126.96.36.199 BlockAlign -- Macro to Round a Value Up to the Next Nearest Multiple of Another Value
The inputs for this algorithm are:
Value: The value being rounded up.
Boundary - Value is to be rounded up to a multiple of this value. Boundary MUST be a power of 2.
This algorithm returns the bitwise AND of (Value + (Boundary - 1)) with the 2's complement of Boundary.
Pseudocode for the algorithm is as follows:
BlockAlign(Value, Boundary) = (Value + (Boundary - 1)) & -(Boundary)