pcrc32c.c

/* Copyright (c) 2014 Anton Titov.
 * Copyright (c) 2014 pCloud Ltd.
 * All rights reserved.
 * 
 * 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 pCloud Ltd nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 * 
 * 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 pCloud Ltd 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 "pcrc32c.h"
#include "pcompiler.h"
#include "plibs.h"
#include <string.h>

#if defined(__GNUC__) && (defined(__amd64__) || defined(__x86_64__) || defined(__i386__))
#define CRC32_HW
#define CRC32_GNUC
#elif defined(_MSC_VER)
#include <intrin.h>
#include <nmmintrin.h>
#define CRC32_HW
#define CRC32_MSC
#endif

#ifdef CRC32_HW
#define CRC32_PARALLEL_CHUNK 1360
#endif

static const uint32_t crc32c_table[8][256]={
  {
    0x00000000, 0xf26b8303, 0xe13b70f7, 0x1350f3f4, 0xc79a971f, 0x35f1141c, 0x26a1e7e8, 0xd4ca64eb,
    0x8ad958cf, 0x78b2dbcc, 0x6be22838, 0x9989ab3b, 0x4d43cfd0, 0xbf284cd3, 0xac78bf27, 0x5e133c24,
    0x105ec76f, 0xe235446c, 0xf165b798, 0x030e349b, 0xd7c45070, 0x25afd373, 0x36ff2087, 0xc494a384,
    0x9a879fa0, 0x68ec1ca3, 0x7bbcef57, 0x89d76c54, 0x5d1d08bf, 0xaf768bbc, 0xbc267848, 0x4e4dfb4b,
    0x20bd8ede, 0xd2d60ddd, 0xc186fe29, 0x33ed7d2a, 0xe72719c1, 0x154c9ac2, 0x061c6936, 0xf477ea35,
    0xaa64d611, 0x580f5512, 0x4b5fa6e6, 0xb93425e5, 0x6dfe410e, 0x9f95c20d, 0x8cc531f9, 0x7eaeb2fa,
    0x30e349b1, 0xc288cab2, 0xd1d83946, 0x23b3ba45, 0xf779deae, 0x05125dad, 0x1642ae59, 0xe4292d5a,
    0xba3a117e, 0x4851927d, 0x5b016189, 0xa96ae28a, 0x7da08661, 0x8fcb0562, 0x9c9bf696, 0x6ef07595,
    0x417b1dbc, 0xb3109ebf, 0xa0406d4b, 0x522bee48, 0x86e18aa3, 0x748a09a0, 0x67dafa54, 0x95b17957,
    0xcba24573, 0x39c9c670, 0x2a993584, 0xd8f2b687, 0x0c38d26c, 0xfe53516f, 0xed03a29b, 0x1f682198,
    0x5125dad3, 0xa34e59d0, 0xb01eaa24, 0x42752927, 0x96bf4dcc, 0x64d4cecf, 0x77843d3b, 0x85efbe38,
    0xdbfc821c, 0x2997011f, 0x3ac7f2eb, 0xc8ac71e8, 0x1c661503, 0xee0d9600, 0xfd5d65f4, 0x0f36e6f7,
    0x61c69362, 0x93ad1061, 0x80fde395, 0x72966096, 0xa65c047d, 0x5437877e, 0x4767748a, 0xb50cf789,
    0xeb1fcbad, 0x197448ae, 0x0a24bb5a, 0xf84f3859, 0x2c855cb2, 0xdeeedfb1, 0xcdbe2c45, 0x3fd5af46,
    0x7198540d, 0x83f3d70e, 0x90a324fa, 0x62c8a7f9, 0xb602c312, 0x44694011, 0x5739b3e5, 0xa55230e6,
    0xfb410cc2, 0x092a8fc1, 0x1a7a7c35, 0xe811ff36, 0x3cdb9bdd, 0xceb018de, 0xdde0eb2a, 0x2f8b6829,
    0x82f63b78, 0x709db87b, 0x63cd4b8f, 0x91a6c88c, 0x456cac67, 0xb7072f64, 0xa457dc90, 0x563c5f93,
    0x082f63b7, 0xfa44e0b4, 0xe9141340, 0x1b7f9043, 0xcfb5f4a8, 0x3dde77ab, 0x2e8e845f, 0xdce5075c,
    0x92a8fc17, 0x60c37f14, 0x73938ce0, 0x81f80fe3, 0x55326b08, 0xa759e80b, 0xb4091bff, 0x466298fc,
    0x1871a4d8, 0xea1a27db, 0xf94ad42f, 0x0b21572c, 0xdfeb33c7, 0x2d80b0c4, 0x3ed04330, 0xccbbc033,
    0xa24bb5a6, 0x502036a5, 0x4370c551, 0xb11b4652, 0x65d122b9, 0x97baa1ba, 0x84ea524e, 0x7681d14d,
    0x2892ed69, 0xdaf96e6a, 0xc9a99d9e, 0x3bc21e9d, 0xef087a76, 0x1d63f975, 0x0e330a81, 0xfc588982,
    0xb21572c9, 0x407ef1ca, 0x532e023e, 0xa145813d, 0x758fe5d6, 0x87e466d5, 0x94b49521, 0x66df1622,
    0x38cc2a06, 0xcaa7a905, 0xd9f75af1, 0x2b9cd9f2, 0xff56bd19, 0x0d3d3e1a, 0x1e6dcdee, 0xec064eed,
    0xc38d26c4, 0x31e6a5c7, 0x22b65633, 0xd0ddd530, 0x0417b1db, 0xf67c32d8, 0xe52cc12c, 0x1747422f,
    0x49547e0b, 0xbb3ffd08, 0xa86f0efc, 0x5a048dff, 0x8ecee914, 0x7ca56a17, 0x6ff599e3, 0x9d9e1ae0,
    0xd3d3e1ab, 0x21b862a8, 0x32e8915c, 0xc083125f, 0x144976b4, 0xe622f5b7, 0xf5720643, 0x07198540,
    0x590ab964, 0xab613a67, 0xb831c993, 0x4a5a4a90, 0x9e902e7b, 0x6cfbad78, 0x7fab5e8c, 0x8dc0dd8f,
    0xe330a81a, 0x115b2b19, 0x020bd8ed, 0xf0605bee, 0x24aa3f05, 0xd6c1bc06, 0xc5914ff2, 0x37faccf1,
    0x69e9f0d5, 0x9b8273d6, 0x88d28022, 0x7ab90321, 0xae7367ca, 0x5c18e4c9, 0x4f48173d, 0xbd23943e,
    0xf36e6f75, 0x0105ec76, 0x12551f82, 0xe03e9c81, 0x34f4f86a, 0xc69f7b69, 0xd5cf889d, 0x27a40b9e,
    0x79b737ba, 0x8bdcb4b9, 0x988c474d, 0x6ae7c44e, 0xbe2da0a5, 0x4c4623a6, 0x5f16d052, 0xad7d5351
  },
  {
    0x00000000, 0x13a29877, 0x274530ee, 0x34e7a899, 0x4e8a61dc, 0x5d28f9ab, 0x69cf5132, 0x7a6dc945,
    0x9d14c3b8, 0x8eb65bcf, 0xba51f356, 0xa9f36b21, 0xd39ea264, 0xc03c3a13, 0xf4db928a, 0xe7790afd,
    0x3fc5f181, 0x2c6769f6, 0x1880c16f, 0x0b225918, 0x714f905d, 0x62ed082a, 0x560aa0b3, 0x45a838c4,
    0xa2d13239, 0xb173aa4e, 0x859402d7, 0x96369aa0, 0xec5b53e5, 0xfff9cb92, 0xcb1e630b, 0xd8bcfb7c,
    0x7f8be302, 0x6c297b75, 0x58ced3ec, 0x4b6c4b9b, 0x310182de, 0x22a31aa9, 0x1644b230, 0x05e62a47,
    0xe29f20ba, 0xf13db8cd, 0xc5da1054, 0xd6788823, 0xac154166, 0xbfb7d911, 0x8b507188, 0x98f2e9ff,
    0x404e1283, 0x53ec8af4, 0x670b226d, 0x74a9ba1a, 0x0ec4735f, 0x1d66eb28, 0x298143b1, 0x3a23dbc6,
    0xdd5ad13b, 0xcef8494c, 0xfa1fe1d5, 0xe9bd79a2, 0x93d0b0e7, 0x80722890, 0xb4958009, 0xa737187e,
    0xff17c604, 0xecb55e73, 0xd852f6ea, 0xcbf06e9d, 0xb19da7d8, 0xa23f3faf, 0x96d89736, 0x857a0f41,
    0x620305bc, 0x71a19dcb, 0x45463552, 0x56e4ad25, 0x2c896460, 0x3f2bfc17, 0x0bcc548e, 0x186eccf9,
    0xc0d23785, 0xd370aff2, 0xe797076b, 0xf4359f1c, 0x8e585659, 0x9dface2e, 0xa91d66b7, 0xbabffec0,
    0x5dc6f43d, 0x4e646c4a, 0x7a83c4d3, 0x69215ca4, 0x134c95e1, 0x00ee0d96, 0x3409a50f, 0x27ab3d78,
    0x809c2506, 0x933ebd71, 0xa7d915e8, 0xb47b8d9f, 0xce1644da, 0xddb4dcad, 0xe9537434, 0xfaf1ec43,
    0x1d88e6be, 0x0e2a7ec9, 0x3acdd650, 0x296f4e27, 0x53028762, 0x40a01f15, 0x7447b78c, 0x67e52ffb,
    0xbf59d487, 0xacfb4cf0, 0x981ce469, 0x8bbe7c1e, 0xf1d3b55b, 0xe2712d2c, 0xd69685b5, 0xc5341dc2,
    0x224d173f, 0x31ef8f48, 0x050827d1, 0x16aabfa6, 0x6cc776e3, 0x7f65ee94, 0x4b82460d, 0x5820de7a,
    0xfbc3faf9, 0xe861628e, 0xdc86ca17, 0xcf245260, 0xb5499b25, 0xa6eb0352, 0x920cabcb, 0x81ae33bc,
    0x66d73941, 0x7575a136, 0x419209af, 0x523091d8, 0x285d589d, 0x3bffc0ea, 0x0f186873, 0x1cbaf004,
    0xc4060b78, 0xd7a4930f, 0xe3433b96, 0xf0e1a3e1, 0x8a8c6aa4, 0x992ef2d3, 0xadc95a4a, 0xbe6bc23d,
    0x5912c8c0, 0x4ab050b7, 0x7e57f82e, 0x6df56059, 0x1798a91c, 0x043a316b, 0x30dd99f2, 0x237f0185,
    0x844819fb, 0x97ea818c, 0xa30d2915, 0xb0afb162, 0xcac27827, 0xd960e050, 0xed8748c9, 0xfe25d0be,
    0x195cda43, 0x0afe4234, 0x3e19eaad, 0x2dbb72da, 0x57d6bb9f, 0x447423e8, 0x70938b71, 0x63311306,
    0xbb8de87a, 0xa82f700d, 0x9cc8d894, 0x8f6a40e3, 0xf50789a6, 0xe6a511d1, 0xd242b948, 0xc1e0213f,
    0x26992bc2, 0x353bb3b5, 0x01dc1b2c, 0x127e835b, 0x68134a1e, 0x7bb1d269, 0x4f567af0, 0x5cf4e287,
    0x04d43cfd, 0x1776a48a, 0x23910c13, 0x30339464, 0x4a5e5d21, 0x59fcc556, 0x6d1b6dcf, 0x7eb9f5b8,
    0x99c0ff45, 0x8a626732, 0xbe85cfab, 0xad2757dc, 0xd74a9e99, 0xc4e806ee, 0xf00fae77, 0xe3ad3600,
