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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _reldiff(a, b):
 """ Computes the relative difference of two floating-point numbers rel = abs(a-b)/min(abs(a), abs(b)) If a == 0 and b == 0, then 0.0 is returned Otherwise if a or b is 0.0, inf is returned. """


    a = float(a)
    b = float(b)
    aa = abs(a)
    ba = abs(b)

    if a == 0.0 and b == 0.0:
        return 0.0
    elif a == 0 or b == 0.0:
        return float('inf')

    return abs(a - b) / min(aa, ba)