xref: /src/external/bsd/elftosb/dist/common/crc.cpp

/*
 * File:	crc.cpp
 *
 * Copyright (c) Freescale Semiconductor, Inc. All rights reserved.
 * See included license file for license details.
 */

#include "crc.h"

//! Table of CRC-32's of all single byte values. The values in
//! this table are those used in the Ethernet CRC algorithm.
const uint32_t CRC32::m_tab[] = {
//#ifdef __LITTLE_ENDIAN__
    0x00000000,
    0x04c11db7, 0x09823b6e, 0x0d4326d9, 0x130476dc, 0x17c56b6b,
    0x1a864db2, 0x1e475005, 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6,
    0x2b4bcb61, 0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd,
    0x4c11db70, 0x48d0c6c7, 0x4593e01e, 0x4152fda9, 0x5f15adac,
    0x5bd4b01b, 0x569796c2, 0x52568b75, 0x6a1936c8, 0x6ed82b7f,
    0x639b0da6, 0x675a1011, 0x791d4014, 0x7ddc5da3, 0x709f7b7a,
    0x745e66cd, 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039,
    0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, 0xbe2b5b58,
    0xbaea46ef, 0xb7a96036, 0xb3687d81, 0xad2f2d84, 0xa9ee3033,
    0xa4ad16ea, 0xa06c0b5d, 0xd4326d90, 0xd0f37027, 0xddb056fe,
    0xd9714b49, 0xc7361b4c, 0xc3f706fb, 0xceb42022, 0xca753d95,
    0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1, 0xe13ef6f4,
    0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, 0x34867077, 0x30476dc0,
    0x3d044b19, 0x39c556ae, 0x278206ab, 0x23431b1c, 0x2e003dc5,
    0x2ac12072, 0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16,
    0x018aeb13, 0x054bf6a4, 0x0808d07d, 0x0cc9cdca, 0x7897ab07,
    0x7c56b6b0, 0x71159069, 0x75d48dde, 0x6b93dddb, 0x6f52c06c,
    0x6211e6b5, 0x66d0fb02, 0x5e9f46bf, 0x5a5e5b08, 0x571d7dd1,
    0x53dc6066, 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
    0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, 0xbfa1b04b,
    0xbb60adfc, 0xb6238b25, 0xb2e29692, 0x8aad2b2f, 0x8e6c3698,
    0x832f1041, 0x87ee0df6, 0x99a95df3, 0x9d684044, 0x902b669d,
    0x94ea7b2a, 0xe0b41de7, 0xe4750050, 0xe9362689, 0xedf73b3e,
    0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2, 0xc6bcf05f,
    0xc27dede8, 0xcf3ecb31, 0xcbffd686, 0xd5b88683, 0xd1799b34,
    0xdc3abded, 0xd8fba05a, 0x690ce0ee, 0x6dcdfd59, 0x608edb80,
    0x644fc637, 0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb,
    0x4f040d56, 0x4bc510e1, 0x46863638, 0x42472b8f, 0x5c007b8a,
    0x58c1663d, 0x558240e4, 0x51435d53, 0x251d3b9e, 0x21dc2629,
    0x2c9f00f0, 0x285e1d47, 0x36194d42, 0x32d850f5, 0x3f9b762c,
    0x3b5a6b9b, 0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff,
    0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, 0xf12f560e,
    0xf5ee4bb9, 0xf8ad6d60, 0xfc6c70d7, 0xe22b20d2, 0xe6ea3d65,
    0xeba91bbc, 0xef68060b, 0xd727bbb6, 0xd3e6a601, 0xdea580d8,
    0xda649d6f, 0xc423cd6a, 0xc0e2d0dd, 0xcda1f604, 0xc960ebb3,
    0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7, 0xae3afba2,
    0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, 0x9b3660c6, 0x9ff77d71,
    0x92b45ba8, 0x9675461f, 0x8832161a, 0x8cf30bad, 0x81b02d74,
    0x857130c3, 0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640,
    0x4e8ee645, 0x4a4ffbf2, 0x470cdd2b, 0x43cdc09c, 0x7b827d21,
    0x7f436096, 0x7200464f, 0x76c15bf8, 0x68860bfd, 0x6c47164a,
    0x61043093, 0x65c52d24, 0x119b4be9, 0x155a565e, 0x18197087,
    0x1cd86d30, 0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
    0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, 0x2497d08d,
    0x2056cd3a, 0x2d15ebe3, 0x29d4f654, 0xc5a92679, 0xc1683bce,
    0xcc2b1d17, 0xc8ea00a0, 0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb,
    0xdbee767c, 0xe3a1cbc1, 0xe760d676, 0xea23f0af, 0xeee2ed18,
