bitset<30> bs1: capacity() = 32, sizeof() = 4
000000000000000000000000000000
111111111111111111111110111111
000000000000000000000001000000
111111111111111111111110111111
011010011001011001011000100100
count = 13
000000000000000000000000000000
any = false, none = true, count = 0
111111111111111111111111111111
any = true, none = false, count = 32
000000000000000000000110010000
test(7) == true, [9] = false, [8] = true
any = true, none = false, count = 3
~bs1 == 111111111111111111111001101111
to_value == 0x190
bitset<70> bs2: capacity() = 96, sizeof() = 12
0000000000000000000000000000000000000000000000000000000000000000101101
bs2.set(34,40,13)
0000000000000000000000000000000011010000000000000000000000000000101101
bs2.at(34,40) = 13
bitset<256> bs3: capacity() = 256, sizeof() = 32
bs3.to_value() == 0x3030
bs4 == bs1
bs4 = 0x50505050: 010000010100000101000001010000
bs1 = 0x30303030: 110000001100000011000000110000
bs4 &= bs1; bs4 = 010000000100000001000000010000
bs4 & bs1;  bs4 = 010000000100000001000000010000
bs4 |= bs1; bs4 = 110000011100000111000001110000
bs4 | bs1;  bs4 = 110000011100000111000001110000
bs4 ^= bs1; bs4 = 100000011000000110000001100000
bs4 ^ bs1;  bs4 = 100000011000000110000001100000
stream[4];  bs4 = 100000011000000110000001100000