    0x3b11cd7c, 0x28b3550b, 0x1c54fd92, 0x0ff665e5, 0x759baca0, 0x663934d7, 0x52de9c4e, 0x417c0439,
    0xa6050ec4, 0xb5a796b3, 0x81403e2a, 0x92e2a65d, 0xe88f6f18, 0xfb2df76f, 0xcfca5ff6, 0xdc68c781,
    0x7b5fdfff, 0x68fd4788, 0x5c1aef11, 0x4fb87766, 0x35d5be23, 0x26772654, 0x12908ecd, 0x013216ba,
    0xe64b1c47, 0xf5e98430, 0xc10e2ca9, 0xd2acb4de, 0xa8c17d9b, 0xbb63e5ec, 0x8f844d75, 0x9c26d502,
    0x449a2e7e, 0x5738b609, 0x63df1e90, 0x707d86e7, 0x0a104fa2, 0x19b2d7d5, 0x2d557f4c, 0x3ef7e73b,
    0xd98eedc6, 0xca2c75b1, 0xfecbdd28, 0xed69455f, 0x97048c1a, 0x84a6146d, 0xb041bcf4, 0xa3e32483
  },
  {
    0x00000000, 0xa541927e, 0x4f6f520d, 0xea2ec073, 0x9edea41a, 0x3b9f3664, 0xd1b1f617, 0x74f06469,
    0x38513ec5, 0x9d10acbb, 0x773e6cc8, 0xd27ffeb6, 0xa68f9adf, 0x03ce08a1, 0xe9e0c8d2, 0x4ca15aac,
    0x70a27d8a, 0xd5e3eff4, 0x3fcd2f87, 0x9a8cbdf9, 0xee7cd990, 0x4b3d4bee, 0xa1138b9d, 0x045219e3,
    0x48f3434f, 0xedb2d131, 0x079c1142, 0xa2dd833c, 0xd62de755, 0x736c752b, 0x9942b558, 0x3c032726,
    0xe144fb14, 0x4405696a, 0xae2ba919, 0x0b6a3b67, 0x7f9a5f0e, 0xdadbcd70, 0x30f50d03, 0x95b49f7d,
    0xd915c5d1, 0x7c5457af, 0x967a97dc, 0x333b05a2, 0x47cb61cb, 0xe28af3b5, 0x08a433c6, 0xade5a1b8,
    0x91e6869e, 0x34a714e0, 0xde89d493, 0x7bc846ed, 0x0f382284, 0xaa79b0fa, 0x40577089, 0xe516e2f7,
    0xa9b7b85b, 0x0cf62a25, 0xe6d8ea56, 0x43997828, 0x37691c41, 0x92288e3f, 0x78064e4c, 0xdd47dc32,
    0xc76580d9, 0x622412a7, 0x880ad2d4, 0x2d4b40aa, 0x59bb24c3, 0xfcfab6bd, 0x16d476ce, 0xb395e4b0,
    0xff34be1c, 0x5a752c62, 0xb05bec11, 0x151a7e6f, 0x61ea1a06, 0xc4ab8878, 0x2e85480b, 0x8bc4da75,
    0xb7c7fd53, 0x12866f2d, 0xf8a8af5e, 0x5de93d20, 0x29195949, 0x8c58cb37, 0x66760b44, 0xc337993a,
    0x8f96c396, 0x2ad751e8, 0xc0f9919b, 0x65b803e5, 0x1148678c, 0xb409f5f2, 0x5e273581, 0xfb66a7ff,
    0x26217bcd, 0x8360e9b3, 0x694e29c0, 0xcc0fbbbe, 0xb8ffdfd7, 0x1dbe4da9, 0xf7908dda, 0x52d11fa4,
    0x1e704508, 0xbb31d776, 0x511f1705, 0xf45e857b, 0x80aee112, 0x25ef736c, 0xcfc1b31f, 0x6a802161,
    0x56830647, 0xf3c29439, 0x19ec544a, 0xbcadc634, 0xc85da25d, 0x6d1c3023, 0x8732f050, 0x2273622e,
    0x6ed23882, 0xcb93aafc, 0x21bd6a8f, 0x84fcf8f1, 0xf00c9c98, 0x554d0ee6, 0xbf63ce95, 0x1a225ceb,
    0x8b277743, 0x2e66e53d, 0xc448254e, 0x6109b730, 0x15f9d359, 0xb0b84127, 0x5a968154, 0xffd7132a,
    0xb3764986, 0x1637dbf8, 0xfc191b8b, 0x595889f5, 0x2da8ed9c, 0x88e97fe2, 0x62c7bf91, 0xc7862def,
    0xfb850ac9, 0x5ec498b7, 0xb4ea58c4, 0x11abcaba, 0x655baed3, 0xc01a3cad, 0x2a34fcde, 0x8f756ea0,
    0xc3d4340c, 0x6695a672, 0x8cbb6601, 0x29faf47f, 0x5d0a9016, 0xf84b0268, 0x1265c21b, 0xb7245065,
    0x6a638c57, 0xcf221e29, 0x250cde5a, 0x804d4c24, 0xf4bd284d, 0x51fcba33, 0xbbd27a40, 0x1e93e83e,
    0x5232b292, 0xf77320ec, 0x1d5de09f, 0xb81c72e1, 0xccec1688, 0x69ad84f6, 0x83834485, 0x26c2d6fb,
    0x1ac1f1dd, 0xbf8063a3, 0x55aea3d0, 0xf0ef31ae, 0x841f55c7, 0x215ec7b9, 0xcb7007ca, 0x6e3195b4,
    0x2290cf18, 0x87d15d66, 0x6dff9d15, 0xc8be0f6b, 0xbc4e6b02, 0x190ff97c, 0xf321390f, 0x5660ab71,
    0x4c42f79a, 0xe90365e4, 0x032da597, 0xa66c37e9, 0xd29c5380, 0x77ddc1fe, 0x9df3018d, 0x38b293f3,
    0x7413c95f, 0xd1525b21, 0x3b7c9b52, 0x9e3d092c, 0xeacd6d45, 0x4f8cff3b, 0xa5a23f48, 0x00e3ad36,
    0x3ce08a10, 0x99a1186e, 0x738fd81d, 0xd6ce4a63, 0xa23e2e0a, 0x077fbc74, 0xed517c07, 0x4810ee79,
    0x04b1b4d5, 0xa1f026ab, 0x4bdee6d8, 0xee9f74a6, 0x9a6f10cf, 0x3f2e82b1, 0xd50042c2, 0x7041d0bc,
    0xad060c8e, 0x08479ef0, 0xe2695e83, 0x4728ccfd, 0x33d8a894, 0x96993aea, 0x7cb7fa99, 0xd9f668e7,
    0x9557324b, 0x3016a035, 0xda386046, 0x7f79f238, 0x0b899651, 0xaec8042f, 0x44e6c45c, 0xe1a75622,
    0xdda47104, 0x78e5e37a, 0x92cb2309, 0x378ab177, 0x437ad51e, 0xe63b4760, 0x0c158713, 0xa954156d,
    0xe5f54fc1, 0x40b4ddbf, 0xaa9a1dcc, 0x0fdb8fb2, 0x7b2bebdb, 0xde6a79a5, 0x3444b9d6, 0x91052ba8
  },
  {
    0x00000000, 0xdd45aab8, 0xbf672381, 0x62228939, 0x7b2231f3, 0xa6679b4b, 0xc4451272, 0x1900b8ca,
    0xf64463e6, 0x2b01c95e, 0x49234067, 0x9466eadf, 0x8d665215, 0x5023f8ad, 0x32017194, 0xef44db2c,
    0xe964b13d, 0x34211b85, 0x560392bc, 0x8b463804, 0x924680ce, 0x4f032a76, 0x2d21a34f, 0xf06409f7,
    0x1f20d2db, 0xc2657863, 0xa047f15a, 0x7d025be2, 0x6402e328, 0xb9474990, 0xdb65c0a9, 0x06206a11,
    0xd725148b, 0x0a60be33, 0x6842370a, 0xb5079db2, 0xac072578, 0x71428fc0, 0x136006f9, 0xce25ac41,
    0x2161776d, 0xfc24ddd5, 0x9e0654ec, 0x4343fe54, 0x5a43469e, 0x8706ec26, 0xe524651f, 0x3861cfa7,
    0x3e41a5b6, 0xe3040f0e, 0x81268637, 0x5c632c8f, 0x45639445, 0x98263efd, 0xfa04b7c4, 0x27411d7c,
    0xc805c650, 0x15406ce8, 0x7762e5d1, 0xaa274f69, 0xb327f7a3, 0x6e625d1b, 0x0c40d422, 0xd1057e9a,
    0xaba65fe7, 0x76e3f55f, 0x14c17c66, 0xc984d6de, 0xd0846e14, 0x0dc1c4ac, 0x6fe34d95, 0xb2a6e72d,
    0x5de23c01, 0x80a796b9, 0xe2851f80, 0x3fc0b538, 0x26c00df2, 0xfb85a74a, 0x99a72e73, 0x44e284cb,
    0x42c2eeda, 0x9f874462, 0xfda5cd5b, 0x20e067e3, 0x39e0df29, 0xe4a57591, 0x8687fca8, 0x5bc25610,
    0xb4868d3c, 0x69c32784, 0x0be1aebd, 0xd6a40405, 0xcfa4bccf, 0x12e11677, 0x70c39f4e, 0xad8635f6,
    0x7c834b6c, 0xa1c6e1d4, 0xc3e468ed, 0x1ea1c255, 0x07a17a9f, 0xdae4d027, 0xb8c6591e, 0x6583f3a6,
    0x8ac7288a, 0x57828232, 0x35a00b0b, 0xe8e5a1b3, 0xf1e51979, 0x2ca0b3c1, 0x4e823af8, 0x93c79040,
    0x95e7fa51, 0x48a250e9, 0x2a80d9d0, 0xf7c57368, 0xeec5cba2, 0x3380611a, 0x51a2e823, 0x8ce7429b,
    0x63a399b7, 0xbee6330f, 0xdcc4ba36, 0x0181108e, 0x1881a844, 0xc5c402fc, 0xa7e68bc5, 0x7aa3217d,
    0x52a0c93f, 0x8fe56387, 0xedc7eabe, 0x30824006, 0x2982f8cc, 0xf4c75274, 0x96e5db4d, 0x4ba071f5,
    0xa4e4aad9, 0x79a10061, 0x1b838958, 0xc6c623e0, 0xdfc69b2a, 0x02833192, 0x60a1b8ab, 0xbde41213,
    0xbbc47802, 0x6681d2ba, 0x04a35b83, 0xd9e6f13b, 0xc0e649f1, 0x1da3e349, 0x7f816a70, 0xa2c4c0c8,
    0x4d801be4, 0x90c5b15c, 0xf2e73865, 0x2fa292dd, 0x36a22a17, 0xebe780af, 0x89c50996, 0x5480a32e,
    0x8585ddb4, 0x58c0770c, 0x3ae2fe35, 0xe7a7548d, 0xfea7ec47, 0x23e246ff, 0x41c0cfc6, 0x9c85657e,
    0x73c1be52, 0xae8414ea, 0xcca69dd3, 0x11e3376b, 0x08e38fa1, 0xd5a62519, 0xb784ac20, 0x6ac10698,
    0x6ce16c89, 0xb1a4c631, 0xd3864f08, 0x0ec3e5b0, 0x17c35d7a, 0xca86f7c2, 0xa8a47efb, 0x75e1d443,
    0x9aa50f6f, 0x47e0a5d7, 0x25c22cee, 0xf8878656, 0xe1873e9c, 0x3cc29424, 0x5ee01d1d, 0x83a5b7a5,
    0xf90696d8, 0x24433c60, 0x4661b559, 0x9b241fe1, 0x8224a72b, 0x5f610d93, 0x3d4384aa, 0xe0062e12,
    0x0f42f53e, 0xd2075f86, 0xb025d6bf, 0x6d607c07, 0x7460c4cd, 0xa9256e75, 0xcb07e74c, 0x16424df4,
    0x106227e5, 0xcd278d5d, 0xaf050464, 0x7240aedc, 0x6b401616, 0xb605bcae, 0xd4273597, 0x09629f2f,
    0xe6264403, 0x3b63eebb, 0x59416782, 0x8404cd3a, 0x9d0475f0, 0x4041df48, 0x22635671, 0xff26fcc9,
