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19 lines
490 B
Python
19 lines
490 B
Python
#!/usr/bin/python
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''' This method merges set bit and clean bit:
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1) first clear the bit at i using a mask such as 1110111
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2) then shift the intended value v by i bits
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3) this will create a number with bit i to v and all other to 0
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4) finally update the ith bit with or
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'''
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def update_bit(num, i, v):
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mask = ~ (1 << i)
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return bin( (num & mask) | (v << i) )
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if __name__ == '__main__':
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num = int('10010000', 2)
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print update_bit(num, 2, 1) # '0b10010100' |