cl-tools/src/bitutils.py

def align_binary_to_right(value, size):
    if "b" in value:
        result = value.split("b")[1]
    else:
        result = str(value)

    return result[-size:].rjust(size, "0")

ar = align_binary_to_right

def align_binary_to_left(value, size):
    if "b" in value:
        result = value.split("b")[1]
    else:
        result = str(value)

    return result[-size:].ljust(size, "0")

al = align_binary_to_left


def shift_left(rg, fill_bit = 0):
    return rg[1:] + str(fill_bit)

l = shift_left


def shift_right(rg, fill_bit = 0):
    return str(fill_bit) + rg[:-1]

r = shift_right


def sum_supplementary_codes(x, y, size):
    return al(bin(int("0b"+x, 2) + int("0b"+y, 2))[2:], size)

sum = sum_supplementary_codes


def sum_supplementary_codes_right_align(x, y, size):
    return ar(bin(int("0b"+x, 2) + int("0b"+y, 2))[2:], size)

rsum = sum_supplementary_codes_right_align


def sum_supplementary_codes_with_overflow(x, y, size):
    result = bin(int("0b"+x, 2) + int("0b"+y, 2))[2:]
    if len(result) > size:
        return al(result, size), '1'
    else:
        return al(result, size), '0'

sump = sum_supplementary_codes_with_overflow


def invert_bit(b):
    if b == '0':
        return '1'
    elif b == '1':
        return '0'
    else:
        print(f"binutils: detected impossible call: inv({b})")
        exit(1)

inv = invert_bit


def xor(x, y):
    if len(x) == len(y):
        result = ''
        for i in zip(x, y):
            if x != y:
                result += '1'
            else:
                result += '0'

    return result