What are the challenges in this question?

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    Would someone care to explain the challenges in this question? Particularly the corner cases. Power of 0 gives a 1 is straight forward.

    It is straight forward as well (or I think so anyway) to divide the power and keep multiplying till we reach the answer multiplying with x, whilst keeping the extra odd number in mind.

    I am more interested in the overflows and the case where n < 0 or where we divide 1.0 / x .

    Thank you.

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