BigInteger.LeftShift(BigInteger, Int32) Opérateur

Référence

Définition

Espace de noms:: System.Numerics

Assembly:: System.Runtime.Numerics.dll

Assembly:: System.Numerics.dll

Assembly:: netstandard.dll

Source:: BigInteger.cs

Source:: BigInteger.cs

Source:: BigInteger.cs

Important

Certaines informations portent sur la préversion du produit qui est susceptible d’être en grande partie modifiée avant sa publication. Microsoft exclut toute garantie, expresse ou implicite, concernant les informations fournies ici.

Décale une valeur BigInteger d'un certain nombre de bits vers la gauche.

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, int, System::Numerics::BigInteger>::op_LeftShift;

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

Paramètres

value: BigInteger

Valeur dont les bits doivent être décalés.

shift: Int32

Nombre de bits de décalage vers la gauche de value.

Retours

BigInteger

Valeur décalée vers la gauche en fonction du nombre de bits spécifié.

Implémente

LeftShift(TSelf, TOther)

Remarques

La LeftShift méthode définit l’opération de l’opérateur de décalage gauche au niveau du bit pour les BigInteger valeurs. Il active le code tel que le suivant :

BigInteger number = BigInteger.Parse("-9047321678449816249999312055");
Console.WriteLine("Shifting {0} left 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 left by:
//      0 bits:       -9047321678449816249999312055       E2C43B1D0D6F07D2CC1FBB49
//      1 bits:      -18094643356899632499998624110       C588763A1ADE0FA5983F7692
//      2 bits:      -36189286713799264999997248220       8B10EC7435BC1F4B307EED24
//      3 bits:      -72378573427598529999994496440      F1621D8E86B783E9660FDDA48
//      4 bits: -1.4475714685519705999998899288E+29      E2C43B1D0D6F07D2CC1FBB490
//      5 bits: -2.8951429371039411999997798576E+29      C588763A1ADE0FA5983F76920
//      6 bits: -5.7902858742078823999995597152E+29      8B10EC7435BC1F4B307EED240
//      7 bits:  -1.158057174841576479999911943E+30     F1621D8E86B783E9660FDDA480
//      8 bits: -2.3161143496831529599998238861E+30     E2C43B1D0D6F07D2CC1FBB4900
//      9 bits: -4.6322286993663059199996477722E+30     C588763A1ADE0FA5983F769200
//     10 bits: -9.2644573987326118399992955443E+30     8B10EC7435BC1F4B307EED2400
//     11 bits: -1.8528914797465223679998591089E+31    F1621D8E86B783E9660FDDA4800
//     12 bits: -3.7057829594930447359997182177E+31    E2C43B1D0D6F07D2CC1FBB49000
//     13 bits: -7.4115659189860894719994364355E+31    C588763A1ADE0FA5983F7692000
//     14 bits: -1.4823131837972178943998872871E+32    8B10EC7435BC1F4B307EED24000
//     15 bits: -2.9646263675944357887997745742E+32   F1621D8E86B783E9660FDDA48000
//     16 bits: -5.9292527351888715775995491484E+32   E2C43B1D0D6F07D2CC1FBB490000

    let number = BigInteger.Parse "-9047321678449816249999312055"
    printfn $"Shifting {number} left by:"

    for ctr = 0 to 16 do
        let newNumber = number <<< ctr
        printfn $" {ctr, 2} bits: {newNumber, 35} {newNumber:X}"
// The example displays the following output:
//    Shifting -9047321678449816249999312055 left by:
//      0 bits:       -9047321678449816249999312055       E2C43B1D0D6F07D2CC1FBB49
//      1 bits:      -18094643356899632499998624110       C588763A1ADE0FA5983F7692
//      2 bits:      -36189286713799264999997248220       8B10EC7435BC1F4B307EED24
//      3 bits:      -72378573427598529999994496440      F1621D8E86B783E9660FDDA48
//      4 bits: -1.4475714685519705999998899288E+29      E2C43B1D0D6F07D2CC1FBB490
//      5 bits: -2.8951429371039411999997798576E+29      C588763A1ADE0FA5983F76920
//      6 bits: -5.7902858742078823999995597152E+29      8B10EC7435BC1F4B307EED240
//      7 bits:  -1.158057174841576479999911943E+30     F1621D8E86B783E9660FDDA480
//      8 bits: -2.3161143496831529599998238861E+30     E2C43B1D0D6F07D2CC1FBB4900
//      9 bits: -4.6322286993663059199996477722E+30     C588763A1ADE0FA5983F769200
//     10 bits: -9.2644573987326118399992955443E+30     8B10EC7435BC1F4B307EED2400
//     11 bits: -1.8528914797465223679998591089E+31    F1621D8E86B783E9660FDDA4800
//     12 bits: -3.7057829594930447359997182177E+31    E2C43B1D0D6F07D2CC1FBB49000
//     13 bits: -7.4115659189860894719994364355E+31    C588763A1ADE0FA5983F7692000
//     14 bits: -1.4823131837972178943998872871E+32    8B10EC7435BC1F4B307EED24000
//     15 bits: -2.9646263675944357887997745742E+32   F1621D8E86B783E9660FDDA48000
//     16 bits: -5.9292527351888715775995491484E+32   E2C43B1D0D6F07D2CC1FBB490000

