/*
 *  Copyright (c) 2016-2018 Positive Technologies, https://www.ptsecurity.com,
 *  Fast Positive Hash.
 *
 *  Portions Copyright (c) 2010-2018 Leonid Yuriev <leo@yuriev.ru>,
 *  The 1Hippeus project (t1h).
 *
 *  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 acknowledgement 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.
 */

/*
 * t1ha = { Fast Positive Hash, aka "Позитивный Хэш" }
 * by [Positive Technologies](https://www.ptsecurity.ru)
 *
 * Briefly, it is a 64-bit Hash Function:
 *  1. Created for 64-bit little-endian platforms, in predominantly for x86_64,
 *     but portable and without penalties it can run on any 64-bit CPU.
 *  2. In most cases up to 15% faster than City64, xxHash, mum-hash, metro-hash
 *     and all others portable hash-functions (which do not use specific
 *     hardware tricks).
 *  3. Not suitable for cryptography.
 *
 * The Future will Positive. Всё будет хорошо.
 *
 * ACKNOWLEDGEMENT:
 * The t1ha was originally developed by Leonid Yuriev (Леонид Юрьев)
 * for The 1Hippeus project - zerocopy messaging in the spirit of Sparta!
 */


#include "t1ha_bits.h"
#include "t1ha_selfcheck.h"

/* *INDENT-OFF* */
/* clang-format off */

const uint64_t t1ha_refval_2atonce[81] = { 0,
  0x772C7311BE32FF42, 0x444753D23F207E03, 0x71F6DF5DA3B4F532, 0x555859635365F660,
  0xE98808F1CD39C626, 0x2EB18FAF2163BB09, 0x7B9DD892C8019C87, 0xE2B1431C4DA4D15A,
  0x1984E718A5477F70, 0x08DD17B266484F79, 0x4C83A05D766AD550, 0x92DCEBB131D1907D,
  0xD67BC6FC881B8549, 0xF6A9886555FBF66B, 0x6E31616D7F33E25E, 0x36E31B7426E3049D,
  0x4F8E4FAF46A13F5F, 0x03EB0CB3253F819F, 0x636A7769905770D2, 0x3ADF3781D16D1148,
  0x92D19CB1818BC9C2, 0x283E68F4D459C533, 0xFA83A8A88DECAA04, 0x8C6F00368EAC538C,
  0x7B66B0CF3797B322, 0x5131E122FDABA3FF, 0x6E59FF515C08C7A9, 0xBA2C5269B2C377B0,
  0xA9D24FD368FE8A2B, 0x22DB13D32E33E891, 0x7B97DFC804B876E5, 0xC598BDFCD0E834F9,
  0xB256163D3687F5A7, 0x66D7A73C6AEF50B3, 0x25A7201C85D9E2A3, 0x911573EDA15299AA,
  0x5C0062B669E18E4C, 0x17734ADE08D54E28, 0xFFF036E33883F43B, 0xFE0756E7777DF11E,
  0x37972472D023F129, 0x6CFCE201B55C7F57, 0xE019D1D89F02B3E1, 0xAE5CC580FA1BB7E6,
  0x295695FB7E59FC3A, 0x76B6C820A40DD35E, 0xB1680A1768462B17, 0x2FB6AF279137DADA,
  0x28FB6B4366C78535, 0xEC278E53924541B1, 0x164F8AAB8A2A28B5, 0xB6C330AEAC4578AD,
  0x7F6F371070085084, 0x94DEAD60C0F448D3, 0x99737AC232C559EF, 0x6F54A6F9CA8EDD57,
  0x979B01E926BFCE0C, 0xF7D20BC85439C5B4, 0x64EDB27CD8087C12, 0x11488DE5F79C0BE2,
  0x25541DDD1680B5A4, 0x8B633D33BE9D1973, 0x404A3113ACF7F6C6, 0xC59DBDEF8550CD56,
  0x039D23C68F4F992C, 0x5BBB48E4BDD6FD86, 0x41E312248780DF5A, 0xD34791CE75D4E94F,
  0xED523E5D04DCDCFF, 0x7A6BCE0B6182D879, 0x21FB37483CAC28D8, 0x19A1B66E8DA878AD,
  0x6F804C5295B09ABE, 0x2A4BE5014115BA81, 0xA678ECC5FC924BE0, 0x50F7A54A99A36F59,
  0x0FD7E63A39A66452, 0x5AB1B213DD29C4E4, 0xF3ED80D9DF6534C5, 0xC736B12EF90615FD
};

