ASSERT(LOG2CEIL(0) == 0,      "LOG2CEIL(0) == 0");
ASSERT(LOG2CEIL(1) == 0,      "LOG2CEIL(1) == 0");
ASSERT(LOG2CEIL(2) == 1,      "LOG2CEIL(2) == 1");
ASSERT(LOG2CEIL(3) == 2,      "LOG2CEIL(3) == 2");
ASSERT(LOG2CEIL(4) == 2,      "LOG2CEIL(4) == 2");
ASSERT(LOG2CEIL(0x0ff) == 8,  "LOG2CEIL(0x0ff) == 8");
ASSERT(LOG2CEIL(0x100) == 8,  "LOG2CEIL(0x100) == 8");
ASSERT(LOG2CEIL(0x1ff) == 9,  "LOG2CEIL(0x1ff) == 9");