    0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4, 0x89b8fd09,
    0x8d79e0be, 0x803ac667, 0x84fbdbd0, 0x9abc8bd5, 0x9e7d9662,
    0x933eb0bb, 0x97ffad0c, 0xafb010b1, 0xab710d06, 0xa6322bdf,
    0xa2f33668, 0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4
//#else
//    0x00000000,
//    0xb71dc104, 0x6e3b8209, 0xd926430d, 0xdc760413, 0x6b6bc517,
//    0xb24d861a, 0x0550471e, 0xb8ed0826, 0x0ff0c922, 0xd6d68a2f,
//    0x61cb4b2b, 0x649b0c35, 0xd386cd31, 0x0aa08e3c, 0xbdbd4f38,
//    0x70db114c, 0xc7c6d048, 0x1ee09345, 0xa9fd5241, 0xacad155f,
//    0x1bb0d45b, 0xc2969756, 0x758b5652, 0xc836196a, 0x7f2bd86e,
//    0xa60d9b63, 0x11105a67, 0x14401d79, 0xa35ddc7d, 0x7a7b9f70,
//    0xcd665e74, 0xe0b62398, 0x57abe29c, 0x8e8da191, 0x39906095,
//    0x3cc0278b, 0x8bdde68f, 0x52fba582, 0xe5e66486, 0x585b2bbe,
//    0xef46eaba, 0x3660a9b7, 0x817d68b3, 0x842d2fad, 0x3330eea9,
//    0xea16ada4, 0x5d0b6ca0, 0x906d32d4, 0x2770f3d0, 0xfe56b0dd,
//    0x494b71d9, 0x4c1b36c7, 0xfb06f7c3, 0x2220b4ce, 0x953d75ca,
//    0x28803af2, 0x9f9dfbf6, 0x46bbb8fb, 0xf1a679ff, 0xf4f63ee1,
//    0x43ebffe5, 0x9acdbce8, 0x2dd07dec, 0x77708634, 0xc06d4730,
//    0x194b043d, 0xae56c539, 0xab068227, 0x1c1b4323, 0xc53d002e,
//    0x7220c12a, 0xcf9d8e12, 0x78804f16, 0xa1a60c1b, 0x16bbcd1f,
//    0x13eb8a01, 0xa4f64b05, 0x7dd00808, 0xcacdc90c, 0x07ab9778,
//    0xb0b6567c, 0x69901571, 0xde8dd475, 0xdbdd936b, 0x6cc0526f,
//    0xb5e61162, 0x02fbd066, 0xbf469f5e, 0x085b5e5a, 0xd17d1d57,
//    0x6660dc53, 0x63309b4d, 0xd42d5a49, 0x0d0b1944, 0xba16d840,
//    0x97c6a5ac, 0x20db64a8, 0xf9fd27a5, 0x4ee0e6a1, 0x4bb0a1bf,
//    0xfcad60bb, 0x258b23b6, 0x9296e2b2, 0x2f2bad8a, 0x98366c8e,
//    0x41102f83, 0xf60dee87, 0xf35da999, 0x4440689d, 0x9d662b90,
//    0x2a7bea94, 0xe71db4e0, 0x500075e4, 0x892636e9, 0x3e3bf7ed,
//    0x3b6bb0f3, 0x8c7671f7, 0x555032fa, 0xe24df3fe, 0x5ff0bcc6,
//    0xe8ed7dc2, 0x31cb3ecf, 0x86d6ffcb, 0x8386b8d5, 0x349b79d1,
//    0xedbd3adc, 0x5aa0fbd8, 0xeee00c69, 0x59fdcd6d, 0x80db8e60,
//    0x37c64f64, 0x3296087a, 0x858bc97e, 0x5cad8a73, 0xebb04b77,
//    0x560d044f, 0xe110c54b, 0x38368646, 0x8f2b4742, 0x8a7b005c,
//    0x3d66c158, 0xe4408255, 0x535d4351, 0x9e3b1d25, 0x2926dc21,
//    0xf0009f2c, 0x471d5e28, 0x424d1936, 0xf550d832, 0x2c769b3f,
//    0x9b6b5a3b, 0x26d61503, 0x91cbd407, 0x48ed970a, 0xfff0560e,
//    0xfaa01110, 0x4dbdd014, 0x949b9319, 0x2386521d, 0x0e562ff1,
//    0xb94beef5, 0x606dadf8, 0xd7706cfc, 0xd2202be2, 0x653deae6,
//    0xbc1ba9eb, 0x0b0668ef, 0xb6bb27d7, 0x01a6e6d3, 0xd880a5de,
//    0x6f9d64da, 0x6acd23c4, 0xddd0e2c0, 0x04f6a1cd, 0xb3eb60c9,
//    0x7e8d3ebd, 0xc990ffb9, 0x10b6bcb4, 0xa7ab7db0, 0xa2fb3aae,
//    0x15e6fbaa, 0xccc0b8a7, 0x7bdd79a3, 0xc660369b, 0x717df79f,
//    0xa85bb492, 0x1f467596, 0x1a163288, 0xad0bf38c, 0x742db081,
//    0xc3307185, 0x99908a5d, 0x2e8d4b59, 0xf7ab0854, 0x40b6c950,
//    0x45e68e4e, 0xf2fb4f4a, 0x2bdd0c47, 0x9cc0cd43, 0x217d827b,
//    0x9660437f, 0x4f460072, 0xf85bc176, 0xfd0b8668, 0x4a16476c,
//    0x93300461, 0x242dc565, 0xe94b9b11, 0x5e565a15, 0x87701918,
//    0x306dd81c, 0x353d9f02, 0x82205e06, 0x5b061d0b, 0xec1bdc0f,
//    0x51a69337, 0xe6bb5233, 0x3f9d113e, 0x8880d03a, 0x8dd09724,
//    0x3acd5620, 0xe3eb152d, 0x54f6d429, 0x7926a9c5, 0xce3b68c1,
//    0x171d2bcc, 0xa000eac8, 0xa550add6, 0x124d6cd2, 0xcb6b2fdf,
//    0x7c76eedb, 0xc1cba1e3, 0x76d660e7, 0xaff023ea, 0x18ede2ee,
//    0x1dbda5f0, 0xaaa064f4, 0x738627f9, 0xc49be6fd, 0x09fdb889,
//    0xbee0798d, 0x67c63a80, 0xd0dbfb84, 0xd58bbc9a, 0x62967d9e,
//    0xbbb03e93, 0x0cadff97, 0xb110b0af, 0x060d71ab, 0xdf2b32a6,
//    0x6836f3a2, 0x6d66b4bc, 0xda7b75b8, 0x035d36b5, 0xb440f7b1
//#endif // __LITTLE_ENDIAN__