    0x2e238253, 0xf36628eb, 0x9144a1d2, 0x4c010b6a, 0x5501b3a0, 0x88441918, 0xea669021, 0x37233a99,
    0xd867e1b5, 0x05224b0d, 0x6700c234, 0xba45688c, 0xa345d046, 0x7e007afe, 0x1c22f3c7, 0xc167597f,
    0xc747336e, 0x1a0299d6, 0x782010ef, 0xa565ba57, 0xbc65029d, 0x6120a825, 0x0302211c, 0xde478ba4,
    0x31035088, 0xec46fa30, 0x8e647309, 0x5321d9b1, 0x4a21617b, 0x9764cbc3, 0xf54642fa, 0x2803e842
  },
  {
    0x00000000, 0x38116fac, 0x7022df58, 0x4833b0f4, 0xe045beb0, 0xd854d11c, 0x906761e8, 0xa8760e44,
    0xc5670b91, 0xfd76643d, 0xb545d4c9, 0x8d54bb65, 0x2522b521, 0x1d33da8d, 0x55006a79, 0x6d1105d5,
    0x8f2261d3, 0xb7330e7f, 0xff00be8b, 0xc711d127, 0x6f67df63, 0x5776b0cf, 0x1f45003b, 0x27546f97,
    0x4a456a42, 0x725405ee, 0x3a67b51a, 0x0276dab6, 0xaa00d4f2, 0x9211bb5e, 0xda220baa, 0xe2336406,
    0x1ba8b557, 0x23b9dafb, 0x6b8a6a0f, 0x539b05a3, 0xfbed0be7, 0xc3fc644b, 0x8bcfd4bf, 0xb3debb13,
    0xdecfbec6, 0xe6ded16a, 0xaeed619e, 0x96fc0e32, 0x3e8a0076, 0x069b6fda, 0x4ea8df2e, 0x76b9b082,
    0x948ad484, 0xac9bbb28, 0xe4a80bdc, 0xdcb96470, 0x74cf6a34, 0x4cde0598, 0x04edb56c, 0x3cfcdac0,
    0x51eddf15, 0x69fcb0b9, 0x21cf004d, 0x19de6fe1, 0xb1a861a5, 0x89b90e09, 0xc18abefd, 0xf99bd151,
    0x37516aae, 0x0f400502, 0x4773b5f6, 0x7f62da5a, 0xd714d41e, 0xef05bbb2, 0xa7360b46, 0x9f2764ea,
    0xf236613f, 0xca270e93, 0x8214be67, 0xba05d1cb, 0x1273df8f, 0x2a62b023, 0x625100d7, 0x5a406f7b,
    0xb8730b7d, 0x806264d1, 0xc851d425, 0xf040bb89, 0x5836b5cd, 0x6027da61, 0x28146a95, 0x10050539,
    0x7d1400ec, 0x45056f40, 0x0d36dfb4, 0x3527b018, 0x9d51be5c, 0xa540d1f0, 0xed736104, 0xd5620ea8,
    0x2cf9dff9, 0x14e8b055, 0x5cdb00a1, 0x64ca6f0d, 0xccbc6149, 0xf4ad0ee5, 0xbc9ebe11, 0x848fd1bd,
    0xe99ed468, 0xd18fbbc4, 0x99bc0b30, 0xa1ad649c, 0x09db6ad8, 0x31ca0574, 0x79f9b580, 0x41e8da2c,
    0xa3dbbe2a, 0x9bcad186, 0xd3f96172, 0xebe80ede, 0x439e009a, 0x7b8f6f36, 0x33bcdfc2, 0x0badb06e,
    0x66bcb5bb, 0x5eadda17, 0x169e6ae3, 0x2e8f054f, 0x86f90b0b, 0xbee864a7, 0xf6dbd453, 0xcecabbff,
    0x6ea2d55c, 0x56b3baf0, 0x1e800a04, 0x269165a8, 0x8ee76bec, 0xb6f60440, 0xfec5b4b4, 0xc6d4db18,
    0xabc5decd, 0x93d4b161, 0xdbe70195, 0xe3f66e39, 0x4b80607d, 0x73910fd1, 0x3ba2bf25, 0x03b3d089,
    0xe180b48f, 0xd991db23, 0x91a26bd7, 0xa9b3047b, 0x01c50a3f, 0x39d46593, 0x71e7d567, 0x49f6bacb,
    0x24e7bf1e, 0x1cf6d0b2, 0x54c56046, 0x6cd40fea, 0xc4a201ae, 0xfcb36e02, 0xb480def6, 0x8c91b15a,
    0x750a600b, 0x4d1b0fa7, 0x0528bf53, 0x3d39d0ff, 0x954fdebb, 0xad5eb117, 0xe56d01e3, 0xdd7c6e4f,
    0xb06d6b9a, 0x887c0436, 0xc04fb4c2, 0xf85edb6e, 0x5028d52a, 0x6839ba86, 0x200a0a72, 0x181b65de,
    0xfa2801d8, 0xc2396e74, 0x8a0ade80, 0xb21bb12c, 0x1a6dbf68, 0x227cd0c4, 0x6a4f6030, 0x525e0f9c,
    0x3f4f0a49, 0x075e65e5, 0x4f6dd511, 0x777cbabd, 0xdf0ab4f9, 0xe71bdb55, 0xaf286ba1, 0x9739040d,
    0x59f3bff2, 0x61e2d05e, 0x29d160aa, 0x11c00f06, 0xb9b60142, 0x81a76eee, 0xc994de1a, 0xf185b1b6,
    0x9c94b463, 0xa485dbcf, 0xecb66b3b, 0xd4a70497, 0x7cd10ad3, 0x44c0657f, 0x0cf3d58b, 0x34e2ba27,
    0xd6d1de21, 0xeec0b18d, 0xa6f30179, 0x9ee26ed5, 0x36946091, 0x0e850f3d, 0x46b6bfc9, 0x7ea7d065,
    0x13b6d5b0, 0x2ba7ba1c, 0x63940ae8, 0x5b856544, 0xf3f36b00, 0xcbe204ac, 0x83d1b458, 0xbbc0dbf4,
    0x425b0aa5, 0x7a4a6509, 0x3279d5fd, 0x0a68ba51, 0xa21eb415, 0x9a0fdbb9, 0xd23c6b4d, 0xea2d04e1,
    0x873c0134, 0xbf2d6e98, 0xf71ede6c, 0xcf0fb1c0, 0x6779bf84, 0x5f68d028, 0x175b60dc, 0x2f4a0f70,
    0xcd796b76, 0xf56804da, 0xbd5bb42e, 0x854adb82, 0x2d3cd5c6, 0x152dba6a, 0x5d1e0a9e, 0x650f6532,
    0x081e60e7, 0x300f0f4b, 0x783cbfbf, 0x402dd013, 0xe85bde57, 0xd04ab1fb, 0x9879010f, 0xa0686ea3
  },
  {
    0x00000000, 0xef306b19, 0xdb8ca0c3, 0x34bccbda, 0xb2f53777, 0x5dc55c6e, 0x697997b4, 0x8649fcad,
    0x6006181f, 0x8f367306, 0xbb8ab8dc, 0x54bad3c5, 0xd2f32f68, 0x3dc34471, 0x097f8fab, 0xe64fe4b2,
    0xc00c303e, 0x2f3c5b27, 0x1b8090fd, 0xf4b0fbe4, 0x72f90749, 0x9dc96c50, 0xa975a78a, 0x4645cc93,
    0xa00a2821, 0x4f3a4338, 0x7b8688e2, 0x94b6e3fb, 0x12ff1f56, 0xfdcf744f, 0xc973bf95, 0x2643d48c,
    0x85f4168d, 0x6ac47d94, 0x5e78b64e, 0xb148dd57, 0x370121fa, 0xd8314ae3, 0xec8d8139, 0x03bdea20,
    0xe5f20e92, 0x0ac2658b, 0x3e7eae51, 0xd14ec548, 0x570739e5, 0xb83752fc, 0x8c8b9926, 0x63bbf23f,
    0x45f826b3, 0xaac84daa, 0x9e748670, 0x7144ed69, 0xf70d11c4, 0x183d7add, 0x2c81b107, 0xc3b1da1e,
    0x25fe3eac, 0xcace55b5, 0xfe729e6f, 0x1142f576, 0x970b09db, 0x783b62c2, 0x4c87a918, 0xa3b7c201,
    0x0e045beb, 0xe13430f2, 0xd588fb28, 0x3ab89031, 0xbcf16c9c, 0x53c10785, 0x677dcc5f, 0x884da746,
    0x6e0243f4, 0x813228ed, 0xb58ee337, 0x5abe882e, 0xdcf77483, 0x33c71f9a, 0x077bd440, 0xe84bbf59,
    0xce086bd5, 0x213800cc, 0x1584cb16, 0xfab4a00f, 0x7cfd5ca2, 0x93cd37bb, 0xa771fc61, 0x48419778,
    0xae0e73ca, 0x413e18d3, 0x7582d309, 0x9ab2b810, 0x1cfb44bd, 0xf3cb2fa4, 0xc777e47e, 0x28478f67,
    0x8bf04d66, 0x64c0267f, 0x507ceda5, 0xbf4c86bc, 0x39057a11, 0xd6351108, 0xe289dad2, 0x0db9b1cb,
    0xebf65579, 0x04c63e60, 0x307af5ba, 0xdf4a9ea3, 0x5903620e, 0xb6330917, 0x828fc2cd, 0x6dbfa9d4,
    0x4bfc7d58, 0xa4cc1641, 0x9070dd9b, 0x7f40b682, 0xf9094a2f, 0x16392136, 0x2285eaec, 0xcdb581f5,
    0x2bfa6547, 0xc4ca0e5e, 0xf076c584, 0x1f46ae9d, 0x990f5230, 0x763f3929, 0x4283f2f3, 0xadb399ea,
    0x1c08b7d6, 0xf338dccf, 0xc7841715, 0x28b47c0c, 0xaefd80a1, 0x41cdebb8, 0x75712062, 0x9a414b7b,
    0x7c0eafc9, 0x933ec4d0, 0xa7820f0a, 0x48b26413, 0xcefb98be, 0x21cbf3a7, 0x1577387d, 0xfa475364,
    0xdc0487e8, 0x3334ecf1, 0x0788272b, 0xe8b84c32, 0x6ef1b09f, 0x81c1db86, 0xb57d105c, 0x5a4d7b45,
    0xbc029ff7, 0x5332f4ee, 0x678e3f34, 0x88be542d, 0x0ef7a880, 0xe1c7c399, 0xd57b0843, 0x3a4b635a,
    0x99fca15b, 0x76ccca42, 0x42700198, 0xad406a81, 0x2b09962c, 0xc439fd35, 0xf08536ef, 0x1fb55df6,
    0xf9fab944, 0x16cad25d, 0x22761987, 0xcd46729e, 0x4b0f8e33, 0xa43fe52a, 0x90832ef0, 0x7fb345e9,
    0x59f09165, 0xb6c0fa7c, 0x827c31a6, 0x6d4c5abf, 0xeb05a612, 0x0435cd0b, 0x308906d1, 0xdfb96dc8,
    0x39f6897a, 0xd6c6e263, 0xe27a29b9, 0x0d4a42a0, 0x8b03be0d, 0x6433d514, 0x508f1ece, 0xbfbf75d7,
    0x120cec3d, 0xfd3c8724, 0xc9804cfe, 0x26b027e7, 0xa0f9db4a, 0x4fc9b053, 0x7b757b89, 0x94451090,
    0x720af422, 0x9d3a9f3b, 0xa98654e1, 0x46b63ff8, 0xc0ffc355, 0x2fcfa84c, 0x1b736396, 0xf443088f,
    0xd200dc03, 0x3d30b71a, 0x098c7cc0, 0xe6bc17d9, 0x60f5eb74, 0x8fc5806d, 0xbb794bb7, 0x544920ae,
    0xb206c41c, 0x5d36af05, 0x698a64df, 0x86ba0fc6, 0x00f3f36b, 0xefc39872, 0xdb7f53a8, 0x344f38b1,
    0x97f8fab0, 0x78c891a9, 0x4c745a73, 0xa344316a, 0x250dcdc7, 0xca3da6de, 0xfe816d04, 0x11b1061d,
    0xf7fee2af, 0x18ce89b6, 0x2c72426c, 0xc3422975, 0x450bd5d8, 0xaa3bbec1, 0x9e87751b, 0x71b71e02,