Dim number As BigInteger = BigInteger.Parse("-9047321678449816249999312055")
Console.WriteLine("Shifting {0} left 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 left by:
'      0 bits:       -9047321678449816249999312055       E2C43B1D0D6F07D2CC1FBB49
'      1 bits:      -18094643356899632499998624110       C588763A1ADE0FA5983F7692
'      2 bits:      -36189286713799264999997248220       8B10EC7435BC1F4B307EED24
'      3 bits:      -72378573427598529999994496440      F1621D8E86B783E9660FDDA48
'      4 bits: -1.4475714685519705999998899288E+29      E2C43B1D0D6F07D2CC1FBB490
'      5 bits: -2.8951429371039411999997798576E+29      C588763A1ADE0FA5983F76920
'      6 bits: -5.7902858742078823999995597152E+29      8B10EC7435BC1F4B307EED240
'      7 bits:  -1.158057174841576479999911943E+30     F1621D8E86B783E9660FDDA480
'      8 bits: -2.3161143496831529599998238861E+30     E2C43B1D0D6F07D2CC1FBB4900
'      9 bits: -4.6322286993663059199996477722E+30     C588763A1ADE0FA5983F769200
'     10 bits: -9.2644573987326118399992955443E+30     8B10EC7435BC1F4B307EED2400
'     11 bits: -1.8528914797465223679998591089E+31    F1621D8E86B783E9660FDDA4800
'     12 bits: -3.7057829594930447359997182177E+31    E2C43B1D0D6F07D2CC1FBB49000
'     13 bits: -7.4115659189860894719994364355E+31    C588763A1ADE0FA5983F7692000
'     14 bits: -1.4823131837972178943998872871E+32    8B10EC7435BC1F4B307EED24000
'     15 bits: -2.9646263675944357887997745742E+32   F1621D8E86B783E9660FDDA48000
'     16 bits: -5.9292527351888715775995491484E+32   E2C43B1D0D6F07D2CC1FBB490000

Notes

Contrairement à l’opération de décalage vers la gauche au niveau du bit avec des primitives entières, la LeftShift méthode conserve le signe de la valeur d’origine BigInteger .

Les langues qui ne prennent pas en charge les opérateurs personnalisés peuvent effectuer une opération de décalage vers la gauche au niveau du bit en multipliant value par BigInteger.Pow(2, shift). L’exemple suivant montre que les résultats sont identiques aux résultats de l’utilisation de cet opérateur.

BigInteger number = BigInteger.Parse("-9047321678449816249999312055");
Console.WriteLine("Shifting {0} left by:", number);
for (int ctr = 0; ctr <= 16; ctr++)
{
   BigInteger newNumber = BigInteger.Multiply(number, BigInteger.Pow(2, ctr));
   Console.WriteLine(" {0,2} bits: {1,35} {2,30}",
                     ctr, newNumber, newNumber.ToString("X"));
}
// The example displays the following output:
//    Shifting -9047321678449816249999312055 left by:
//      0 bits:       -9047321678449816249999312055       E2C43B1D0D6F07D2CC1FBB49
//      1 bits:      -18094643356899632499998624110       C588763A1ADE0FA5983F7692
//      2 bits:      -36189286713799264999997248220       8B10EC7435BC1F4B307EED24
//      3 bits:      -72378573427598529999994496440      F1621D8E86B783E9660FDDA48
//      4 bits: -1.4475714685519705999998899288E+29      E2C43B1D0D6F07D2CC1FBB490
//      5 bits: -2.8951429371039411999997798576E+29      C588763A1ADE0FA5983F76920
//      6 bits: -5.7902858742078823999995597152E+29      8B10EC7435BC1F4B307EED240
//      7 bits:  -1.158057174841576479999911943E+30     F1621D8E86B783E9660FDDA480
//      8 bits: -2.3161143496831529599998238861E+30     E2C43B1D0D6F07D2CC1FBB4900
//      9 bits: -4.6322286993663059199996477722E+30     C588763A1ADE0FA5983F769200
//     10 bits: -9.2644573987326118399992955443E+30     8B10EC7435BC1F4B307EED2400
//     11 bits: -1.8528914797465223679998591089E+31    F1621D8E86B783E9660FDDA4800
//     12 bits: -3.7057829594930447359997182177E+31    E2C43B1D0D6F07D2CC1FBB49000
//     13 bits: -7.4115659189860894719994364355E+31    C588763A1ADE0FA5983F7692000
//     14 bits: -1.4823131837972178943998872871E+32    8B10EC7435BC1F4B307EED24000
//     15 bits: -2.9646263675944357887997745742E+32   F1621D8E86B783E9660FDDA48000
//     16 bits: -5.9292527351888715775995491484E+32   E2C43B1D0D6F07D2CC1FBB490000