const uint64_t t1ha_refval_2atonce128[81] = { 0x4EC7F6A48E33B00A,
  0xB7B7FAA5BD7D8C1E, 0x3269533F66534A76, 0x6C3EC6B687923BFC, 0xC096F5E7EFA471A9,
  0x79D8AFB550CEA471, 0xCEE0507A20FD5119, 0xFB04CFFC14A9F4BF, 0xBD4406E923807AF2,
  0x375C02FF11010491, 0xA6EA4C2A59E173FF, 0xE0A606F0002CADDF, 0xE13BEAE6EBC07897,
  0xF069C2463E48EA10, 0x75BEE1A97089B5FA, 0x378F22F8DE0B8085, 0x9C726FC4D53D0D8B,
  0x71F6130A2D08F788, 0x7A9B20433FF6CF69, 0xFF49B7CD59BF6D61, 0xCCAAEE0D1CA9C6B3,
  0xC77889D86039D2AD, 0x7B378B5BEA9B0475, 0x6520BFA79D59AD66, 0x2441490CB8A37267,
  0xA715A66B7D5CF473, 0x9AE892C88334FD67, 0xD2FFE9AEC1D2169A, 0x790B993F18B18CBB,
  0xA0D02FBCF6A7B1AD, 0xA90833E6F151D0C1, 0x1AC7AFA37BD79BE0, 0xD5383628B2881A24,
  0xE5526F9D63F9F8F1, 0xC1F165A01A6D1F4D, 0x6CCEF8FF3FCFA3F2, 0x2030F18325E6DF48,
  0x289207230E3FB17A, 0x077B66F713A3C4B9, 0x9F39843CAF871754, 0x512FDA0F808ACCF3,
  0xF4D9801CD0CD1F14, 0x28A0C749ED323638, 0x94844CAFA671F01C, 0xD0E261876B8ACA51,
  0x8FC2A648A4792EA2, 0x8EF87282136AF5FE, 0x5FE6A54A9FBA6B40, 0xA3CC5B8FE6223D54,
  0xA8C3C0DD651BB01C, 0x625E9FDD534716F3, 0x1AB2604083C33AC5, 0xDE098853F8692F12,
  0x4B0813891BD87624, 0x4AB89C4553D182AD, 0x92C15AA2A3C27ADA, 0xFF2918D68191F5D9,
  0x06363174F641C325, 0x667112ADA74A2059, 0x4BD605D6B5E53D7D, 0xF2512C53663A14C8,
  0x21857BCB1852667C, 0xAFBEBD0369AEE228, 0x7049340E48FBFD6B, 0x50710E1924F46954,
  0x869A75E04A976A3F, 0x5A41ABBDD6373889, 0xA781778389B4B188, 0x21A3AFCED6C925B6,
  0x107226192EC10B42, 0x62A862E84EC2F9B1, 0x2B15E91659606DD7, 0x613934D1F9EC5A42,
  0x4DC3A96DC5361BAF, 0xC80BBA4CB5F12903, 0x3E3EDAE99A7D6987, 0x8F97B2D55941DCB0,
  0x4C9787364C3E4EC1, 0xEF0A2D07BEA90CA7, 0x5FABF32C70AEEAFB, 0x3356A5CFA8F23BF4
};