// This is the original table that came with this source.
//#ifdef __LITTLE_ENDIAN__
//	0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L,
//	0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L,
//	0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L,
//	0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL,
//	0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L,
//	0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L,
//	0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L,
//	0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL,
//	0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L,
//	0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL,
//	0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L,
//	0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L,
//	0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L,
//	0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL,
//	0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL,
//	0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L,
//	0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL,
//	0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L,
//	0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L,
//	0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L,
//	0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL,
//	0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L,
//	0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L,
//	0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL,
//	0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L,
//	0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L,
//	0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L,
//	0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L,
//	0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L,
//	0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL,
//	0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL,
//	0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L,
//	0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L,
//	0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL,
//	0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL,
//	0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L,
//	0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL,
//	0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L,
//	0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL,
//	0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L,
//	0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL,
//	0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L,
//	0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L,
//	0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL,
//	0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L,
//	0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L,
//	0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L,
//	0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L,
//	0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L,
//	0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L,
//	0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL,
//	0x2d02ef8dL
//#else
//	0x00000000L, 0x96300777L, 0x2c610eeeL, 0xba510999L, 0x19c46d07L,
//	0x8ff46a70L, 0x35a563e9L, 0xa395649eL, 0x3288db0eL, 0xa4b8dc79L,
//	0x1ee9d5e0L, 0x88d9d297L, 0x2b4cb609L, 0xbd7cb17eL, 0x072db8e7L,
//	0x911dbf90L, 0x6410b71dL, 0xf220b06aL, 0x4871b9f3L, 0xde41be84L,
//	0x7dd4da1aL, 0xebe4dd6dL, 0x51b5d4f4L, 0xc785d383L, 0x56986c13L,
//	0xc0a86b64L, 0x7af962fdL, 0xecc9658aL, 0x4f5c0114L, 0xd96c0663L,
//	0x633d0ffaL, 0xf50d088dL, 0xc8206e3bL, 0x5e10694cL, 0xe44160d5L,
//	0x727167a2L, 0xd1e4033cL, 0x47d4044bL, 0xfd850dd2L, 0x6bb50aa5L,
//	0xfaa8b535L, 0x6c98b242L, 0xd6c9bbdbL, 0x40f9bcacL, 0xe36cd832L,
//	0x755cdf45L, 0xcf0dd6dcL, 0x593dd1abL, 0xac30d926L, 0x3a00de51L,
//	0x8051d7c8L, 0x1661d0bfL, 0xb5f4b421L, 0x23c4b356L, 0x9995bacfL,
//	0x0fa5bdb8L, 0x9eb80228L, 0x0888055fL, 0xb2d90cc6L, 0x24e90bb1L,
//	0x877c6f2fL, 0x114c6858L, 0xab1d61c1L, 0x3d2d66b6L, 0x9041dc76L,
//	0x0671db01L, 0xbc20d298L, 0x2a10d5efL, 0x8985b171L, 0x1fb5b606L,
//	0xa5e4bf9fL, 0x33d4b8e8L, 0xa2c90778L, 0x34f9000fL, 0x8ea80996L,
//	0x18980ee1L, 0xbb0d6a7fL, 0x2d3d6d08L, 0x976c6491L, 0x015c63e6L,
//	0xf4516b6bL, 0x62616c1cL, 0xd8306585L, 0x4e0062f2L, 0xed95066cL,
//	0x7ba5011bL, 0xc1f40882L, 0x57c40ff5L, 0xc6d9b065L, 0x50e9b712L,
//	0xeab8be8bL, 0x7c88b9fcL, 0xdf1ddd62L, 0x492dda15L, 0xf37cd38cL,
//	0x654cd4fbL, 0x5861b24dL, 0xce51b53aL, 0x7400bca3L, 0xe230bbd4L,
//	0x41a5df4aL, 0xd795d83dL, 0x6dc4d1a4L, 0xfbf4d6d3L, 0x6ae96943L,
//	0xfcd96e34L, 0x468867adL, 0xd0b860daL, 0x732d0444L, 0xe51d0333L,
//	0x5f4c0aaaL, 0xc97c0dddL, 0x3c710550L, 0xaa410227L, 0x10100bbeL,
//	0x86200cc9L, 0x25b56857L, 0xb3856f20L, 0x09d466b9L, 0x9fe461ceL,
//	0x0ef9de5eL, 0x98c9d929L, 0x2298d0b0L, 0xb4a8d7c7L, 0x173db359L,
//	0x810db42eL, 0x3b5cbdb7L, 0xad6cbac0L, 0x2083b8edL, 0xb6b3bf9aL,
//	0x0ce2b603L, 0x9ad2b174L, 0x3947d5eaL, 0xaf77d29dL, 0x1526db04L,
//	0x8316dc73L, 0x120b63e3L, 0x843b6494L, 0x3e6a6d0dL, 0xa85a6a7aL,
//	0x0bcf0ee4L, 0x9dff0993L, 0x27ae000aL, 0xb19e077dL, 0x44930ff0L,
//	0xd2a30887L, 0x68f2011eL, 0xfec20669L, 0x5d5762f7L, 0xcb676580L,
//	0x71366c19L, 0xe7066b6eL, 0x761bd4feL, 0xe02bd389L, 0x5a7ada10L,
//	0xcc4add67L, 0x6fdfb9f9L, 0xf9efbe8eL, 0x43beb717L, 0xd58eb060L,
//	0xe8a3d6d6L, 0x7e93d1a1L, 0xc4c2d838L, 0x52f2df4fL, 0xf167bbd1L,
//	0x6757bca6L, 0xdd06b53fL, 0x4b36b248L, 0xda2b0dd8L, 0x4c1b0aafL,
//	0xf64a0336L, 0x607a0441L, 0xc3ef60dfL, 0x55df67a8L, 0xef8e6e31L,
//	0x79be6946L, 0x8cb361cbL, 0x1a8366bcL, 0xa0d26f25L, 0x36e26852L,
//	0x95770cccL, 0x03470bbbL, 0xb9160222L, 0x2f260555L, 0xbe3bbac5L,
//	0x280bbdb2L, 0x925ab42bL, 0x046ab35cL, 0xa7ffd7c2L, 0x31cfd0b5L,
//	0x8b9ed92cL, 0x1daede5bL, 0xb0c2649bL, 0x26f263ecL, 0x9ca36a75L,
//	0x0a936d02L, 0xa906099cL, 0x3f360eebL, 0x85670772L, 0x13570005L,
//	0x824abf95L, 0x147ab8e2L, 0xae2bb17bL, 0x381bb60cL, 0x9b8ed292L,
//	0x0dbed5e5L, 0xb7efdc7cL, 0x21dfdb0bL, 0xd4d2d386L, 0x42e2d4f1L,
//	0xf8b3dd68L, 0x6e83da1fL, 0xcd16be81L, 0x5b26b9f6L, 0xe177b06fL,
//	0x7747b718L, 0xe65a0888L, 0x706a0fffL, 0xca3b0666L, 0x5c0b0111L,
//	0xff9e658fL, 0x69ae62f8L, 0xd3ff6b61L, 0x45cf6c16L, 0x78e20aa0L,
//	0xeed20dd7L, 0x5483044eL, 0xc2b30339L, 0x612667a7L, 0xf71660d0L,
//	0x4d476949L, 0xdb776e3eL, 0x4a6ad1aeL, 0xdc5ad6d9L, 0x660bdf40L,
//	0xf03bd837L, 0x53aebca9L, 0xc59ebbdeL, 0x7fcfb247L, 0xe9ffb530L,
//	0x1cf2bdbdL, 0x8ac2bacaL, 0x3093b353L, 0xa6a3b424L, 0x0536d0baL,
//	0x9306d7cdL, 0x2957de54L, 0xbf67d923L, 0x2e7a66b3L, 0xb84a61c4L,
//	0x021b685dL, 0x942b6f2aL, 0x37be0bb4L, 0xa18e0cc3L, 0x1bdf055aL,
//	0x8def022dL
//#endif
};

