call to abs(int) instead of abs(float) on given config. due to use of include...

call to abs(int) instead of abs(float) on given config. due to use of include math.h instead of <cmath>

include/Geometry/plane_3d.hpp

@@ -117,7 +117,7 @@ void Plane3D<T>::project(Vector<3,T>& p) const
 {
 #define PRECISION 1e-10
 	T d = -distance(p) ;
-	if(abs(d) > PRECISION)
+	if(std::abs(d) > PRECISION)
 	{
 		Vector<3,T> v = m_normal * d ;
 		p += v ;