/*
* Copyright (c) 2012, Jonathan Schleifer <js@webkeks.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __COREFW_HASH_H__
#define __COREFW_HASH_H__
#define CFW_HASH_INIT(hash) hash = 0
#define CFW_HASH_ADD(hash, byte) \
{ \
hash += (uint8_t)byte; \
hash += (hash << 10); \
hash ^= (hash >> 6); \
}
#define CFW_HASH_FINALIZE(hash) \
{ \
hash += (hash << 3); \
hash ^= (hash >> 11); \
hash += (hash << 15); \
}
#define CFW_HASH_ADD_HASH(hash, other_) \
{ \
uint32_t other = other_; \
CFW_HASH_ADD(hash, (other >> 24) & 0xFF); \
CFW_HASH_ADD(hash, (other >> 16) & 0xFF); \
CFW_HASH_ADD(hash, (other >> 8) & 0xFF); \
CFW_HASH_ADD(hash, other & 0xFF); \
}
#endif