1 sizeof (int8_t) = 1
   2 sizeof (int16_t) = 2
   3 sizeof (int32_t) = 4
   4 sizeof (int64_t) = 8
   5 sizeof (uint8_t) = 1
   6 sizeof (uint16_t) = 2
   7 sizeof (uint32_t) = 4
   8 sizeof (uint64_t) = 8
   9 sizeof (intptr_t) = 8
  10 sizeof (uintptr_t) = 8
  11 sizeof (uchar_t) = 1
  12 sizeof (ushort_t) = 2
  13 sizeof (uint_t) = 4
  14 sizeof (ulong_t) = 8
  15 sizeof (u_longlong_t) = 8
  16 sizeof (ptrdiff_t) = 8
  17 sizeof (signed) = 4
  18 sizeof (unsigned) = 4
  19 sizeof (void) = 0
  20 sizeof (char) = 1
  21 sizeof (short) = 2
  22 sizeof (int) = 4
  23 sizeof (long) = 8
  24 sizeof (_Bool) = 1
  25 sizeof (float) = 4
  26 sizeof (double) = 8