Log Method

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Returns the natural (base e) logarithm of a specified number.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public static double Log(
	double d
)

Parameters

d
Type: System..::..Double
The number whose logarithm is to be found.

Return Value

Type: System..::..Double
One of the values in the following table.

d parameter

Return value

Positive

The natural logarithm of d; that is, ln d, or log e d

Zero

NegativeInfinity

Negative

NaN

Equal to NaN

NaN

Equal to PositiveInfinity

PositiveInfinity

Parameter d is specified as a base 10 number.

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