Shipwright/libultraship/libultraship/Lib/StrHash64.cpp
M4xw d24c8453db git subrepo clone https://github.com/HarbourMasters/libultraship.git
subrepo:
  subdir:   "libultraship"
  merged:   "a484cda98"
upstream:
  origin:   "https://github.com/HarbourMasters/libultraship.git"
  branch:   "main"
  commit:   "a484cda98"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"
2022-03-22 02:52:44 +01:00

250 lines
12 KiB
C++

/*
* Below are the various copyright notices from the original source.
* <http://www.mirrorservice.org/sites/download.sourceforge.net/pub/
* sourceforge/l/li/libcore/libcore_0.22.7.tar.gz/libcore/lib/hash/Crc.cpp>
*
* The source has be substationally modified:
* 1. Unneeded code has been deleted.
* 2. The code was converted from C++ to C.
* 3. Routines optimized for hashing were added.
*/
///////////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2006 Anton Samokhvalov
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
///////////////////////////////////////////////////////////////////////////////////
/*
[To some parts of this code]
*/
/*
Copyright (C) 1995-2004 Jean-loup Gailly and Mark Adler
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
Jean-loup Gailly Mark Adler
jloup@gzip.org madler@alumni.caltech.edu
*/
/*
[To some parts of this code]
*/
/*
Copyright (c) 2003, Dominik Reichl <dominik.reichl@t-online.de>
All rights reserved.
LICENSE TERMS
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* 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.
* Neither the name of ReichlSoft nor the names of its contributors may be used
to endorse or promote products derived from this software without specific
prior written permission.
DISCLAIMER
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.
*/
#include <stdint.h>
#define u8 uint8_t
#define u16 uint16_t
#define u32 uint32_t
#define u64 uint64_t
#define unint uint32_t
#define INITIAL_CRC64 0xffffffffffffffffULL
#define CONST64(n) n##ull
static const u64 CRC64_Table[256] = {
CONST64(0x0000000000000000), CONST64(0x42f0e1eba9ea3693),
CONST64(0x85e1c3d753d46d26), CONST64(0xc711223cfa3e5bb5),
CONST64(0x493366450e42ecdf), CONST64(0x0bc387aea7a8da4c),
CONST64(0xccd2a5925d9681f9), CONST64(0x8e224479f47cb76a),
CONST64(0x9266cc8a1c85d9be), CONST64(0xd0962d61b56fef2d),
CONST64(0x17870f5d4f51b498), CONST64(0x5577eeb6e6bb820b),
CONST64(0xdb55aacf12c73561), CONST64(0x99a54b24bb2d03f2),
CONST64(0x5eb4691841135847), CONST64(0x1c4488f3e8f96ed4),
CONST64(0x663d78ff90e185ef), CONST64(0x24cd9914390bb37c),
CONST64(0xe3dcbb28c335e8c9), CONST64(0xa12c5ac36adfde5a),
CONST64(0x2f0e1eba9ea36930), CONST64(0x6dfeff5137495fa3),
CONST64(0xaaefdd6dcd770416), CONST64(0xe81f3c86649d3285),
CONST64(0xf45bb4758c645c51), CONST64(0xb6ab559e258e6ac2),
CONST64(0x71ba77a2dfb03177), CONST64(0x334a9649765a07e4),
CONST64(0xbd68d2308226b08e), CONST64(0xff9833db2bcc861d),
CONST64(0x388911e7d1f2dda8), CONST64(0x7a79f00c7818eb3b),
CONST64(0xcc7af1ff21c30bde), CONST64(0x8e8a101488293d4d),
CONST64(0x499b3228721766f8), CONST64(0x0b6bd3c3dbfd506b),
CONST64(0x854997ba2f81e701), CONST64(0xc7b97651866bd192),
CONST64(0x00a8546d7c558a27), CONST64(0x4258b586d5bfbcb4),
CONST64(0x5e1c3d753d46d260), CONST64(0x1cecdc9e94ace4f3),
CONST64(0xdbfdfea26e92bf46), CONST64(0x990d1f49c77889d5),
