Function main

bit_manipulation/bits.py:126–209

()

def main():
    for x in range(0, 20):
        print(x, bin(x), hex(x))

    print("Hamming distance: 1010111100 and 1001010101: ", hamming_distance(0b1010111100, 0b1001010101))

    print("Bit 0: 1011 1100 set?", is_bit_set(0b10111100, 0))
    print("Bit 1: 1011 1100 set?", is_bit_set(0b10111100, 1))
    print("Bit 2: 1011 1100 set?", is_bit_set(0b10111100, 2))
    print("Bit 3: 1011 1100 set?", is_bit_set(0b10111100, 3))
    print("Bit 4: 1011 1100 set?", is_bit_set(0b10111100, 4))
    print("Bit 5: 1011 1100 set?", is_bit_set(0b10111100, 5))
    print("Bit 6: 1011 1100 set?", is_bit_set(0b10111100, 6))
    print("Bit 7: 1011 1100 set?", is_bit_set(0b10111100, 7))

    print("Hamming weight: 1010111100:", hamming_weight(0b1010111100))
    print("Hamming weight: 1001000001:", hamming_weight(0b1001000001))
    print("Hamming weight: 0001000000:", hamming_weight(0b0001000000))
    print("Hamming weight: 0000000000:", hamming_weight(0b0000000000))
    print("Hamming weight: 11111111:", hamming_weight(0b11111111))

    print("PopCount: " + str(bin(1231424)) + ":", pop_count(1231424))
    print("PopCount: " + str(bin(123)) + ":", pop_count(123))
    print("PopCount: " + str(bin(8568)) + ":", pop_count(8568))
    print("PopCount: " + str(bin(1)) + ":", pop_count(1))
    print("PopCount: " + str(bin(-1)) + ":", pop_count(-1))
    print("PopCount: " + str(bin(4)) + ":", pop_count(4))
    print("PopCount: " + str(bin(903523125)) + ":", pop_count(903523125))

    for x in range(0, 5):
        print(str(x) + " is even?", is_even(x))

    for x in range(0, 17):
        print(str(x) + " is power of 2?", is_power_of_2(x))

    print("Get 3 bits starting at position 5 in 1010111100", bin(get_bits(0b1010111100, 5, 3)))
    print("Get 3 bits starting at position 8 in 1010111100", bin(get_bits(0b1010111100, 9, 3)))

    print("Set bit 4 to 0: 01010010", bin(clear_bit(0b01010010, 4)))
    print("Set bit 0 to 1: 01010010", bin(set_bit(0b01010010, 0)))
    print("Toggle bit 1: 01010010", bin(toggle_bit(0b01010010, 1)))
    print("Toggle bit 3: 01010010", bin(toggle_bit(0b01010010, 3)))

    print("Rotate left 5 positions: 01001000100101011001010010011011:",
          bin(rotate_left(0b01001000100101011001010010011011, 5)))

    print("3 + 5 = ", add(3, 5))
    print("33 + 51 = ", add(33, 51))
    print("40 + 90 = ", add(40, 90))
    print("45 + 15 = ", add(45, 15))

    print("Sign of 45", get_sign(45))
    print("Sign of 0", get_sign(0))
    print("Sign of -1", get_sign(-1))
    print("Sign of -23", get_sign(-23))

    for x in range(0, 12):
        print("has parity: " + str(x), has_parity(x), bin(x))