Math.Log2(Double) Method

Reference

Definition

Namespace:: System

Assembly:: System.Runtime.dll

Assembly:: System.Runtime.Extensions.dll

Source:: Math.cs

Source:: Math.cs

Source:: Math.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Returns the base 2 logarithm of a specified number.

public:
 static double Log2(double x);

public static double Log2 (double x);

static member Log2 : double -> double

Public Shared Function Log2 (x As Double) As Double

Parameters

x: Double

A number whose logarithm is to be found.

Returns

Double

One of the values in the following table.

`x` parameter	Return value
Positive	The base 2 log of `x`; that is, log 2`x`.
Zero	NegativeInfinity
Negative	NaN
Equal to NaN	NaN
Equal to PositiveInfinity	PositiveInfinity

Remarks

Parameter x is specified as a base 10 number.

This method calls into the underlying C runtime, and the exact result or valid input range may differ between different operating systems or architectures.

Applies to

Zdieľať cez