1Test #1  mask == 0, value == ~0  --> cc == 0
2OK
3Test #2  mask == 0xFFF, value == 0  --> cc == 0
4OK
5Test #3  mask == 0xFFFF, value == 0xFFFF  --> cc == 3
6OK
7Test #4  mask == 0x8000, value == 0x8000  --> cc == 3
8OK
9Test #5  mask == 0xF000, value == 0x9000  --> cc == 2
10OK
11Test #6  mask == 0xF000, value == 0x3000  --> cc == 1
12OK
13