CRC32::CRC32()
{
	reset();
}

void CRC32::update(const uint8_t * s, unsigned n)
{
	uint32_t crc = m_crc;
    m_count += n;

    while (n--)
    {
        uint8_t c = *s++ & 0xff;
        crc = (crc << 8) ^ m_tab[(crc >> 24) ^ c];
    }

//	for(; !((reinterpret_cast<uint32_t>(s) & 0x3) == 0) && n > 0; n--)
//	{
//		crc = m_tab[CRC32_INDEX(crc) ^ *s++] ^ CRC32_SHIFTED(crc);
//	}
//
//	while (n >= 4)
//	{
//		crc ^= *(const uint32_t *)s;
//		crc = m_tab[CRC32_INDEX(crc)] ^ CRC32_SHIFTED(crc);
//		crc = m_tab[CRC32_INDEX(crc)] ^ CRC32_SHIFTED(crc);
//		crc = m_tab[CRC32_INDEX(crc)] ^ CRC32_SHIFTED(crc);
//		crc = m_tab[CRC32_INDEX(crc)] ^ CRC32_SHIFTED(crc);
//		n -= 4;
//		s += 4;
//	}
//
//	while (n--)
//	{
//		crc = m_tab[CRC32_INDEX(crc) ^ *s++] ^ CRC32_SHIFTED(crc);
//	}

	m_crc = crc;
}

void CRC32::truncatedFinal(uint8_t * hash, unsigned size)
{
    // pad with zeroes
    if (m_count % 4)
    {
        unsigned i;
        for (i = m_count % 4; i < 4; i++) {
            m_crc = (m_crc << 8) ^ m_tab[(m_crc >> 24) ^ 0];
        }
    }

//	m_crc ^= CRC32_NEGL;

	unsigned i;
	for (i=0; i<size; i++)
	{
		hash[i] = getCrcByte(i);
	}

	reset();
}