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- /* Hey EMACS -*- linux-c -*- */
- /* $Id: macros.h 2450 2006-06-07 20:03:00Z roms $ */
- /* libtifiles - Ti File Format library, a part of the TiLP project
- * Copyright (C) 1999-2006 Romain Liévin
- *
- * 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.
- */
- #ifndef __TIEMU_MACROS__
- #define __TIEMU_MACROS__
- #include <stdint.h>
- // extract a word from a longword
- # define LSW(l) (uint16_t) ((l) & 0x0000FFFF)
- # define MSW(l) (uint16_t)(((l) & 0xFFFF0000) >> 16)
- // extract a byte from a word
- # define LSB(w) (uint8_t) ((w) & 0x00FF)
- # define MSB(w) (uint8_t)(((w) & 0xFF00) >> 8)
- // extract a nibble from a byte
- # define LSN(b) ((b) & 0x0F)
- # define MSN(b) (((b) & 0xF0) >> 4)
- // convert 2 nibbles into a BCD byte
- # define BCD(b) (10*MSN(b)+LSN(b))
- #endif
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