CONST64(0x172f5b3033043ebf), CONST64(0x55dfbadb9aee082c),
CONST64(0x92ce98e760d05399), CONST64(0xd03e790cc93a650a),
CONST64(0xaa478900b1228e31), CONST64(0xe8b768eb18c8b8a2),
CONST64(0x2fa64ad7e2f6e317), CONST64(0x6d56ab3c4b1cd584),
CONST64(0xe374ef45bf6062ee), CONST64(0xa1840eae168a547d),
CONST64(0x66952c92ecb40fc8), CONST64(0x2465cd79455e395b),
CONST64(0x3821458aada7578f), CONST64(0x7ad1a461044d611c),
CONST64(0xbdc0865dfe733aa9), CONST64(0xff3067b657990c3a),
CONST64(0x711223cfa3e5bb50), CONST64(0x33e2c2240a0f8dc3),
CONST64(0xf4f3e018f031d676), CONST64(0xb60301f359dbe0e5),
CONST64(0xda050215ea6c212f), CONST64(0x98f5e3fe438617bc),
CONST64(0x5fe4c1c2b9b84c09), CONST64(0x1d14202910527a9a),
CONST64(0x93366450e42ecdf0), CONST64(0xd1c685bb4dc4fb63),
CONST64(0x16d7a787b7faa0d6), CONST64(0x5427466c1e109645),
CONST64(0x4863ce9ff6e9f891), CONST64(0x0a932f745f03ce02),
CONST64(0xcd820d48a53d95b7), CONST64(0x8f72eca30cd7a324),
CONST64(0x0150a8daf8ab144e), CONST64(0x43a04931514122dd),
CONST64(0x84b16b0dab7f7968), CONST64(0xc6418ae602954ffb),
CONST64(0xbc387aea7a8da4c0), CONST64(0xfec89b01d3679253),
CONST64(0x39d9b93d2959c9e6), CONST64(0x7b2958d680b3ff75),
CONST64(0xf50b1caf74cf481f), CONST64(0xb7fbfd44dd257e8c),
CONST64(0x70eadf78271b2539), CONST64(0x321a3e938ef113aa),
CONST64(0x2e5eb66066087d7e), CONST64(0x6cae578bcfe24bed),
CONST64(0xabbf75b735dc1058), CONST64(0xe94f945c9c3626cb),
CONST64(0x676dd025684a91a1), CONST64(0x259d31cec1a0a732),
CONST64(0xe28c13f23b9efc87), CONST64(0xa07cf2199274ca14),
CONST64(0x167ff3eacbaf2af1), CONST64(0x548f120162451c62),
CONST64(0x939e303d987b47d7), CONST64(0xd16ed1d631917144),
CONST64(0x5f4c95afc5edc62e), CONST64(0x1dbc74446c07f0bd),
CONST64(0xdaad56789639ab08), CONST64(0x985db7933fd39d9b),
CONST64(0x84193f60d72af34f), CONST64(0xc6e9de8b7ec0c5dc),
CONST64(0x01f8fcb784fe9e69), CONST64(0x43081d5c2d14a8fa),
CONST64(0xcd2a5925d9681f90), CONST64(0x8fdab8ce70822903),
CONST64(0x48cb9af28abc72b6), CONST64(0x0a3b7b1923564425),
CONST64(0x70428b155b4eaf1e), CONST64(0x32b26afef2a4998d),
CONST64(0xf5a348c2089ac238), CONST64(0xb753a929a170f4ab),
CONST64(0x3971ed50550c43c1), CONST64(0x7b810cbbfce67552),
CONST64(0xbc902e8706d82ee7), CONST64(0xfe60cf6caf321874),
CONST64(0xe224479f47cb76a0), CONST64(0xa0d4a674ee214033),
CONST64(0x67c58448141f1b86), CONST64(0x253565a3bdf52d15),
CONST64(0xab1721da49899a7f), CONST64(0xe9e7c031e063acec),
CONST64(0x2ef6e20d1a5df759), CONST64(0x6c0603e6b3b7c1ca),
CONST64(0xf6fae5c07d3274cd), CONST64(0xb40a042bd4d8425e),
CONST64(0x731b26172ee619eb), CONST64(0x31ebc7fc870c2f78),
CONST64(0xbfc9838573709812), CONST64(0xfd39626eda9aae81),
CONST64(0x3a28405220a4f534), CONST64(0x78d8a1b9894ec3a7),
CONST64(0x649c294a61b7ad73), CONST64(0x266cc8a1c85d9be0),
CONST64(0xe17dea9d3263c055), CONST64(0xa38d0b769b89f6c6),
CONST64(0x2daf4f0f6ff541ac), CONST64(0x6f5faee4c61f773f),
CONST64(0xa84e8cd83c212c8a), CONST64(0xeabe6d3395cb1a19),
CONST64(0x90c79d3fedd3f122), CONST64(0xd2377cd44439c7b1),
CONST64(0x15265ee8be079c04), CONST64(0x57d6bf0317edaa97),
CONST64(0xd9f4fb7ae3911dfd), CONST64(0x9b041a914a7b2b6e),
CONST64(0x5c1538adb04570db), CONST64(0x1ee5d94619af4648),
CONST64(0x02a151b5f156289c), CONST64(0x4051b05e58bc1e0f),
CONST64(0x87409262a28245ba), CONST64(0xc5b073890b687329),
CONST64(0x4b9237f0ff14c443), CONST64(0x0962d61b56fef2d0),