    0x57f4ca8e, 0xb8c4a197, 0x8c786a4d, 0x63480154, 0xe501fdf9, 0x0a3196e0, 0x3e8d5d3a, 0xd1bd3623,
    0x37f2d291, 0xd8c2b988, 0xec7e7252, 0x034e194b, 0x8507e5e6, 0x6a378eff, 0x5e8b4525, 0xb1bb2e3c
  },
  {
    0x00000000, 0x68032cc8, 0xd0065990, 0xb8057558, 0xa5e0c5d1, 0xcde3e919, 0x75e69c41, 0x1de5b089,
    0x4e2dfd53, 0x262ed19b, 0x9e2ba4c3, 0xf628880b, 0xebcd3882, 0x83ce144a, 0x3bcb6112, 0x53c84dda,
    0x9c5bfaa6, 0xf458d66e, 0x4c5da336, 0x245e8ffe, 0x39bb3f77, 0x51b813bf, 0xe9bd66e7, 0x81be4a2f,
    0xd27607f5, 0xba752b3d, 0x02705e65, 0x6a7372ad, 0x7796c224, 0x1f95eeec, 0xa7909bb4, 0xcf93b77c,
    0x3d5b83bd, 0x5558af75, 0xed5dda2d, 0x855ef6e5, 0x98bb466c, 0xf0b86aa4, 0x48bd1ffc, 0x20be3334,
    0x73767eee, 0x1b755226, 0xa370277e, 0xcb730bb6, 0xd696bb3f, 0xbe9597f7, 0x0690e2af, 0x6e93ce67,
    0xa100791b, 0xc90355d3, 0x7106208b, 0x19050c43, 0x04e0bcca, 0x6ce39002, 0xd4e6e55a, 0xbce5c992,
    0xef2d8448, 0x872ea880, 0x3f2bddd8, 0x5728f110, 0x4acd4199, 0x22ce6d51, 0x9acb1809, 0xf2c834c1,
    0x7ab7077a, 0x12b42bb2, 0xaab15eea, 0xc2b27222, 0xdf57c2ab, 0xb754ee63, 0x0f519b3b, 0x6752b7f3,
    0x349afa29, 0x5c99d6e1, 0xe49ca3b9, 0x8c9f8f71, 0x917a3ff8, 0xf9791330, 0x417c6668, 0x297f4aa0,
    0xe6ecfddc, 0x8eefd114, 0x36eaa44c, 0x5ee98884, 0x430c380d, 0x2b0f14c5, 0x930a619d, 0xfb094d55,
    0xa8c1008f, 0xc0c22c47, 0x78c7591f, 0x10c475d7, 0x0d21c55e, 0x6522e996, 0xdd279cce, 0xb524b006,
    0x47ec84c7, 0x2fefa80f, 0x97eadd57, 0xffe9f19f, 0xe20c4116, 0x8a0f6dde, 0x320a1886, 0x5a09344e,
    0x09c17994, 0x61c2555c, 0xd9c72004, 0xb1c40ccc, 0xac21bc45, 0xc422908d, 0x7c27e5d5, 0x1424c91d,
    0xdbb77e61, 0xb3b452a9, 0x0bb127f1, 0x63b20b39, 0x7e57bbb0, 0x16549778, 0xae51e220, 0xc652cee8,
    0x959a8332, 0xfd99affa, 0x459cdaa2, 0x2d9ff66a, 0x307a46e3, 0x58796a2b, 0xe07c1f73, 0x887f33bb,
    0xf56e0ef4, 0x9d6d223c, 0x25685764, 0x4d6b7bac, 0x508ecb25, 0x388de7ed, 0x808892b5, 0xe88bbe7d,
    0xbb43f3a7, 0xd340df6f, 0x6b45aa37, 0x034686ff, 0x1ea33676, 0x76a01abe, 0xcea56fe6, 0xa6a6432e,
    0x6935f452, 0x0136d89a, 0xb933adc2, 0xd130810a, 0xccd53183, 0xa4d61d4b, 0x1cd36813, 0x74d044db,
    0x27180901, 0x4f1b25c9, 0xf71e5091, 0x9f1d7c59, 0x82f8ccd0, 0xeafbe018, 0x52fe9540, 0x3afdb988,
    0xc8358d49, 0xa036a181, 0x1833d4d9, 0x7030f811, 0x6dd54898, 0x05d66450, 0xbdd31108, 0xd5d03dc0,
    0x8618701a, 0xee1b5cd2, 0x561e298a, 0x3e1d0542, 0x23f8b5cb, 0x4bfb9903, 0xf3feec5b, 0x9bfdc093,
    0x546e77ef, 0x3c6d5b27, 0x84682e7f, 0xec6b02b7, 0xf18eb23e, 0x998d9ef6, 0x2188ebae, 0x498bc766,
    0x1a438abc, 0x7240a674, 0xca45d32c, 0xa246ffe4, 0xbfa34f6d, 0xd7a063a5, 0x6fa516fd, 0x07a63a35,
    0x8fd9098e, 0xe7da2546, 0x5fdf501e, 0x37dc7cd6, 0x2a39cc5f, 0x423ae097, 0xfa3f95cf, 0x923cb907,
    0xc1f4f4dd, 0xa9f7d815, 0x11f2ad4d, 0x79f18185, 0x6414310c, 0x0c171dc4, 0xb412689c, 0xdc114454,
    0x1382f328, 0x7b81dfe0, 0xc384aab8, 0xab878670, 0xb66236f9, 0xde611a31, 0x66646f69, 0x0e6743a1,
    0x5daf0e7b, 0x35ac22b3, 0x8da957eb, 0xe5aa7b23, 0xf84fcbaa, 0x904ce762, 0x2849923a, 0x404abef2,
    0xb2828a33, 0xda81a6fb, 0x6284d3a3, 0x0a87ff6b, 0x17624fe2, 0x7f61632a, 0xc7641672, 0xaf673aba,
    0xfcaf7760, 0x94ac5ba8, 0x2ca92ef0, 0x44aa0238, 0x594fb2b1, 0x314c9e79, 0x8949eb21, 0xe14ac7e9,
    0x2ed97095, 0x46da5c5d, 0xfedf2905, 0x96dc05cd, 0x8b39b544, 0xe33a998c, 0x5b3fecd4, 0x333cc01c,
    0x60f48dc6, 0x08f7a10e, 0xb0f2d456, 0xd8f1f89e, 0xc5144817, 0xad1764df, 0x15121187, 0x7d113d4f
  },
  {
    0x00000000, 0x493c7d27, 0x9278fa4e, 0xdb448769, 0x211d826d, 0x6821ff4a, 0xb3657823, 0xfa590504,
    0x423b04da, 0x0b0779fd, 0xd043fe94, 0x997f83b3, 0x632686b7, 0x2a1afb90, 0xf15e7cf9, 0xb86201de,
    0x847609b4, 0xcd4a7493, 0x160ef3fa, 0x5f328edd, 0xa56b8bd9, 0xec57f6fe, 0x37137197, 0x7e2f0cb0,
    0xc64d0d6e, 0x8f717049, 0x5435f720, 0x1d098a07, 0xe7508f03, 0xae6cf224, 0x7528754d, 0x3c14086a,
    0x0d006599, 0x443c18be, 0x9f789fd7, 0xd644e2f0, 0x2c1de7f4, 0x65219ad3, 0xbe651dba, 0xf759609d,
    0x4f3b6143, 0x06071c64, 0xdd439b0d, 0x947fe62a, 0x6e26e32e, 0x271a9e09, 0xfc5e1960, 0xb5626447,
    0x89766c2d, 0xc04a110a, 0x1b0e9663, 0x5232eb44, 0xa86bee40, 0xe1579367, 0x3a13140e, 0x732f6929,
    0xcb4d68f7, 0x827115d0, 0x593592b9, 0x1009ef9e, 0xea50ea9a, 0xa36c97bd, 0x782810d4, 0x31146df3,
    0x1a00cb32, 0x533cb615, 0x8878317c, 0xc1444c5b, 0x3b1d495f, 0x72213478, 0xa965b311, 0xe059ce36,
    0x583bcfe8, 0x1107b2cf, 0xca4335a6, 0x837f4881, 0x79264d85, 0x301a30a2, 0xeb5eb7cb, 0xa262caec,
    0x9e76c286, 0xd74abfa1, 0x0c0e38c8, 0x453245ef, 0xbf6b40eb, 0xf6573dcc, 0x2d13baa5, 0x642fc782,
    0xdc4dc65c, 0x9571bb7b, 0x4e353c12, 0x07094135, 0xfd504431, 0xb46c3916, 0x6f28be7f, 0x2614c358,
    0x1700aeab, 0x5e3cd38c, 0x857854e5, 0xcc4429c2, 0x361d2cc6, 0x7f2151e1, 0xa465d688, 0xed59abaf,
    0x553baa71, 0x1c07d756, 0xc743503f, 0x8e7f2d18, 0x7426281c, 0x3d1a553b, 0xe65ed252, 0xaf62af75,
    0x9376a71f, 0xda4ada38, 0x010e5d51, 0x48322076, 0xb26b2572, 0xfb575855, 0x2013df3c, 0x692fa21b,
    0xd14da3c5, 0x9871dee2, 0x4335598b, 0x0a0924ac, 0xf05021a8, 0xb96c5c8f, 0x6228dbe6, 0x2b14a6c1,
    0x34019664, 0x7d3deb43, 0xa6796c2a, 0xef45110d, 0x151c1409, 0x5c20692e, 0x8764ee47, 0xce589360,
    0x763a92be, 0x3f06ef99, 0xe44268f0, 0xad7e15d7, 0x572710d3, 0x1e1b6df4, 0xc55fea9d, 0x8c6397ba,
    0xb0779fd0, 0xf94be2f7, 0x220f659e, 0x6b3318b9, 0x916a1dbd, 0xd856609a, 0x0312e7f3, 0x4a2e9ad4,
    0xf24c9b0a, 0xbb70e62d, 0x60346144, 0x29081c63, 0xd3511967, 0x9a6d6440, 0x4129e329, 0x08159e0e,
    0x3901f3fd, 0x703d8eda, 0xab7909b3, 0xe2457494, 0x181c7190, 0x51200cb7, 0x8a648bde, 0xc358f6f9,
    0x7b3af727, 0x32068a00, 0xe9420d69, 0xa07e704e, 0x5a27754a, 0x131b086d, 0xc85f8f04, 0x8163f223,
    0xbd77fa49, 0xf44b876e, 0x2f0f0007, 0x66337d20, 0x9c6a7824, 0xd5560503, 0x0e12826a, 0x472eff4d,
    0xff4cfe93, 0xb67083b4, 0x6d3404dd, 0x240879fa, 0xde517cfe, 0x976d01d9, 0x4c2986b0, 0x0515fb97,
    0x2e015d56, 0x673d2071, 0xbc79a718, 0xf545da3f, 0x0f1cdf3b, 0x4620a21c, 0x9d642575, 0xd4585852,
    0x6c3a598c, 0x250624ab, 0xfe42a3c2, 0xb77edee5, 0x4d27dbe1, 0x041ba6c6, 0xdf5f21af, 0x96635c88,
    0xaa7754e2, 0xe34b29c5, 0x380faeac, 0x7133d38b, 0x8b6ad68f, 0xc256aba8, 0x19122cc1, 0x502e51e6,
    0xe84c5038, 0xa1702d1f, 0x7a34aa76, 0x3308d751, 0xc951d255, 0x806daf72, 0x5b29281b, 0x1215553c,
    0x230138cf, 0x6a3d45e8, 0xb179c281, 0xf845bfa6, 0x021cbaa2, 0x4b20c785, 0x906440ec, 0xd9583dcb,
    0x613a3c15, 0x28064132, 0xf342c65b, 0xba7ebb7c, 0x4027be78, 0x091bc35f, 0xd25f4436, 0x9b633911,
    0xa777317b, 0xee4b4c5c, 0x350fcb35, 0x7c33b612, 0x866ab316, 0xcf56ce31, 0x14124958, 0x5d2e347f,
    0xe54c35a1, 0xac704886, 0x7734cfef, 0x3e08b2c8, 0xc451b7cc, 0x8d6dcaeb, 0x56294d82, 0x1f1530a5
  }
};

