convert.h

非常好用的gps数据读写接口

/***************************************************************************
                     convert.h  -  converting functions
                             -------------------
    begin                : So M鋜 21 17:50:31 CET 2004
    copyright            : (C) 2004 by Dennis Real
    email                : [e-mail]
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef CONVERT_H
#define CONVERT_H

#include "def.h"

/* convert first 4 bytes to float, lsb comes first */ 
float char2float(BYTE *ch);

/* convert first 4 bytes to long, lsb comes first */ 
long char2long(BYTE *ch);

/* convert first 4 bytes to long	*/ 
double char2double(BYTE *ch);

/* convert first 16 bytes to Radian_Type	*/
Radian_Type char2radiantype(BYTE *ch);

/*  convert degrees to radian */
double deg2rad(double deg);

/*  convert radian to degrees */
double rad2deg(double rad);

/*	convert velocity north&east to direction in rad	*/
double directionrad(double vn, double ve);

#endif