Bitshifting bytes to form a long var fails!

Projects Programming
30

I was thinking about an approach that fits the following:

  1. hardware / software (well, that doesn't exclude much);
  2. 2 instructions (actually can be done in 1, depending on how you code it), in C.
  3. does not rely on a hardware multiplier;

Whether it is obscure or not is subjective so I would stay away from that.