// From CityHash
static const uint64_t k0=0xc3a5c85c97cb3127ULL;
static const uint64_t k1=0xb492b66fbe98f273ULL;
static const uint64_t k2=0x9ae16a3b2f90404fULL;

#define CRC32C_64BIT(crc, data) do{\
    crc^=((uint32_t *)(data))[0];\
    crc=crc32c_table[7][crc&0xff]^\
        crc32c_table[6][(crc>>8)&0xff]^\
        crc32c_table[5][(crc>>16)&0xff]^\
        crc32c_table[4][(crc>>24)&0xff]^\
        crc32c_table[3][((uint8_t *)(data))[4]]^\
        crc32c_table[2][((uint8_t *)(data))[5]]^\
        crc32c_table[1][((uint8_t *)(data))[6]]^\
        crc32c_table[0][((uint8_t *)(data))[7]];\
  } while (0);
  
#define CRC32C_64BIT_UINT(crc, uint) do{\
    crc^=(uint)&0xffffffffU;\
    crc=crc32c_table[7][crc&0xff]^\
        crc32c_table[6][(crc>>8)&0xff]^\
        crc32c_table[5][(crc>>16)&0xff]^\
        crc32c_table[4][(crc>>24)&0xff]^\
        crc32c_table[3][((uint)>>32)&0xff]^\
        crc32c_table[2][((uint)>>40)&0xff]^\
        crc32c_table[1][((uint)>>48)&0xff]^\
        crc32c_table[0][((uint)>>56)&0xff];\
  } while (0);
  
#define CRC32C_8BIT(crc, data) do{\
    crc=crc32c_table[0][(((crc)^(*((uint8_t *)data)))&0xff)]^((crc)>>8);\
  } while (0);

#ifdef CRC32_HW
static int crc_hashw=0;

PSYNC_NOINLINE static uint32_t psync_crc32c_sw(uint32_t crc, const void *ptr, size_t len){
#else
uint32_t psync_crc32c(uint32_t crc, const void *ptr, size_t len){
#endif
  const char *data;
  data=(const char *)ptr;
  while (((uintptr_t)data)%sizeof(uint32_t) && len){
    CRC32C_8BIT(crc, data);
    data++;
    len--;
  }
  while (len>=64){
    len-=64;
    CRC32C_64BIT(crc, data);
    data+=8;
    CRC32C_64BIT(crc, data);
    data+=8;
    CRC32C_64BIT(crc, data);
    data+=8;
    CRC32C_64BIT(crc, data);
    data+=8;
    CRC32C_64BIT(crc, data);
    data+=8;
    CRC32C_64BIT(crc, data);
    data+=8;
    CRC32C_64BIT(crc, data);
    data+=8;
    CRC32C_64BIT(crc, data);
    data+=8;
  }
  while (len>=8){
    len-=8;
    CRC32C_64BIT(crc, data);
    data+=8;
  }
  while (len){
    len--;
    CRC32C_8BIT(crc, data);
    data++;
  }
  return crc;
}

#ifdef CRC32_HW

#if defined(CRC32_GNUC)

PSYNC_NOINLINE static int psync_has_hw_crc(){
  uint32_t eax, ecx;
  eax=1;
  __asm__("cpuid" 
          : "=c"(ecx)
          : "a"(eax)
          : "%ebx", "%edx");
  if ((ecx>>20)&1)
    debug(D_NOTICE, "hardware CRC32C support detected");
  else
    debug(D_NOTICE, "hardware CRC32C support not detected");
  return (ecx>>20)&1;
}

#define CRC32C_64BIT_HW(crc, data) asm("crc32q %[value], %[crcval]\n" : [crcval] "+r" (crc) : [value] "g" (data))
#define CRC32C_32BIT_HW(crc, data) asm("crc32l %[value], %[crcval]\n" : [crcval] "+r" (crc) : [value] "g" (data))
#define CRC32C_8BIT_HW(crc, data) asm("crc32b %[value], %[crcval]\n" : [crcval] "+r" (crc) : [value] "g" (data))

#elif defined(CRC32_MSC)

PSYNC_NOINLINE static int psync_has_hw_crc(){
  int info[4];
  __cpuid(info, 1);
  if ((info[2]>>20)&1)
    debug(D_NOTICE, "hardware CRC32C support detected");
  else
    debug(D_NOTICE, "hardware CRC32C support not detected");
  return (info[2]>>20)&1;
}

#define CRC32C_64BIT_HW(crc, data) do {crc=_mm_crc32_u64(crc, data);} while (0)
#define CRC32C_32BIT_HW(crc, data) do {crc=_mm_crc32_u32(crc, data);} while (0)
#define CRC32C_8BIT_HW(crc, data) do {crc=_mm_crc32_u8(crc, data);} while (0)

