#ifndef _MY_MATH_H_
#define _MY_MATH_H__
+
+#include <simgear/compiler.h>
+
#include <math.h>
-#include <fstream>
-#include <iomanip>
+#include STL_FSTREAM
+#include STL_IOMANIP
+
+FG_USING_NAMESPACE(std);
-using namespace std;
+#include <simgear/constants.h>
-#include <fg_constants.h>
extern const double PiOver180;
extern const double Pix4dif3;