1 /* $NetBSD: hash.h,v 1.1.1.2 2011/04/14 14:08:32 elric Exp $ */ 2 3 /* 4 * Copyright (c) 1999 Kungliga Tekniska Högskolan 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 64 static inline uint32_t 65 cshift (uint32_t x, unsigned int n) 66 { 67 x = CRAYFIX(x); 68 return CRAYFIX((x << n) | (x >> (32 - n))); 69 } 70 71 static inline uint64_t 72 cshift64 (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