#endif

/* we can trade this big table to a single uint32_t[32] and do bit by bit replacement, but it is significantly slower */
static uint32_t crc32c_shift_chunk_table1360[4][256]={
  {
    0x00000000, 0x79113270, 0xf22264e0, 0x8b335690, 0xe1a8bf31, 0x98b98d41, 0x138adbd1, 0x6a9be9a1,
    0xc6bd0893, 0xbfac3ae3, 0x349f6c73, 0x4d8e5e03, 0x2715b7a2, 0x5e0485d2, 0xd537d342, 0xac26e132,
    0x889667d7, 0xf18755a7, 0x7ab40337, 0x03a53147, 0x693ed8e6, 0x102fea96, 0x9b1cbc06, 0xe20d8e76,
    0x4e2b6f44, 0x373a5d34, 0xbc090ba4, 0xc51839d4, 0xaf83d075, 0xd692e205, 0x5da1b495, 0x24b086e5,
    0x14c0b95f, 0x6dd18b2f, 0xe6e2ddbf, 0x9ff3efcf, 0xf568066e, 0x8c79341e, 0x074a628e, 0x7e5b50fe,
    0xd27db1cc, 0xab6c83bc, 0x205fd52c, 0x594ee75c, 0x33d50efd, 0x4ac43c8d, 0xc1f76a1d, 0xb8e6586d,
    0x9c56de88, 0xe547ecf8, 0x6e74ba68, 0x17658818, 0x7dfe61b9, 0x04ef53c9, 0x8fdc0559, 0xf6cd3729,
    0x5aebd61b, 0x23fae46b, 0xa8c9b2fb, 0xd1d8808b, 0xbb43692a, 0xc2525b5a, 0x49610dca, 0x30703fba,
    0x298172be, 0x509040ce, 0xdba3165e, 0xa2b2242e, 0xc829cd8f, 0xb138ffff, 0x3a0ba96f, 0x431a9b1f,
    0xef3c7a2d, 0x962d485d, 0x1d1e1ecd, 0x640f2cbd, 0x0e94c51c, 0x7785f76c, 0xfcb6a1fc, 0x85a7938c,
    0xa1171569, 0xd8062719, 0x53357189, 0x2a2443f9, 0x40bfaa58, 0x39ae9828, 0xb29dceb8, 0xcb8cfcc8,
    0x67aa1dfa, 0x1ebb2f8a, 0x9588791a, 0xec994b6a, 0x8602a2cb, 0xff1390bb, 0x7420c62b, 0x0d31f45b,
    0x3d41cbe1, 0x4450f991, 0xcf63af01, 0xb6729d71, 0xdce974d0, 0xa5f846a0, 0x2ecb1030, 0x57da2240,
    0xfbfcc372, 0x82edf102, 0x09dea792, 0x70cf95e2, 0x1a547c43, 0x63454e33, 0xe87618a3, 0x91672ad3,
    0xb5d7ac36, 0xccc69e46, 0x47f5c8d6, 0x3ee4faa6, 0x547f1307, 0x2d6e2177, 0xa65d77e7, 0xdf4c4597,
    0x736aa4a5, 0x0a7b96d5, 0x8148c045, 0xf859f235, 0x92c21b94, 0xebd329e4, 0x60e07f74, 0x19f14d04,
    0x5302e57c, 0x2a13d70c, 0xa120819c, 0xd831b3ec, 0xb2aa5a4d, 0xcbbb683d, 0x40883ead, 0x39990cdd,
    0x95bfedef, 0xecaedf9f, 0x679d890f, 0x1e8cbb7f, 0x741752de, 0x0d0660ae, 0x8635363e, 0xff24044e,
    0xdb9482ab, 0xa285b0db, 0x29b6e64b, 0x50a7d43b, 0x3a3c3d9a, 0x432d0fea, 0xc81e597a, 0xb10f6b0a,
    0x1d298a38, 0x6438b848, 0xef0beed8, 0x961adca8, 0xfc813509, 0x85900779, 0x0ea351e9, 0x77b26399,
    0x47c25c23, 0x3ed36e53, 0xb5e038c3, 0xccf10ab3, 0xa66ae312, 0xdf7bd162, 0x544887f2, 0x2d59b582,
    0x817f54b0, 0xf86e66c0, 0x735d3050, 0x0a4c0220, 0x60d7eb81, 0x19c6d9f1, 0x92f58f61, 0xebe4bd11,
    0xcf543bf4, 0xb6450984, 0x3d765f14, 0x44676d64, 0x2efc84c5, 0x57edb6b5, 0xdcdee025, 0xa5cfd255,
    0x09e93367, 0x70f80117, 0xfbcb5787, 0x82da65f7, 0xe8418c56, 0x9150be26, 0x1a63e8b6, 0x6372dac6,
    0x7a8397c2, 0x0392a5b2, 0x88a1f322, 0xf1b0c152, 0x9b2b28f3, 0xe23a1a83, 0x69094c13, 0x10187e63,
    0xbc3e9f51, 0xc52fad21, 0x4e1cfbb1, 0x370dc9c1, 0x5d962060, 0x24871210, 0xafb44480, 0xd6a576f0,
    0xf215f015, 0x8b04c265, 0x003794f5, 0x7926a685, 0x13bd4f24, 0x6aac7d54, 0xe19f2bc4, 0x988e19b4,
    0x34a8f886, 0x4db9caf6, 0xc68a9c66, 0xbf9bae16, 0xd50047b7, 0xac1175c7, 0x27222357, 0x5e331127,
    0x6e432e9d, 0x17521ced, 0x9c614a7d, 0xe570780d, 0x8feb91ac, 0xf6faa3dc, 0x7dc9f54c, 0x04d8c73c,
    0xa8fe260e, 0xd1ef147e, 0x5adc42ee, 0x23cd709e, 0x4956993f, 0x3047ab4f, 0xbb74fddf, 0xc265cfaf,
    0xe6d5494a, 0x9fc47b3a, 0x14f72daa, 0x6de61fda, 0x077df67b, 0x7e6cc40b, 0xf55f929b, 0x8c4ea0eb,
    0x206841d9, 0x597973a9, 0xd24a2539, 0xab5b1749, 0xc1c0fee8, 0xb8d1cc98, 0x33e29a08, 0x4af3a878
  },
  {
    0x00000000, 0xa605caf8, 0x49e7e301, 0xefe229f9, 0x93cfc602, 0x35ca0cfa, 0xda282503, 0x7c2deffb,
    0x2273faf5, 0x8476300d, 0x6b9419f4, 0xcd91d30c, 0xb1bc3cf7, 0x17b9f60f, 0xf85bdff6, 0x5e5e150e,
    0x44e7f5ea, 0xe2e23f12, 0x0d0016eb, 0xab05dc13, 0xd72833e8, 0x712df910, 0x9ecfd0e9, 0x38ca1a11,
    0x66940f1f, 0xc091c5e7, 0x2f73ec1e, 0x897626e6, 0xf55bc91d, 0x535e03e5, 0xbcbc2a1c, 0x1ab9e0e4,
    0x89cfebd4, 0x2fca212c, 0xc02808d5, 0x662dc22d, 0x1a002dd6, 0xbc05e72e, 0x53e7ced7, 0xf5e2042f,
    0xabbc1121, 0x0db9dbd9, 0xe25bf220, 0x445e38d8, 0x3873d723, 0x9e761ddb, 0x71943422, 0xd791feda,
    0xcd281e3e, 0x6b2dd4c6, 0x84cffd3f, 0x22ca37c7, 0x5ee7d83c, 0xf8e212c4, 0x17003b3d, 0xb105f1c5,
    0xef5be4cb, 0x495e2e33, 0xa6bc07ca, 0x00b9cd32, 0x7c9422c9, 0xda91e831, 0x3573c1c8, 0x93760b30,
    0x1673a159, 0xb0766ba1, 0x5f944258, 0xf99188a0, 0x85bc675b, 0x23b9ada3, 0xcc5b845a, 0x6a5e4ea2,
    0x34005bac, 0x92059154, 0x7de7b8ad, 0xdbe27255, 0xa7cf9dae, 0x01ca5756, 0xee287eaf, 0x482db457,
    0x529454b3, 0xf4919e4b, 0x1b73b7b2, 0xbd767d4a, 0xc15b92b1, 0x675e5849, 0x88bc71b0, 0x2eb9bb48,
    0x70e7ae46, 0xd6e264be, 0x39004d47, 0x9f0587bf, 0xe3286844, 0x452da2bc, 0xaacf8b45, 0x0cca41bd,
    0x9fbc4a8d, 0x39b98075, 0xd65ba98c, 0x705e6374, 0x0c738c8f, 0xaa764677, 0x45946f8e, 0xe391a576,
    0xbdcfb078, 0x1bca7a80, 0xf4285379, 0x522d9981, 0x2e00767a, 0x8805bc82, 0x67e7957b, 0xc1e25f83,
    0xdb5bbf67, 0x7d5e759f, 0x92bc5c66, 0x34b9969e, 0x48947965, 0xee91b39d, 0x01739a64, 0xa776509c,
    0xf9284592, 0x5f2d8f6a, 0xb0cfa693, 0x16ca6c6b, 0x6ae78390, 0xcce24968, 0x23006091, 0x8505aa69,
    0x2ce742b2, 0x8ae2884a, 0x6500a1b3, 0xc3056b4b, 0xbf2884b0, 0x192d4e48, 0xf6cf67b1, 0x50caad49,
    0x0e94b847, 0xa89172bf, 0x47735b46, 0xe17691be, 0x9d5b7e45, 0x3b5eb4bd, 0xd4bc9d44, 0x72b957bc,
    0x6800b758, 0xce057da0, 0x21e75459, 0x87e29ea1, 0xfbcf715a, 0x5dcabba2, 0xb228925b, 0x142d58a3,
    0x4a734dad, 0xec768755, 0x0394aeac, 0xa5916454, 0xd9bc8baf, 0x7fb94157, 0x905b68ae, 0x365ea256,
    0xa528a966, 0x032d639e, 0xeccf4a67, 0x4aca809f, 0x36e76f64, 0x90e2a59c, 0x7f008c65, 0xd905469d,
    0x875b5393, 0x215e996b, 0xcebcb092, 0x68b97a6a, 0x14949591, 0xb2915f69, 0x5d737690, 0xfb76bc68,
    0xe1cf5c8c, 0x47ca9674, 0xa828bf8d, 0x0e2d7575, 0x72009a8e, 0xd4055076, 0x3be7798f, 0x9de2b377,
    0xc3bca679, 0x65b96c81, 0x8a5b4578, 0x2c5e8f80, 0x5073607b, 0xf676aa83, 0x1994837a, 0xbf914982,
    0x3a94e3eb, 0x9c912913, 0x737300ea, 0xd576ca12, 0xa95b25e9, 0x0f5eef11, 0xe0bcc6e8, 0x46b90c10,
    0x18e7191e, 0xbee2d3e6, 0x5100fa1f, 0xf70530e7, 0x8b28df1c, 0x2d2d15e4, 0xc2cf3c1d, 0x64caf6e5,
    0x7e731601, 0xd876dcf9, 0x3794f500, 0x91913ff8, 0xedbcd003, 0x4bb91afb, 0xa45b3302, 0x025ef9fa,
    0x5c00ecf4, 0xfa05260c, 0x15e70ff5, 0xb3e2c50d, 0xcfcf2af6, 0x69cae00e, 0x8628c9f7, 0x202d030f,
    0xb35b083f, 0x155ec2c7, 0xfabceb3e, 0x5cb921c6, 0x2094ce3d, 0x869104c5, 0x69732d3c, 0xcf76e7c4,
    0x9128f2ca, 0x372d3832, 0xd8cf11cb, 0x7ecadb33, 0x02e734c8, 0xa4e2fe30, 0x4b00d7c9, 0xed051d31,
    0xf7bcfdd5, 0x51b9372d, 0xbe5b1ed4, 0x185ed42c, 0x64733bd7, 0xc276f12f, 0x2d94d8d6, 0x8b91122e,
    0xd5cf0720, 0x73cacdd8, 0x9c28e421, 0x3a2d2ed9, 0x4600c122, 0xe0050bda, 0x0fe72223, 0xa9e2e8db
  },
  {
    0x00000000, 0x59ce8564, 0xb39d0ac8, 0xea538fac, 0x62d66361, 0x3b18e605, 0xd14b69a9, 0x8885eccd,
    0xc5acc6c2, 0x9c6243a6, 0x7631cc0a, 0x2fff496e, 0xa77aa5a3, 0xfeb420c7, 0x14e7af6b, 0x4d292a0f,
    0x8eb5fb75, 0xd77b7e11, 0x3d28f1bd, 0x64e674d9, 0xec639814, 0xb5ad1d70, 0x5ffe92dc, 0x063017b8,
    0x4b193db7, 0x12d7b8d3, 0xf884377f, 0xa14ab21b, 0x29cf5ed6, 0x7001dbb2, 0x9a52541e, 0xc39cd17a,
    0x1887801b, 0x4149057f, 0xab1a8ad3, 0xf2d40fb7, 0x7a51e37a, 0x239f661e, 0xc9cce9b2, 0x90026cd6,
    0xdd2b46d9, 0x84e5c3bd, 0x6eb64c11, 0x3778c975, 0xbffd25b8, 0xe633a0dc, 0x0c602f70, 0x55aeaa14,
    0x96327b6e, 0xcffcfe0a, 0x25af71a6, 0x7c61f4c2, 0xf4e4180f, 0xad2a9d6b, 0x477912c7, 0x1eb797a3,
    0x539ebdac, 0x0a5038c8, 0xe003b764, 0xb9cd3200, 0x3148decd, 0x68865ba9, 0x82d5d405, 0xdb1b5161,
    0x310f0036, 0x68c18552, 0x82920afe, 0xdb5c8f9a, 0x53d96357, 0x0a17e633, 0xe044699f, 0xb98aecfb,
    0xf4a3c6f4, 0xad6d4390, 0x473ecc3c, 0x1ef04958, 0x9675a595, 0xcfbb20f1, 0x25e8af5d, 0x7c262a39,
    0xbfbafb43, 0xe6747e27, 0x0c27f18b, 0x55e974ef, 0xdd6c9822, 0x84a21d46, 0x6ef192ea, 0x373f178e,
    0x7a163d81, 0x23d8b8e5, 0xc98b3749, 0x9045b22d, 0x18c05ee0, 0x410edb84, 0xab5d5428, 0xf293d14c,
    0x2988802d, 0x70460549, 0x9a158ae5, 0xc3db0f81, 0x4b5ee34c, 0x12906628, 0xf8c3e984, 0xa10d6ce0,
    0xec2446ef, 0xb5eac38b, 0x5fb94c27, 0x0677c943, 0x8ef2258e, 0xd73ca0ea, 0x3d6f2f46, 0x64a1aa22,
    0xa73d7b58, 0xfef3fe3c, 0x14a07190, 0x4d6ef4f4, 0xc5eb1839, 0x9c259d5d, 0x767612f1, 0x2fb89795,
    0x6291bd9a, 0x3b5f38fe, 0xd10cb752, 0x88c23236, 0x0047defb, 0x59895b9f, 0xb3dad433, 0xea145157,
    0x621e006c, 0x3bd08508, 0xd1830aa4, 0x884d8fc0, 0x00c8630d, 0x5906e669, 0xb35569c5, 0xea9beca1,
    0xa7b2c6ae, 0xfe7c43ca, 0x142fcc66, 0x4de14902, 0xc564a5cf, 0x9caa20ab, 0x76f9af07, 0x2f372a63,
    0xecabfb19, 0xb5657e7d, 0x5f36f1d1, 0x06f874b5, 0x8e7d9878, 0xd7b31d1c, 0x3de092b0, 0x642e17d4,
    0x29073ddb, 0x70c9b8bf, 0x9a9a3713, 0xc354b277, 0x4bd15eba, 0x121fdbde, 0xf84c5472, 0xa182d116,
    0x7a998077, 0x23570513, 0xc9048abf, 0x90ca0fdb, 0x184fe316, 0x41816672, 0xabd2e9de, 0xf21c6cba,
    0xbf3546b5, 0xe6fbc3d1, 0x0ca84c7d, 0x5566c919, 0xdde325d4, 0x842da0b0, 0x6e7e2f1c, 0x37b0aa78,
    0xf42c7b02, 0xade2fe66, 0x47b171ca, 0x1e7ff4ae, 0x96fa1863, 0xcf349d07, 0x256712ab, 0x7ca997cf,
    0x3180bdc0, 0x684e38a4, 0x821db708, 0xdbd3326c, 0x5356dea1, 0x0a985bc5, 0xe0cbd469, 0xb905510d,
    0x5311005a, 0x0adf853e, 0xe08c0a92, 0xb9428ff6, 0x31c7633b, 0x6809e65f, 0x825a69f3, 0xdb94ec97,
    0x96bdc698, 0xcf7343fc, 0x2520cc50, 0x7cee4934, 0xf46ba5f9, 0xada5209d, 0x47f6af31, 0x1e382a55,
    0xdda4fb2f, 0x846a7e4b, 0x6e39f1e7, 0x37f77483, 0xbf72984e, 0xe6bc1d2a, 0x0cef9286, 0x552117e2,
    0x18083ded, 0x41c6b889, 0xab953725, 0xf25bb241, 0x7ade5e8c, 0x2310dbe8, 0xc9435444, 0x908dd120,
    0x4b968041, 0x12580525, 0xf80b8a89, 0xa1c50fed, 0x2940e320, 0x708e6644, 0x9adde9e8, 0xc3136c8c,
    0x8e3a4683, 0xd7f4c3e7, 0x3da74c4b, 0x6469c92f, 0xecec25e2, 0xb522a086, 0x5f712f2a, 0x06bfaa4e,
    0xc5237b34, 0x9cedfe50, 0x76be71fc, 0x2f70f498, 0xa7f51855, 0xfe3b9d31, 0x1468129d, 0x4da697f9,
    0x008fbdf6, 0x59413892, 0xb312b73e, 0xeadc325a, 0x6259de97, 0x3b975bf3, 0xd1c4d45f, 0x880a513b
  },
  {
    0x00000000, 0xc43c00d8, 0x8d947741, 0x49a87799, 0x1ec49873, 0xdaf898ab, 0x9350ef32, 0x576cefea,
    0x3d8930e6, 0xf9b5303e, 0xb01d47a7, 0x7421477f, 0x234da895, 0xe771a84d, 0xaed9dfd4, 0x6ae5df0c,
    0x7b1261cc, 0xbf2e6114, 0xf686168d, 0x32ba1655, 0x65d6f9bf, 0xa1eaf967, 0xe8428efe, 0x2c7e8e26,
    0x469b512a, 0x82a751f2, 0xcb0f266b, 0x0f3326b3, 0x585fc959, 0x9c63c981, 0xd5cbbe18, 0x11f7bec0,
    0xf624c398, 0x3218c340, 0x7bb0b4d9, 0xbf8cb401, 0xe8e05beb, 0x2cdc5b33, 0x65742caa, 0xa1482c72,
    0xcbadf37e, 0x0f91f3a6, 0x4639843f, 0x820584e7, 0xd5696b0d, 0x11556bd5, 0x58fd1c4c, 0x9cc11c94,
    0x8d36a254, 0x490aa28c, 0x00a2d515, 0xc49ed5cd, 0x93f23a27, 0x57ce3aff, 0x1e664d66, 0xda5a4dbe,
    0xb0bf92b2, 0x7483926a, 0x3d2be5f3, 0xf917e52b, 0xae7b0ac1, 0x6a470a19, 0x23ef7d80, 0xe7d37d58,
    0xe9a5f1c1, 0x2d99f119, 0x64318680, 0xa00d8658, 0xf76169b2, 0x335d696a, 0x7af51ef3, 0xbec91e2b,
    0xd42cc127, 0x1010c1ff, 0x59b8b666, 0x9d84b6be, 0xcae85954, 0x0ed4598c, 0x477c2e15, 0x83402ecd,
    0x92b7900d, 0x568b90d5, 0x1f23e74c, 0xdb1fe794, 0x8c73087e, 0x484f08a6, 0x01e77f3f, 0xc5db7fe7,
    0xaf3ea0eb, 0x6b02a033, 0x22aad7aa, 0xe696d772, 0xb1fa3898, 0x75c63840, 0x3c6e4fd9, 0xf8524f01,
    0x1f813259, 0xdbbd3281, 0x92154518, 0x562945c0, 0x0145aa2a, 0xc579aaf2, 0x8cd1dd6b, 0x48edddb3,
    0x220802bf, 0xe6340267, 0xaf9c75fe, 0x6ba07526, 0x3ccc9acc, 0xf8f09a14, 0xb158ed8d, 0x7564ed55,
    0x64935395, 0xa0af534d, 0xe90724d4, 0x2d3b240c, 0x7a57cbe6, 0xbe6bcb3e, 0xf7c3bca7, 0x33ffbc7f,
    0x591a6373, 0x9d2663ab, 0xd48e1432, 0x10b214ea, 0x47defb00, 0x83e2fbd8, 0xca4a8c41, 0x0e768c99,
    0xd6a79573, 0x129b95ab, 0x5b33e232, 0x9f0fe2ea, 0xc8630d00, 0x0c5f0dd8, 0x45f77a41, 0x81cb7a99,
    0xeb2ea595, 0x2f12a54d, 0x66bad2d4, 0xa286d20c, 0xf5ea3de6, 0x31d63d3e, 0x787e4aa7, 0xbc424a7f,
    0xadb5f4bf, 0x6989f467, 0x202183fe, 0xe41d8326, 0xb3716ccc, 0x774d6c14, 0x3ee51b8d, 0xfad91b55,
    0x903cc459, 0x5400c481, 0x1da8b318, 0xd994b3c0, 0x8ef85c2a, 0x4ac45cf2, 0x036c2b6b, 0xc7502bb3,
    0x208356eb, 0xe4bf5633, 0xad1721aa, 0x692b2172, 0x3e47ce98, 0xfa7bce40, 0xb3d3b9d9, 0x77efb901,
    0x1d0a660d, 0xd93666d5, 0x909e114c, 0x54a21194, 0x03cefe7e, 0xc7f2fea6, 0x8e5a893f, 0x4a6689e7,
    0x5b913727, 0x9fad37ff, 0xd6054066, 0x123940be, 0x4555af54, 0x8169af8c, 0xc8c1d815, 0x0cfdd8cd,
    0x661807c1, 0xa2240719, 0xeb8c7080, 0x2fb07058, 0x78dc9fb2, 0xbce09f6a, 0xf548e8f3, 0x3174e82b,
    0x3f0264b2, 0xfb3e646a, 0xb29613f3, 0x76aa132b, 0x21c6fcc1, 0xe5fafc19, 0xac528b80, 0x686e8b58,
    0x028b5454, 0xc6b7548c, 0x8f1f2315, 0x4b2323cd, 0x1c4fcc27, 0xd873ccff, 0x91dbbb66, 0x55e7bbbe,
    0x4410057e, 0x802c05a6, 0xc984723f, 0x0db872e7, 0x5ad49d0d, 0x9ee89dd5, 0xd740ea4c, 0x137cea94,
    0x79993598, 0xbda53540, 0xf40d42d9, 0x30314201, 0x675dadeb, 0xa361ad33, 0xeac9daaa, 0x2ef5da72,
    0xc926a72a, 0x0d1aa7f2, 0x44b2d06b, 0x808ed0b3, 0xd7e23f59, 0x13de3f81, 0x5a764818, 0x9e4a48c0,
    0xf4af97cc, 0x30939714, 0x793be08d, 0xbd07e055, 0xea6b0fbf, 0x2e570f67, 0x67ff78fe, 0xa3c37826,
    0xb234c6e6, 0x7608c63e, 0x3fa0b1a7, 0xfb9cb17f, 0xacf05e95, 0x68cc5e4d, 0x216429d4, 0xe558290c,
    0x8fbdf600, 0x4b81f6d8, 0x02298141, 0xc6158199, 0x91796e73, 0x55456eab, 0x1ced1932, 0xd8d119ea
  }
};

