#ifndef ucoolib_ucoolib_utils_bytes_hh #define ucoolib_ucoolib_utils_bytes_hh // ucoolib - Microcontroller object oriented library. {{{ // // Copyright (C) 2013 Nicolas Schodet // // APBTeam: // Web: http://apbteam.org/ // Email: team AT apbteam DOT org // // 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 of the License, 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; if not, write to the Free Software // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. // // }}} namespace ucoo { /// Pack two bytes to one 16 bit word. static inline uint16_t bytes_pack (uint8_t b1, uint8_t b0) { return b1 << 8 | b0; } /// Pack four bytes to one 32 bit word. static inline uint32_t bytes_pack (uint8_t b3, uint8_t b2, uint8_t b1, uint8_t b0) { return b3 << 24 | b2 << 16 | b1 << 8 | b0; } /// Unpack one byte from one 32 bit word. static inline uint8_t bytes_unpack (uint32_t w, int n) { return (w >> (n * 8)) & 0xff; } } // namespace ucoo #endif // ucoolib_ucoolib_utils_bytes_hh