How to compute power of negative numbers

how to compute power of negative number like 10^-1 or 10^-3

Negative powers pretty much always give fractional results, which means you must use floats. For floats, there is powf and powi. Note that a^(-b) = 1 / a^b.



Just a side note on terminology:

Doesn't the title suggest that a < 0 in a ^ b?

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