Parameters

d

The number whose logarithm is to be found.

Returns

One of the values in the following table.

Positive	The natural logarithm of d; that is, ln d, or log d
Zero	double.NegativeInfinity
Negative	double.NaN
Equal to double.NaN	double.NaN
Equal to double.PositiveInfinity	double.PositiveInfinity

Remarks

Parameter d is specified as a base 10 number.

Requirements