static uint32_t crc32c_shift_chunk(uint32_t crc){
  return crc32c_shift_chunk_table1360[0][crc&0xff]^
         crc32c_shift_chunk_table1360[1][(crc>>8)&0xff]^
         crc32c_shift_chunk_table1360[2][(crc>>16)&0xff]^
         crc32c_shift_chunk_table1360[3][crc>>24];
}

#if defined(_WIN64) || defined(__x86_64__)
#define CRC32_WORD_SIZE 8
#define CRC32_WORD_TYPE uint64_t
#define CRC32_WORD_HW CRC32C_64BIT_HW
static uint32_t psync_crc32c_hw(uint64_t crc0, const void *ptr, size_t len){
#else
#define CRC32_WORD_SIZE 4
#define CRC32_WORD_TYPE uint32_t
#define CRC32_WORD_HW CRC32C_32BIT_HW
static uint32_t psync_crc32c_hw(uint32_t crc0, const void *ptr, size_t len){
#endif
  const char *data0;
  data0=(const char *)ptr;
  while (((uintptr_t)data0)%CRC32_WORD_SIZE && len){
    CRC32C_8BIT_HW(crc0, *data0);
    data0++;
    len--;
  }
  while (len>=CRC32_PARALLEL_CHUNK*3){
    CRC32_WORD_TYPE crc1, crc2;
    const char *end;
    len-=CRC32_PARALLEL_CHUNK*3;
    crc1=0;
    crc2=0;
    end=data0+CRC32_PARALLEL_CHUNK;
    do {
      CRC32_WORD_HW(crc0, *((CRC32_WORD_TYPE *)data0));
      CRC32_WORD_HW(crc1, *((CRC32_WORD_TYPE *)(data0+CRC32_PARALLEL_CHUNK)));
      CRC32_WORD_HW(crc2, *((CRC32_WORD_TYPE *)(data0+CRC32_PARALLEL_CHUNK*2)));
      data0+=CRC32_WORD_SIZE;
    } while (data0<end);
    data0+=CRC32_PARALLEL_CHUNK*2;
    crc0=crc32c_shift_chunk(crc0)^crc1;
    crc0=crc32c_shift_chunk(crc0)^crc2;
  }
  while (len>=CRC32_WORD_SIZE*4){
    len-=CRC32_WORD_SIZE*4;
    CRC32_WORD_HW(crc0, *((CRC32_WORD_TYPE *)data0));
    data0+=CRC32_WORD_SIZE;
    CRC32_WORD_HW(crc0, *((CRC32_WORD_TYPE *)data0));
    data0+=CRC32_WORD_SIZE;
    CRC32_WORD_HW(crc0, *((CRC32_WORD_TYPE *)data0));
    data0+=CRC32_WORD_SIZE;
    CRC32_WORD_HW(crc0, *((CRC32_WORD_TYPE *)data0));
    data0+=CRC32_WORD_SIZE;
  }
  while (len>=CRC32_WORD_SIZE){
    len-=CRC32_WORD_SIZE;
    CRC32_WORD_HW(crc0, *((CRC32_WORD_TYPE *)data0));
    data0+=CRC32_WORD_SIZE;
  }
  while (len){
    len--;
    CRC32C_8BIT_HW(crc0, *data0);
    data0++;
  }
  return crc0;
}