    let number = BigInteger.Parse "-9047321678449816249999312055"
    printfn $"Shifting {number} left by:"

    for ctr = 0 to 16 do
        let newNumber = number * BigInteger.Pow(2, ctr)
        printfn $" {ctr, 2} bits: {newNumber, 35} {newNumber:X}"
// The example displays the following output:
//    Shifting -9047321678449816249999312055 left by:
//      0 bits:       -9047321678449816249999312055       E2C43B1D0D6F07D2CC1FBB49
//      1 bits:      -18094643356899632499998624110       C588763A1ADE0FA5983F7692
//      2 bits:      -36189286713799264999997248220       8B10EC7435BC1F4B307EED24
//      3 bits:      -72378573427598529999994496440      F1621D8E86B783E9660FDDA48
//      4 bits: -1.4475714685519705999998899288E+29      E2C43B1D0D6F07D2CC1FBB490
//      5 bits: -2.8951429371039411999997798576E+29      C588763A1ADE0FA5983F76920
//      6 bits: -5.7902858742078823999995597152E+29      8B10EC7435BC1F4B307EED240
//      7 bits:  -1.158057174841576479999911943E+30     F1621D8E86B783E9660FDDA480
//      8 bits: -2.3161143496831529599998238861E+30     E2C43B1D0D6F07D2CC1FBB4900
//      9 bits: -4.6322286993663059199996477722E+30     C588763A1ADE0FA5983F769200
//     10 bits: -9.2644573987326118399992955443E+30     8B10EC7435BC1F4B307EED2400
//     11 bits: -1.8528914797465223679998591089E+31    F1621D8E86B783E9660FDDA4800
//     12 bits: -3.7057829594930447359997182177E+31    E2C43B1D0D6F07D2CC1FBB49000
//     13 bits: -7.4115659189860894719994364355E+31    C588763A1ADE0FA5983F7692000
//     14 bits: -1.4823131837972178943998872871E+32    8B10EC7435BC1F4B307EED24000
//     15 bits: -2.9646263675944357887997745742E+32   F1621D8E86B783E9660FDDA48000
//     16 bits: -5.9292527351888715775995491484E+32   E2C43B1D0D6F07D2CC1FBB490000

Dim number As BigInteger = BigInteger.Parse("-9047321678449816249999312055")
Console.WriteLine("Shifting {0} left by:", number)
For ctr As Integer = 0 To 16
   Dim newNumber As BigInteger = BigInteger.Multiply(number, BigInteger.Pow(2, ctr))
   Console.WriteLine(" {0,2} bits: {1,35} {2,30}", 
                     ctr, newNumber, newNumber.ToString("X"))
Next
' The example displays the following output:
'    Shifting -9047321678449816249999312055 left by:
'      0 bits:       -9047321678449816249999312055       E2C43B1D0D6F07D2CC1FBB49
'      1 bits:      -18094643356899632499998624110       C588763A1ADE0FA5983F7692
'      2 bits:      -36189286713799264999997248220       8B10EC7435BC1F4B307EED24
'      3 bits:      -72378573427598529999994496440      F1621D8E86B783E9660FDDA48
'      4 bits: -1.4475714685519705999998899288E+29      E2C43B1D0D6F07D2CC1FBB490
'      5 bits: -2.8951429371039411999997798576E+29      C588763A1ADE0FA5983F76920
'      6 bits: -5.7902858742078823999995597152E+29      8B10EC7435BC1F4B307EED240
'      7 bits:  -1.158057174841576479999911943E+30     F1621D8E86B783E9660FDDA480
'      8 bits: -2.3161143496831529599998238861E+30     E2C43B1D0D6F07D2CC1FBB4900
'      9 bits: -4.6322286993663059199996477722E+30     C588763A1ADE0FA5983F769200
'     10 bits: -9.2644573987326118399992955443E+30     8B10EC7435BC1F4B307EED2400
'     11 bits: -1.8528914797465223679998591089E+31    F1621D8E86B783E9660FDDA4800
'     12 bits: -3.7057829594930447359997182177E+31    E2C43B1D0D6F07D2CC1FBB49000
'     13 bits: -7.4115659189860894719994364355E+31    C588763A1ADE0FA5983F7692000
'     14 bits: -1.4823131837972178943998872871E+32    8B10EC7435BC1F4B307EED24000
'     15 bits: -2.9646263675944357887997745742E+32   F1621D8E86B783E9660FDDA48000
'     16 bits: -5.9292527351888715775995491484E+32   E2C43B1D0D6F07D2CC1FBB490000

S’applique à

Voir aussi

RightShift(BigInteger, Int32)

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