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Math.Pow Method

Visual Studio 2010

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
```

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)

```

Version Information

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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