Line data    Source code

       1             : /*
       2             :  * Copyright (c) 1999 Kungliga Tekniska Högskolan
       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             : /* $Id$ */
      34             : 
      35             : /* stuff in common between md4, md5, and sha1 */
      36             : 
      37             : #ifndef __hash_h__
      38             : #define __hash_h__
      39             : 
      40             : #ifdef KRB5
      41             : #include <krb5-types.h>
      42             : #endif
      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             : 
      61             : static inline uint32_t
      62 >80924*10^7 : cshift (uint32_t x, unsigned int n)
      63             : {
      64 >80924*10^7 :     x = CRAYFIX(x);
      65 >80917*10^7 :     return CRAYFIX((x << n) | (x >> (32 - n)));
      66             : }
      67             : 
      68             : static inline uint64_t
      69        6464 : cshift64 (uint64_t x, unsigned int n)
      70             : {
      71        6464 :   return ((uint64_t)x << (uint64_t)n) | ((uint64_t)x >> ((uint64_t)64 - (uint64_t)n));
      72             : }
      73             : 
      74             : #endif /* __hash_h__ */