Return a the machine bype order: big-endian or little-endian
Big-endian:
32bit Integer: +----+----+----+----+ | 0A | 0B | 0C | 0D | +----+----+----+----+ Memory: a-1 ... a | 0A | a+1 | 0B | a+2 | 0C | a+3 | 0D | a+4 ...
Little-endian:
32bit Integer: +----+----+----+----+ | 0A | 0B | 0C | 0D | +----+----+----+----+ Memory: a-1 ... a | 0D | a+1 | 0C | a+2 | 0B | a+3 | 0A | a+4 ...