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def BintoInt(x):
i = int(x, base=2)
if x[0] == '1':
i = i - 2**len(x)
return i
def BintoUInt(x):
return int(x, base=2)
def UInttoBin(x, n):
return '0' * (n - len(bin(x)[2:])) + bin(x)[2:]
def InttoBin(x, n):
if x < 0:
x += 2**n
return UInttoBin(x, n)