/* * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc. * Copyright (C) 2017 Furrtek * * This file is part of PortaPack. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; see the file COPYING. If not, write to * the Free Software Foundation, Inc., 51 Franklin Street, * Boston, MA 02110-1301, USA. */ #include <string> #ifndef __DE_BRUIJN_H__ #define __DE_BRUIJN_H__ // n from 3 to 16 const uint32_t de_bruijn_polys[14] { 0b0000000000000101, 0b0000000000001001, 0b0000000000011011, 0b0000000000110011, 0b0000000001010011, 0b0000000010001101, 0b0000000100100001, 0b0000001000100001, 0b0000010001100001, 0b0000110101000011, 0b0001001001100101, 0b0010101100000011, 0b0101000000001001, 0b1010000101000101 }; struct de_bruijn { public: size_t init(const uint32_t n); uint32_t compute(const uint32_t steps); private: uint32_t length { }; uint32_t poly { }; uint32_t shift_register { }; }; #endif/*__DE_BRUIJN_H__*/