const uint64_t t1ha_refval_2stream[81] = { 0x3C8426E33CB41606,
  0xFD74BE70EE73E617, 0xF43DE3CDD8A20486, 0x882FBCB37E8EA3BB, 0x1AA2CDD34CAA3D4B,
  0xEE755B2BFAE07ED5, 0xD4E225250D92E213, 0xA09B49083205965B, 0xD47B21724EF9EC9E,
  0xAC888FC3858CEE11, 0x94F820D85736F244, 0x1707951CCA920932, 0x8E0E45603F7877F0,
  0x9FD2592C0E3A7212, 0x9A66370F3AE3D427, 0xD33382D2161DE2B7, 0x9A35BE079DA7115F,
  0x73457C7FF58B4EC3, 0xBE8610BD53D7CE98, 0x65506DFE5CCD5371, 0x286A321AF9D5D9FA,
  0xB81EF9A7EF3C536D, 0x2CFDB5E6825C6E86, 0xB2A58CBFDFDD303A, 0xD26094A42B950635,
  0xA34D666A5F02AD9A, 0x0151E013EBCC72E5, 0x9254A6EA7FCB6BB5, 0x10C9361B3869DC2B,
  0xD7EC55A060606276, 0xA2FF7F8BF8976FFD, 0xB5181BB6852DCC88, 0x0EE394BB6178BAFF,
  0x3A8B4B400D21B89C, 0xEC270461970960FD, 0x615967FAB053877E, 0xFA51BF1CFEB4714C,
  0x29FDA8383070F375, 0xC3B663061BC52EDA, 0x192BBAF1F1A57923, 0x6D193B52F93C53AF,
  0x7F6F5639FE87CA1E, 0x69F7F9140B32EDC8, 0xD0F2416FB24325B6, 0x62C0E37FEDD49FF3,
  0x57866A4B809D373D, 0x9848D24BD935E137, 0xDFC905B66734D50A, 0x9A938DD194A68529,
  0x8276C44DF0625228, 0xA4B35D00AD67C0AB, 0x3D9CB359842DB452, 0x4241BFA8C23B267F,
  0x650FA517BEF15952, 0x782DE2ABD8C7B1E1, 0x4EAE456166CA3E15, 0x40CDF3A02614E337,
  0xAD84092C46102172, 0x0C68479B03F9A167, 0x7E1BA046749E181C, 0x3F3AB41A697382C1,
  0xC5E5DD6586EBFDC4, 0xFF926CD4EB02555C, 0x035CFE67F89E709B, 0x89F06AB6464A1B9D,
  0x8EFF58F3F7DEA758, 0x8B54AC657902089F, 0xC6C4F1F9F8DA4D64, 0xBDB729048AAAC93A,
  0xEA76BA628F5E5CD6, 0x742159B728B8A979, 0x6D151CD3C720E53D, 0xE97FFF9368FCDC42,
  0xCA5B38314914FBDA, 0xDD92C91D8B858EAE, 0x66E5F07CF647CBF2, 0xD4CF9B42F4985AFB,
  0x72AE17AC7D92F6B7, 0xB8206B22AB0472E1, 0x385876B5CFD42479, 0x03294A249EBE6B26
};

