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# Math.Pow Method

Visual Studio 2008

Updated: August 2009

Returns a specified number raised to the specified power.

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

## Syntax

```'Declaration
Public Shared Function Pow ( _
x As Double, _
y As Double _
) As Double
'Usage
Dim x As Double
Dim y As Double
Dim returnValue As Double

returnValue = Math.Pow(x, y)
```

#### Parameters

x
Type: System.Double

A double-precision floating-point number to be raised to a power.

y
Type: System.Double

A double-precision floating-point number that specifies a power.

#### Return Value

Type: System.Double
The number x raised to the power y.

## Remarks

The following table indicates the return value when various values or ranges of values are specified for the x and y parameters. For more information, see Double.PositiveInfinity, Double.NegativeInfinity, and Double.NaN.

Parameters

Return value

x or y = NaN.

NaN

x = Any value except NaN; y = 0.

1

x = NegativeInfinity; y < 0.

0

x = NegativeInfinity; y is a positive odd integer.

NegativeInfinity

x = NegativeInfinity; y is positive but not an odd integer.

PositiveInfinity

x < 0 but not NegativeInfinity; y is not an integer, NegativeInfinity, or PositiveInfinity.

NaN

x = -1; y = NegativeInfinity or PositiveInfinity.

NaN

-1 < x < 1; y = NegativeInfinity.

PositiveInfinity

-1 < x < 1; y = PositiveInfinity.

0

x < -1 or x > 1; y = NegativeInfinity.

0

x < -1 or x > 1; y = PositiveInfinity.

PositiveInfinity

x = 0; y < 0.

PositiveInfinity

x = 0; y > 0.

0

x = 1; y is any value except NaN.

1

x = PositiveInfinity; y < 0.

0

x = PositiveInfinity; y > 0.

PositiveInfinity

## Examples

The following example uses the Pow method to calculate the value that results from raising 2 to a power ranging from 0 to 32.

```Public Module Example
Public Sub Main
Dim value As Integer = 2
For power As Integer = 0 To 32
Console.WriteLine("{0}^{1} = {2:N0} (0x{2:X})", _
value, power, CLng(Math.Pow(value, power)))
Next
End Sub
End Module
' The example displays the following output:
'       2^0 = 1 (0x1)
'       2^1 = 2 (0x2)
'       2^2 = 4 (0x4)
'       2^3 = 8 (0x8)
'       2^4 = 16 (0x10)
'       2^5 = 32 (0x20)
'       2^6 = 64 (0x40)
'       2^7 = 128 (0x80)
'       2^8 = 256 (0x100)
'       2^9 = 512 (0x200)
'       2^10 = 1,024 (0x400)
'       2^11 = 2,048 (0x800)
'       2^12 = 4,096 (0x1000)
'       2^13 = 8,192 (0x2000)
'       2^14 = 16,384 (0x4000)
'       2^15 = 32,768 (0x8000)
'       2^16 = 65,536 (0x10000)
'       2^17 = 131,072 (0x20000)
'       2^18 = 262,144 (0x40000)
'       2^19 = 524,288 (0x80000)
'       2^20 = 1,048,576 (0x100000)
'       2^21 = 2,097,152 (0x200000)
'       2^22 = 4,194,304 (0x400000)
'       2^23 = 8,388,608 (0x800000)
'       2^24 = 16,777,216 (0x1000000)
'       2^25 = 33,554,432 (0x2000000)
'       2^26 = 67,108,864 (0x4000000)
'       2^27 = 134,217,728 (0x8000000)
'       2^28 = 268,435,456 (0x10000000)
'       2^29 = 536,870,912 (0x20000000)
'       2^30 = 1,073,741,824 (0x40000000)
'       2^31 = 2,147,483,648 (0x80000000)
'       2^32 = 4,294,967,296 (0x100000000)
```

## Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

## Version Information

#### .NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

#### .NET Compact Framework

Supported in: 3.5, 2.0, 1.0

#### XNA Framework

Supported in: 3.0, 2.0, 1.0

## Change History

Date

History

Reason

August 2009

Replaced the example.

Customer feedback.

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