#pragma once

class COMPARE_DOUBLE
{
public :
	static bool up_zero(const double &v, const  double &tol = .01) { return v > tol; }

	static bool upequal_zero(const double &v, const  double &tol = .01) { return v >= -tol; }

	static bool down_zero(const double &v, const  double &tol = .01) { return v < -tol; }

	static bool downequal_zero(const double &v, const  double &tol = .01) { return v <= tol; }

	static bool equal_zero(const double &v, const  double &tol = .01) { return v >= -tol && v <= tol; }

	static bool equal(const double &a, const double &b, const  double &tol = .01) { return equal_zero(a - b, tol); }

	static bool downequal(const double &a, const double &b, const  double &tol = .01) { return downequal_zero(a - b, tol); }

	static bool upequal(const double &a, const double &b, const  double &tol = .01) { return upequal_zero(a - b, tol); }

};