#ifndef MMATH_H
#define MMATH_H
#include <math.h>

//高斯投影由经纬度(Unit:DD)反算大地坐标(含带号，Unit:Metres)
void GaussProjCal(double longitude, double latitude, double *X, double *Y);

//高斯投影由大地坐标(Unit:Metres)反算经纬度(Unit:DD)
void GaussProjInvCal(double X, double Y, double *longitude, double *latitude);
#endif // MMATH_H