//***************************************************************
//**
//**   Declarations for routines proved by Steve McNeill
//**   Email: smcneill@swva.net 
//**
//****************************************************************

//Angle Conversion Formulas
extern double func_deg2rad(double degree);
extern double func_deg2grad(double degree);
extern double func_rad2deg(double degree);
extern double func_rad2grad(double degree);
extern double func_grad2deg(double degree);
extern double func_grad2rad(double degree);
extern double func_pi();
extern int32 func_screenwidth();
extern int32 func_screenheight();
int32 func_windowexists ();