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35 lines
850 B
Python
35 lines
850 B
Python
def get_highest_set_bit_position(number: int) -> int:
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"""
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Returns position of the highest set bit of a number.
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Ref - https://graphics.stanford.edu/~seander/bithacks.html#IntegerLogObvious
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>>> get_highest_set_bit_position(25)
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5
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>>> get_highest_set_bit_position(37)
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6
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>>> get_highest_set_bit_position(1)
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1
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>>> get_highest_set_bit_position(4)
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3
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>>> get_highest_set_bit_position(0)
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0
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>>> get_highest_set_bit_position(0.8)
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Traceback (most recent call last):
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...
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TypeError: Input value must be an 'int' type
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"""
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if not isinstance(number, int):
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raise TypeError("Input value must be an 'int' type")
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position = 0
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while number:
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position += 1
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number >>= 1
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return position
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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