PSYNC_NOINLINE static uint32_t psync_crc32c_init(uint32_t crc, const void *ptr, size_t len){
  crc_hashw=psync_has_hw_crc()+1;
  if (likely(crc_hashw==2))
    return psync_crc32c_hw(crc, ptr, len);
  else
    return psync_crc32c_sw(crc, ptr, len);
}

uint32_t psync_crc32c(uint32_t crc, const void *ptr, size_t len){
#if defined(CRC32_GNUC) && defined(__SSE4_2__)
  return psync_crc32c_hw(crc, ptr, len);
#else
  if (unlikely(!crc_hashw))
    return psync_crc32c_init(crc, ptr, len);
  if (likely(crc_hashw==2))
    return psync_crc32c_hw(crc, ptr, len);
  else
    return psync_crc32c_sw(crc, ptr, len);
#endif
}

#endif

/* psync_fast_hash256 has some similarities to CityHash256Crc, but works with state.
 * 
 * https://code.google.com/p/cityhash/
 */

void psync_fast_hash256_init(psync_fast_hash256_ctx *ctx){
#ifdef CRC32_HW
  if (unlikely(!crc_hashw))
    crc_hashw=psync_has_hw_crc()+1;
#endif
  memcpy(ctx->state, &crc32c_table[0][2], sizeof(ctx->state));
  ctx->length=0;
  ctx->buff[PSYNC_FAST_HASH256_BLOCK_LEN-1]=0;
}

void psync_fast_hash256_init_seed(psync_fast_hash256_ctx *ctx, const void *seed, size_t seedlen){
  size_t i;
  psync_fast_hash256_init(ctx);
  if (seedlen>sizeof(ctx->state))
    seedlen=sizeof(ctx->state);
  for (i=0; i<seedlen; i++)
    ((unsigned char *)ctx->state)[i]^=((const unsigned char *)seed)[i];
}

#define FH_LOAD_STATE() do{\
  a=ctx->state[0];\
  b=ctx->state[1];\
  c=ctx->state[2];\
  d=ctx->state[3];\
  x=ctx->state[4];\
  y=ctx->state[5];\
} while (0)

#define FH_SAVE_STATE() do{\
  ctx->state[0]=a;\
  ctx->state[1]=b;\
  ctx->state[2]=c;\
  ctx->state[3]=d;\
  ctx->state[4]=x;\
  ctx->state[5]=y;\
}  while (0)

#define ROTATE_4_64(a, b, c, d) do{\
  uint64_t __tmp=d;\
  d=c;\
  c=b;\
  b=a;\
  a=__tmp;\
} while (0)

#define ROTATE_2_64(a, b) do{\
  uint64_t __tmp=b;\
  b=a;\
  a=__tmp;\
} while (0)

#define ROUND_GEN(from, mul, crc)\
do{\
  a+=fh_load64(from[0*mul]);\
  b+=fh_load64(from[1*mul]);\
  c+=fh_load64(from[2*mul]);\
  d+=fh_load64(from[3*mul]);\
  b^=fh_rotate64(a, 21);\
  d^=fh_rotate64(c, 17);\
  x=crc(x, a+b);\
  y=crc(y, c+d);\
  a+=fh_load64(from[4*mul]);\
  b+=fh_load64(from[5*mul]);\
  c+=fh_load64(from[6*mul]);\
  d+=fh_load64(from[7*mul]);\
  a^=fh_rotate64(b, 13);\
  c^=fh_rotate64(d, 16);\
  x=crc(x, a+b);\
  y=crc(y, c+d);\
  ROTATE_4_64(a, b, c, d);\
  ROTATE_2_64(x, y);\
} while (0)

#ifdef CRC32_HW
#define ROUND_BUFF() do{\
  if (crc_hashw==2)\
    ROUND_GEN(&ctx->buff64, 1, fh_crc32_64hw);\
  else\
    ROUND_GEN(&ctx->buff64, 1, fh_crc32_64sw);\
} while (0)

#define ROUND_BUFF_SW() ROUND_GEN(&ctx->buff64, 1, fh_crc32_64sw)
#define ROUND_BUFF_HW() ROUND_GEN(&ctx->buff64, 1, fh_crc32_64hw)

#else

#define ROUND_BUFF() ROUND_GEN(&ctx->buff64, 1, fh_crc32_64sw)
#define ROUND_BUFF_SW() ROUND_BUFF()

#endif

#define ROUND_CDATA_SW() ROUND_GEN(&cdata, 8, fh_crc32_64sw)
#define ROUND_CDATA_HW() ROUND_GEN(&cdata, 8, fh_crc32_64hw)

// From CityHash
static inline uint64_t fh_shiftmix(uint64_t val) {
  return val^(val>>47);
}

static inline uint64_t fh_rotate64(uint64_t val, int shift){
  return shift?((val>>shift)|(val<<(64-shift))):val;
}

static inline uint64_t fh_load64(const void *ptr){
  uint64_t r;
  memcpy(&r, ptr, sizeof(uint64_t));
  return r;
}

// From CityHash/Murmur
static uint64_t fh_hashmul3(uint64_t u, uint64_t v, uint64_t mul){
  return fh_shiftmix((fh_shiftmix((u^v)*mul)^v)*mul)*mul;
}

static uint64_t fh_hashmul2(uint64_t u, uint64_t v){
  return fh_hashmul3(u, v, 0x9ddfea08eb382d69ULL);
}

static inline uint64_t fh_crc32_64sw(uint64_t crc, uint64_t data){
  CRC32C_64BIT_UINT(crc, data);
  return crc;
}

#ifdef CRC32_HW
#if defined(_WIN64) || defined(__x86_64__)
static inline uint64_t fh_crc32_64hw(uint64_t crc, uint64_t data){
  CRC32C_64BIT_HW(crc, data);
  return crc;
}
#else
static inline uint32_t fh_crc32_64hw(uint32_t crc, uint64_t data){
  CRC32C_32BIT_HW(crc, data&0xffffffffU);
  CRC32C_32BIT_HW(crc, data>>32);
  return crc;
}
#endif

static void psync_fast_hash256_update_long_hw(psync_fast_hash256_ctx *ctx, const char *cdata, size_t len);
#endif

static void psync_fast_hash256_update_long_sw(psync_fast_hash256_ctx *ctx, const char *cdata, size_t len);
static void psync_fast_hash256_update_short_sw(psync_fast_hash256_ctx *ctx, const char *cdata, size_t len);

void psync_fast_hash256_update(psync_fast_hash256_ctx *ctx, const void *data, size_t len){
  ctx->length+=len;
  if (len+ctx->buff[PSYNC_FAST_HASH256_BLOCK_LEN-1]<PSYNC_FAST_HASH256_BLOCK_LEN)
    psync_fast_hash256_update_short_sw(ctx, (const char *)data, len);
#ifdef CRC32_HW
  else if (crc_hashw==2)
    psync_fast_hash256_update_long_hw(ctx, (const char *)data, len);
  else
    psync_fast_hash256_update_long_sw(ctx, (const char *)data, len);
#else
  else
    psync_fast_hash256_update_long_sw(ctx, (const char *)data, len);
#endif
}

PSYNC_NOINLINE static void psync_fast_hash256_update_short_sw(psync_fast_hash256_ctx *ctx, const char *cdata, size_t len){
  uint32_t l=ctx->buff[PSYNC_FAST_HASH256_BLOCK_LEN-1];
  ctx->buff[PSYNC_FAST_HASH256_BLOCK_LEN-1]=l+len;
  memcpy(ctx->buff+l, cdata, len);
}

#ifdef CRC32_HW
PSYNC_NOINLINE static void psync_fast_hash256_update_long_hw(psync_fast_hash256_ctx *ctx, const char *cdata, size_t len){
  uint64_t a, b, c, d, x, y;
  FH_LOAD_STATE();
  if (ctx->buff[PSYNC_FAST_HASH256_BLOCK_LEN-1]){
    uint32_t l=ctx->buff[PSYNC_FAST_HASH256_BLOCK_LEN-1];
    memcpy(ctx->buff+l, cdata, PSYNC_FAST_HASH256_BLOCK_LEN-l);
    l=PSYNC_FAST_HASH256_BLOCK_LEN-l;
    len-=l;
    cdata+=l;
    ROUND_BUFF_HW();
  }
  while (len>=PSYNC_FAST_HASH256_BLOCK_LEN){
    ROUND_CDATA_HW();
    len-=PSYNC_FAST_HASH256_BLOCK_LEN;
    cdata+=PSYNC_FAST_HASH256_BLOCK_LEN;
  }
  FH_SAVE_STATE();
  memcpy(ctx->buff, cdata, len);
  ctx->buff[PSYNC_FAST_HASH256_BLOCK_LEN-1]=len;
}
#endif

PSYNC_NOINLINE static void psync_fast_hash256_update_long_sw(psync_fast_hash256_ctx *ctx, const char *cdata, size_t len){
  uint64_t a, b, c, d, x, y;
  FH_LOAD_STATE();
  if (ctx->buff[PSYNC_FAST_HASH256_BLOCK_LEN-1]){
    uint32_t l=ctx->buff[PSYNC_FAST_HASH256_BLOCK_LEN-1];
    memcpy(ctx->buff+l, cdata, PSYNC_FAST_HASH256_BLOCK_LEN-l);
    l=PSYNC_FAST_HASH256_BLOCK_LEN-l;
    len-=l;
    cdata+=l;
    ROUND_BUFF_SW();
  }
  while (len>=PSYNC_FAST_HASH256_BLOCK_LEN){
    ROUND_CDATA_SW();
    len-=PSYNC_FAST_HASH256_BLOCK_LEN;
    cdata+=PSYNC_FAST_HASH256_BLOCK_LEN;
  }
  FH_SAVE_STATE();
  memcpy(ctx->buff, cdata, len);
  ctx->buff[PSYNC_FAST_HASH256_BLOCK_LEN-1]=len;
}

void psync_fast_hash256_final(void *hash, psync_fast_hash256_ctx *ctx){
  uint64_t a, b, c, d, x, y, len;
  len=ctx->buff[PSYNC_FAST_HASH256_BLOCK_LEN-1];
  memcpy(ctx->buff+len, &crc32c_table[1][2], PSYNC_FAST_HASH256_BLOCK_LEN-len);
  len=ctx->length;
  ctx->buff64[0]+=len*k0;
  ctx->buff64[1]^=fh_hashmul2(len, k0);
  ctx->buff64[2]^=len*k1;
  ctx->buff64[3]-=len*k2;
  FH_LOAD_STATE();
  ROUND_BUFF();
  d^=fh_rotate64(a, 43);
  a+=fh_rotate64(b, 42);
  b^=fh_rotate64(c, 41);
  c+=fh_rotate64(d, 40);
  a=fh_hashmul2(a, x+b);
  b=fh_hashmul2(b, y+c);
  c=fh_hashmul2(c, x+d);
  d=fh_hashmul2(d, y+a);
  ctx->buff64[0]=a+b+y+x;
  ctx->buff64[1]=fh_shiftmix((a+x)*k0)*k0+b;
  ctx->buff64[2]=fh_shiftmix((c^y)*k1)*k1+d;
  ctx->buff64[3]=fh_shiftmix((x-y)*k2)*k2+(c^d);;
  memcpy(hash, ctx->buff64, PSYNC_FAST_HASH256_LEN);
}