BigInteger.RightShift(BigInteger, Int32) Operador

Referência

Definição

Namespace:: System.Numerics

Assembly:: System.Runtime.Numerics.dll

Assembly:: System.Numerics.dll

Assembly:: netstandard.dll

Importante

Algumas informações se referem a produtos de pré-lançamento que podem ser substancialmente modificados antes do lançamento. A Microsoft não oferece garantias, expressas ou implícitas, das informações aqui fornecidas.

Desloca um valor BigInteger um número especificado de bits para a direita.

public:
 static System::Numerics::BigInteger operator >>(System::Numerics::BigInteger value, int shift);

public:
 static System::Numerics::BigInteger operator >>(System::Numerics::BigInteger value, int shift) = System::Numerics::IShiftOperators<System::Numerics::BigInteger, System::Numerics::BigInteger>::op_RightShift;

public static System.Numerics.BigInteger operator >> (System.Numerics.BigInteger value, int shift);

static member ( >>> ) : System.Numerics.BigInteger * int -> System.Numerics.BigInteger

Public Shared Operator >> (value As BigInteger, shift As Integer) As BigInteger

Parâmetros

value: BigInteger

O valor cujos bits devem ser deslocados.

shift: Int32

O número de bits a deslocar value para a direita.

Retornos

BigInteger

Um valor que foi sido deslocado para a direita pelo número especificado de bits.

Implementações

System.Numerics.IShiftOperators`2.op_RightShift(`0,System.Int32)

Comentários

O RightShift método define a operação do operador de turno à direita bit a bit para BigInteger valores. Ele permite que o código seja o seguinte:

var number = BigInteger.Parse("-9047321678449816249999312055");
Console.WriteLine("Shifting {0} right by:", number);
for (int ctr = 0; ctr <= 16; ctr++) {
   BigInteger newNumber = number >> ctr;
   Console.WriteLine(" {0,2} bits: {1,35} {2,30}", ctr, newNumber, newNumber.ToString("X"));
}
// The example displays the following output:
//    Shifting -9047321678449816249999312055 right by:
//      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

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 = number >> ctr
   Console.WriteLine(" {0,2} bits: {1,35} {2,30}", ctr, newNumber, newNumber.ToString("X"))
Next
' The example displays the following output:
'    Shifting -9047321678449816249999312055 right by:
'      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

Idiomas que não dão suporte a operadores personalizados podem executar uma operação de turno à direita bit a bit dividindo value BigInteger.Pow(2, shift) e subtraindo 1 vezes shift para valores negativos. O exemplo a seguir mostra que os resultados são idênticos aos resultados do uso desse operador.

var number = BigInteger.Parse("-9047321678449816249999312055");
Console.WriteLine("Shifting {0} right by:", number);
for (int ctr = 0; ctr <= 16; ctr++) {
   BigInteger newNumber = BigInteger.Divide(number, BigInteger.Pow(2, ctr));
   if (newNumber * ctr < 0)
      newNumber--;

   Console.WriteLine(" {0,2} bits: {1,35} {2,30}",
                     ctr, newNumber, newNumber.ToString("X"));
}
// 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

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

Se shift for maior ou igual ao número de bits em um valor positivo BigInteger , o resultado da operação de deslocamento à direita será BigInteger.Zero. Se shift for maior que o número de bits em um valor negativo BigInteger , o resultado da operação de deslocamento à direita será BigInteger.MinusOne.

Aplica-se a

Confira também

LeftShift(BigInteger, Int32)