1/*
2 * Copyright (c) 1999 Kungliga Tekniska H�gskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * 3. Neither the name of KTH nor the names of its contributors may be
18 *    used to endorse or promote products derived from this software without
19 *    specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY KTH AND ITS CONTRIBUTORS ``AS IS'' AND ANY
22 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KTH OR ITS CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
28 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
32
33/* $Heimdal: hash.h,v 1.1 1999/03/22 19:16:25 joda Exp $
34   $NetBSD: hash.h,v 1.1.1.3 2002/09/12 12:41:42 joda Exp $ */
35
36/* stuff in common between md4, md5, and sha1 */
37
38#ifndef __hash_h__
39#define __hash_h__
40
41#include <stdlib.h>
42#include <string.h>
43
44#ifndef min
45#define min(a,b) (((a)>(b))?(b):(a))
46#endif
47
48/* Vector Crays doesn't have a good 32-bit type, or more precisely,
49   int32_t as defined by <bind/bitypes.h> isn't 32 bits, and we don't
50   want to depend in being able to redefine this type.  To cope with
51   this we have to clamp the result in some places to [0,2^32); no
52   need to do this on other machines.  Did I say this was a mess?
53   */
54
55#ifdef _CRAY
56#define CRAYFIX(X) ((X) & 0xffffffff)
57#else
58#define CRAYFIX(X) (X)
59#endif
60
61static inline u_int32_t
62cshift (u_int32_t x, unsigned int n)
63{
64    x = CRAYFIX(x);
65    return CRAYFIX((x << n) | (x >> (32 - n)));
66}
67
68#endif /* __hash_h__ */
69