88void sk_zero(_STACK *st);
89int (*sk_set_cmp_func(_STACK *sk, int (*c)(const void *, const void *)))(
90 const void *, const void *);
91_STACK *sk_dup(_STACK *st);
92void sk_sort(_STACK *st);
93int sk_is_sorted(const _STACK *st);
94
95#ifdef __cplusplus
96}
97#endif
98
99#endif