| 1 | /* $NetBSD: ext2fs_hash.h,v 1.1 2016/06/24 17:21:30 christos Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2016 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 17 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 18 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 19 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 20 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 26 | * POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | #ifndef _EXT2FS_HASH_H_ |
| 29 | #define _EXT2FS_HASH_H_ |
| 30 | |
| 31 | /* F, G, and H are MD4 functions */ |
| 32 | #define F(x, y, z) (((x) & (y)) | ((~x) & (z))) |
| 33 | #define G(x, y, z) (((x) & (y)) | ((x) & (z)) | ((y) & (z))) |
| 34 | #define H(x, y, z) ((x) ^ (y) ^ (z)) |
| 35 | |
| 36 | /* ROTATE_LEFT rotates x left n bits */ |
| 37 | #define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32 - (n)))) |
| 38 | |
| 39 | #endif /* _EXT2FS_HASH_H_ */ |
| 40 | |