Function length3

NULLC/includes/math.cpp:156–159

	}

	float length3(float4* v)
	{
		return sqrt(v->x * v->x + v->y * v->y + v->z * v->z);
	}
	float normalize3(float4* v)
	{
		float len = length3(v), invLen = 1.0f / len;