print(0 & (1 << 80)) print(0 & (1 << 80) == 0) print(bool(0 & (1 << 80))) a = 0xfffffffffffffffffffffffffffff print(a & (1 << 80)) print((a & (1 << 80)) >> 80) print((a & (1 << 80)) >> 80 == 1) # test negative on rhs a = 123456789012345678901234567890 print(a & -1) print(a & -2) print(a & -2345678901234567890123456789) print(a & (-a)) print(a & (-a - 1)) print(a & (-a + 1)) # test negative on lhs a = 123456789012345678901234567890 print(-1 & a) print(-2 & a) print(-2345678901234567890123456789 & a) print((-a) & a) print((-a) & 0xffffffff) print((-a) & 0xffffffffffffffffffffffffffffffff)