 However, math libraries have typically returned 1 for for any real number "y", and even when "y" is an infinity.Similarly, they produce 1 for even when "x" is 0 or an infinity.The rationale for returning the value 1 for the indeterminate forms was that the value of functions at singular points can be taken as a particular value if that value is in the limit the value for all but a vanishingly small part of a ball around the limit value of the parameters.