CONST64(0xce73f427acc0a965), CONST64(0x8c8315cc052a9ff6),
CONST64(0x3a80143f5cf17f13), CONST64(0x7870f5d4f51b4980),
CONST64(0xbf61d7e80f251235), CONST64(0xfd913603a6cf24a6),
CONST64(0x73b3727a52b393cc), CONST64(0x31439391fb59a55f),
CONST64(0xf652b1ad0167feea), CONST64(0xb4a25046a88dc879),
CONST64(0xa8e6d8b54074a6ad), CONST64(0xea16395ee99e903e),
CONST64(0x2d071b6213a0cb8b), CONST64(0x6ff7fa89ba4afd18),
CONST64(0xe1d5bef04e364a72), CONST64(0xa3255f1be7dc7ce1),
CONST64(0x64347d271de22754), CONST64(0x26c49cccb40811c7),
CONST64(0x5cbd6cc0cc10fafc), CONST64(0x1e4d8d2b65facc6f),
CONST64(0xd95caf179fc497da), CONST64(0x9bac4efc362ea149),
CONST64(0x158e0a85c2521623), CONST64(0x577eeb6e6bb820b0),
CONST64(0x906fc95291867b05), CONST64(0xd29f28b9386c4d96),
CONST64(0xcedba04ad0952342), CONST64(0x8c2b41a1797f15d1),
CONST64(0x4b3a639d83414e64), CONST64(0x09ca82762aab78f7),
CONST64(0x87e8c60fded7cf9d), CONST64(0xc51827e4773df90e),
CONST64(0x020905d88d03a2bb), CONST64(0x40f9e43324e99428),
CONST64(0x2cffe7d5975e55e2), CONST64(0x6e0f063e3eb46371),
CONST64(0xa91e2402c48a38c4), CONST64(0xebeec5e96d600e57),
CONST64(0x65cc8190991cb93d), CONST64(0x273c607b30f68fae),
CONST64(0xe02d4247cac8d41b), CONST64(0xa2dda3ac6322e288),
CONST64(0xbe992b5f8bdb8c5c), CONST64(0xfc69cab42231bacf),
CONST64(0x3b78e888d80fe17a), CONST64(0x7988096371e5d7e9),
CONST64(0xf7aa4d1a85996083), CONST64(0xb55aacf12c735610),
CONST64(0x724b8ecdd64d0da5), CONST64(0x30bb6f267fa73b36),
CONST64(0x4ac29f2a07bfd00d), CONST64(0x08327ec1ae55e69e),
CONST64(0xcf235cfd546bbd2b), CONST64(0x8dd3bd16fd818bb8),
CONST64(0x03f1f96f09fd3cd2), CONST64(0x41011884a0170a41),
CONST64(0x86103ab85a2951f4), CONST64(0xc4e0db53f3c36767),
CONST64(0xd8a453a01b3a09b3), CONST64(0x9a54b24bb2d03f20),
CONST64(0x5d45907748ee6495), CONST64(0x1fb5719ce1045206),
CONST64(0x919735e51578e56c), CONST64(0xd367d40ebc92d3ff),
CONST64(0x1476f63246ac884a), CONST64(0x568617d9ef46bed9),
CONST64(0xe085162ab69d5e3c), CONST64(0xa275f7c11f7768af),
CONST64(0x6564d5fde549331a), CONST64(0x279434164ca30589),
CONST64(0xa9b6706fb8dfb2e3), CONST64(0xeb46918411358470),
CONST64(0x2c57b3b8eb0bdfc5), CONST64(0x6ea7525342e1e956),
CONST64(0x72e3daa0aa188782), CONST64(0x30133b4b03f2b111),
CONST64(0xf7021977f9cceaa4), CONST64(0xb5f2f89c5026dc37),
CONST64(0x3bd0bce5a45a6b5d), CONST64(0x79205d0e0db05dce),
CONST64(0xbe317f32f78e067b), CONST64(0xfcc19ed95e6430e8),
CONST64(0x86b86ed5267cdbd3), CONST64(0xc4488f3e8f96ed40),
CONST64(0x0359ad0275a8b6f5), CONST64(0x41a94ce9dc428066),
CONST64(0xcf8b0890283e370c), CONST64(0x8d7be97b81d4019f),
CONST64(0x4a6acb477bea5a2a), CONST64(0x089a2aacd2006cb9),
CONST64(0x14dea25f3af9026d), CONST64(0x562e43b4931334fe),
CONST64(0x913f6188692d6f4b), CONST64(0xd3cf8063c0c759d8),
CONST64(0x5dedc41a34bbeeb2), CONST64(0x1f1d25f19d51d821),
CONST64(0xd80c07cd676f8394), CONST64(0x9afce626ce85b507)
};
uint64_t update_crc64(const void* buf, unint len, u64 crc)
{
const u8* b = (const u8*)buf;
unint i;
for (i = 0; i < len; i++) {
crc = CRC64_Table[(u8)(crc >> 56) ^ *b++] ^ (crc << 8);
}
return ~crc;
}
u64 crc64(const void* buf, unint len)
{
return update_crc64(buf, len, INITIAL_CRC64);
}
u64 CRC64(const char* t)
{
u64 crc = INITIAL_CRC64;
const u8* s = (const u8*)t;
while (*s) {
crc = CRC64_Table[(u8)(crc >> 56) ^ *s++] ^ (crc << 8);
}
return crc;
}