dot/cross built-in functions

I cannot find the float3/4 dot/cross built-in functions… do I need to implement them manually? Could be included if they aren’t, please? ( I think they are useful! )

See the FAQ, Q24:
http://forums.nvidia.com/index.php?showtopic=36286

The dxtc sample in the SDK includes a file “CuMath.h” that defines a lot of the standard vector functions.