const uint64_t t1ha_refval_2stream128[81] = { 0xCD2801D3B92237D6,
  0x10E4D47BD821546D, 0x9100704B9D65CD06, 0xD6951CB4016313EF, 0x24DB636F96F474DA,
  0x3F4AF7DF3C49E422, 0xBFF25B8AF143459B, 0xA157EC13538BE549, 0xD3F5F52C47DBD419,
  0x0EF3D7D735AF1575, 0x46B7B892823F7B1B, 0xEE22EA4655213289, 0x56AD76F02FE929BC,
  0x9CF6CD1AC886546E, 0xAF45CE47AEA0B933, 0x535F9DC09F3996B7, 0x1F0C3C01694AE128,
  0x18495069BE0766F7, 0x37E5FFB3D72A4CB1, 0x6D6C2E9299F30709, 0x4F39E693F50B41E3,
  0xB11FC4EF0658E116, 0x48BFAACB78E5079B, 0xE1B4C89C781B3AD0, 0x81D2F34888D333A1,
  0xF6D02270D2EA449C, 0xC884C3C2C3CE1503, 0x711AE16BA157A9B9, 0x1E6140C642558C9D,
  0x35AB3D238F5DC55B, 0x33F07B6AEF051177, 0xE57336776EEFA71C, 0x6D445F8318BA3752,
  0xD4F5F6631934C988, 0xD5E260085727C4A2, 0x5B54B41EC180B4FA, 0x7F5D75769C15A898,
  0xAE5A6DB850CA33C6, 0x038CCB8044663403, 0xDA16310133DC92B8, 0x6A2FFB7AB2B7CE2B,
  0xDC1832D9229BAE20, 0x8C62C479F5ABC9E4, 0x5EB7B617857C9CCB, 0xB79CF7D749A1E80D,
  0xDE7FAC3798324FD3, 0x8178911813685D06, 0x6A726CBD394D4410, 0x6CBE6B3280DA1113,
  0x6829BA4410CF1148, 0xFA7E417EB26C5BC6, 0x22ED87884D6E3A49, 0x15F1472D5115669D,
  0x2EA0B4C8BF69D318, 0xDFE87070AA545503, 0x6B4C14B5F7144AB9, 0xC1ED49C06126551A,
  0x351919FC425C3899, 0x7B569C0FA6F1BD3E, 0x713AC2350844CFFD, 0xE9367F9A638C2FF3,
  0x97F17D325AEA0786, 0xBCB907CC6CF75F91, 0x0CB7517DAF247719, 0xBE16093CC45BE8A9,
  0x786EEE97359AD6AB, 0xB7AFA4F326B97E78, 0x2694B67FE23E502E, 0x4CB492826E98E0B4,
  0x838D119F74A416C7, 0x70D6A91E4E5677FD, 0xF3E4027AD30000E6, 0x9BDF692795807F77,
  0x6A371F966E034A54, 0x8789CF41AE4D67EF, 0x02688755484D60AE, 0xD5834B3A4BF5CE42,
  0x9405FC61440DE25D, 0x35EB280A157979B6, 0x48D40D6A525297AC, 0x6A87DC185054BADA
};

/* *INDENT-ON* */
/* clang-format on */

__cold int t1ha_selfcheck__t1ha2_atonce(void) {
  return t1ha_selfcheck(t1ha2_atonce, t1ha_refval_2atonce);
}

__cold static uint64_t thunk_atonce128(const void *data, size_t len,
                                       uint64_t seed) {
  uint64_t unused;
  return t1ha2_atonce128(&unused, data, len, seed);
}

__cold int t1ha_selfcheck__t1ha2_atonce128(void) {
  return t1ha_selfcheck(thunk_atonce128, t1ha_refval_2atonce128);
}

__cold static uint64_t thunk_stream(const void *data, size_t len,
                                    uint64_t seed) {
  t1ha_context_t ctx;
  t1ha2_init(&ctx, seed, seed);
  t1ha2_update(&ctx, data, len);
  return t1ha2_final(&ctx, NULL);
}

__cold static uint64_t thunk_stream128(const void *data, size_t len,
                                       uint64_t seed) {
  uint64_t unused;
  t1ha_context_t ctx;
  t1ha2_init(&ctx, seed, seed);
  t1ha2_update(&ctx, data, len);
  return t1ha2_final(&ctx, &unused);
}

__cold int t1ha_selfcheck__t1ha2_stream(void) {
  return t1ha_selfcheck(thunk_stream, t1ha_refval_2stream) |
         t1ha_selfcheck(thunk_stream128, t1ha_refval_2stream128);
}

__cold int t1ha_selfcheck__t1ha2(void) {
  return t1ha_selfcheck__t1ha2_atonce() | t1ha_selfcheck__t1ha2_atonce128() |
         t1ha_selfcheck__t1ha2_stream();
}