Adds a Vec3d to a Vec3f.
Adds a Vec3f to a Vec3f.
Adds a Vec3i to a Vec3f.
Adds a Vector3d to a Vec3f.
Adds a Vec3d to a Vector3d.
Adds a Vec3f to a Vector3d.
Adds a Vec3i to a Vector3d.
Adds a Vector3d to a Vector3d.
Adds a Vector4f to a Vector4f.