Module 

Header 
/Engine/Source/Runtime/Core/Public/Math/Vector.h 
Include 
#include "Math/Vector.h" 
FVector GetSignVector() const
Get a copy of the vector as sign only. Each component is set to +1 or 1, with the sign of zero treated as +1.
Parameter 
Description 

A 
copy of the vector with each component set to +1 or 1 