avrfix_config.h

AVR单片机定点计算函数说明及C源码。包括定点求解平方根和对数。还打包了一个外国网站上的Fixed Point Library。定将给开发工作带来极大的方便。

/****************************************************************
 *                                                              *
 *          __ ____  _________                                  *
 *         /_ \\\  \/   /|    \______                           *
 *        //   \\\     /|| D  /_    /.                          *
 *       //     \\\_  /.||    \ ___/.                           *
 *      /___/\___\\__/. |__|\__\__.___  ___                     *
 *       ....  .......   ...||  _/_\  \////.                    *
 *                          || |.| |\  ///.                     *
 *                          |__|.|_|///  \                      *
 *                           .... ./__/\__\                     *
 *                                  ........                    *
 * Fixed Point Library                                          *
 * according to                                                 *
 * ISO/IEC DTR 18037                                            *
 *                                                              *
 * Version 1.0.1                                                *
 * Maximilan Rosenblattl, Andreas Wolf 2007-02-07               *
 ****************************************************************/

#ifndef _AVRFIX_CONFIG_H
#define _AVRFIX_CONFIG_H

#define AVR_CONFIG 0

#define BIG_ENDIAN 0
#define LITTLE_ENDIAN 1

#ifndef AVRFIX_CONFIG
#define AVRFIX_CONFIG AVR_CONFIG
#endif

#if AVRFIX_CONFIG == AVR_CONFIG
#define BYTE_ORDER BIG_ENDIAN
#define LSHIFT_static(x, b) ((b) == 1 ? (x) + (x) : ((b) < 8 ? ((x) << (b)) : (x) * (1UL << (b))))
#define RSHIFT_static(x, b) ((x) >> (b))
#define LSHIFT_dynamic(x, b) ((x) << (b))
#define RSHIFT_dynamic(x, b) ((x) >> (b))
#endif

#endif /* _AVRFIX_CONFIG_H */