removed automatic epsilon checks

Author: Chillee

content/geometry/Point.h

@@ -9,8 +9,7 @@
  */
 #pragma once
 
-const double EPS=1e-8;
-template <typename T> int sgn(T x) { return x < -EPS ? -1 : x > EPS; }
+template <typename T> int sgn(T x) { return (x>0) - (x<0);}
 template<class T>
 struct Point {
 	typedef Point P;

content/geometry/onSegment.h

@@ -11,6 +11,6 @@
 #include "Point.h"
 
 template <class P> bool onSegment(P s, P e, P p) {
-	return sgn(s.cross(e, p)) == 0 &&
-			sgn((s - p).dot(e - p)) <= 0;
+	return s.cross(e, p) == 0 &&
+			(s - p).dot(e - p) <= 0;
 }