1/*	$NetBSD$	*/
2
3/*
4 * Copyright (c) 1999 Kungliga Tekniska H��gskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of KTH nor the names of its contributors may be
20 *    used to endorse or promote products derived from this software without
21 *    specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY KTH AND ITS CONTRIBUTORS ``AS IS'' AND ANY
24 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KTH OR ITS CONTRIBUTORS BE
27 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
30 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
31 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
32 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
34
35/* Id */
36
37/* stuff in common between md4, md5, and sha1 */
38
39#ifndef __hash_h__
40#define __hash_h__
41
42#ifdef KRB5
43#include <krb5/krb5-types.h>
44#endif
45#include <krb5/roken.h>
46
47#ifndef min
48#define min(a,b) (((a)>(b))?(b):(a))
49#endif
50
51/* Vector Crays doesn't have a good 32-bit type, or more precisely,
52   int32_t as defined by <bind/bitypes.h> isn't 32 bits, and we don't
53   want to depend in being able to redefine this type.  To cope with
54   this we have to clamp the result in some places to [0,2^32); no
55   need to do this on other machines.  Did I say this was a mess?
56   */
57
58#ifdef _CRAY
59#define CRAYFIX(X) ((X) & 0xffffffff)
60#else
61#define CRAYFIX(X) (X)
62#endif
63
64static inline uint32_t
65cshift (uint32_t x, unsigned int n)
66{
67    x = CRAYFIX(x);
68    return CRAYFIX((x << n) | (x >> (32 - n)));
69}
70
71static inline uint64_t
72cshift64 (uint64_t x, unsigned int n)
73{
74  return ((uint64_t)x << (uint64_t)n) | ((uint64_t)x >> ((uint64_t)64 - (uint64_t)n));
75}
76
77#endif /* __hash_h__ */
78