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BigInteger.RightShift Operator

Shifts a BigInteger value a specified number of bits to the right.

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

public static BigInteger operator >>(
	BigInteger value,
	int shift
)

Parameters

value
Type: System.Numerics.BigInteger

The value whose bits are to be shifted.

shift
Type: System.Int32

The number of bits to shift value to the right.

Return Value

Type: System.Numerics.BigInteger
A value that has been shifted to the right by the specified number of bits.

The RightShift method defines the operation of the bitwise right-shift operator for BigInteger values. It enables code such as the following:

Languages that do not support custom operators can perform a bitwise right-shift operation by dividing value by BigInteger.Pow(2, shift) and subtracting 1 times shift for negative values. The following example shows that the results are identical to the results of using this operator.

Dim number As BigInteger = BigInteger.Parse("-9047321678449816249999312055")
Console.WriteLine("Shifting {0} right by:", number)
For ctr As Integer = 0 To 16
   Dim newNumber As BigInteger = BigInteger.Divide(number, BigInteger.Pow(2, ctr))
   If newNumber * ctr < 0 Then newNumber = newNumber - 1
   Console.WriteLine(" {0,2} bits: {1,35} {2,30}", 
                     ctr, newNumber, newNumber.ToString("X"))
Next 
' The example displays the following output: 
'      0 bits:       -9047321678449816249999312055       E2C43B1D0D6F07D2CC1FBB49 
'      1 bits:       -4523660839224908124999656028       F1621D8E86B783E9660FDDA4 
'      2 bits:       -2261830419612454062499828014        8B10EC7435BC1F4B307EED2 
'      3 bits:       -1130915209806227031249914007        C588763A1ADE0FA5983F769 
'      4 bits:        -565457604903113515624957004        E2C43B1D0D6F07D2CC1FBB4 
'      5 bits:        -282728802451556757812478502        F1621D8E86B783E9660FDDA 
'      6 bits:        -141364401225778378906239251         8B10EC7435BC1F4B307EED 
'      7 bits:         -70682200612889189453119626         C588763A1ADE0FA5983F76 
'      8 bits:         -35341100306444594726559813         E2C43B1D0D6F07D2CC1FBB 
'      9 bits:         -17670550153222297363279907         F1621D8E86B783E9660FDD 
'     10 bits:          -8835275076611148681639954          8B10EC7435BC1F4B307EE 
'     11 bits:          -4417637538305574340819977          C588763A1ADE0FA5983F7 
'     12 bits:          -2208818769152787170409989          E2C43B1D0D6F07D2CC1FB 
'     13 bits:          -1104409384576393585204995          F1621D8E86B783E9660FD 
'     14 bits:           -552204692288196792602498           8B10EC7435BC1F4B307E 
'     15 bits:           -276102346144098396301249           C588763A1ADE0FA5983F 
'     16 bits:           -138051173072049198150625           E2C43B1D0D6F07D2CC1F

If shift is greater than or equal to the number of bits in a positive BigInteger value, the result of the right-shift operation is BigInteger.Zero. If shift is greater than the number of bits in a negative BigInteger value, the result of the right-shift operation is BigInteger.MinusOne.

.NET Framework

Supported in: 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1

Windows Phone 8.1, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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