How to vectorize a distance calculation using SSE2

Question

A and B are vectors or length N, where N could be in the range 20 to 200 say. I want to calculate the square of the distance between these vectors, i.e. d^2 = ||A-B||^2.

Answer 1

From the MSDN documentation, the 1105 error code means the compiler is not able to figure out how to reduce the code to vectorized instructions. For floating point operations it is indicated that you need to specify the /fp:fast option to enable any floating point reductions at all.