Decimal.GetBits(Decimal) Método

Definição

Converte o valor da instância especificada de Decimal para sua representação de cadeia de caracteres equivalente.Converts the value of a specified instance of Decimal to its equivalent binary representation.

public:
 static cli::array <int> ^ GetBits(System::Decimal d);
public static int[] GetBits (decimal d);
static member GetBits : decimal -> int[]
Public Shared Function GetBits (d As Decimal) As Integer()

Parâmetros

d
Decimal

O valor a ser convertido.The value to convert.

Retornos

Int32[]

Uma matriz de número inteiro com sinal de 32 bits com quatro elementos que contêm a representação binária de d.A 32-bit signed integer array with four elements that contain the binary representation of d.

Exemplos

O exemplo a seguir usa o método GetBits para converter vários valores de Decimal em suas representações binárias equivalentes.The following example uses the GetBits method to convert several Decimal values to their equivalent binary representations. Em seguida, ele exibe os valores decimais e o valor hexadecimal dos elementos na matriz retornados pelo método GetBits.It then displays the decimal values and the hexadecimal value of the elements in the array returned by the GetBits method.

using namespace System;

int main()
{
   // Define an array of Decimal values.
   array<Decimal>^ values = gcnew array<Decimal>  { Decimal::One, 
                                  Decimal::Parse("100000000000000"), 
                                  Decimal::Parse("10000000000000000000000000000"),
                                  Decimal::Parse("100000000000000.00000000000000"), 
                                  Decimal::Parse("1.0000000000000000000000000000"),
                                  Decimal::Parse("123456789"), 
                                  Decimal::Parse("0.123456789"), 
                                  Decimal::Parse("0.000000000123456789"), 
                                  Decimal::Parse("0.000000000000000000123456789"), 
                                  Decimal::Parse("4294967295.0"), 
                                  Decimal::Parse("18446744073709551615.0"), 
                                  Decimal::MaxValue, Decimal::MinValue, 
                                  Decimal::Parse("-7.9228162514264337593543950335") }; 

   Console::WriteLine("{0,31}  {1,10:X8}{2,10:X8}{3,10:X8}{4,10:X8}", 
                      "Argument", "Bits[3]", "Bits[2]", "Bits[1]", "Bits[0]" );
   Console::WriteLine("{0,31}  {1,10:X8}{2,10:X8}{3,10:X8}{4,10:X8}", 
                      "--------", "-------", "-------", "-------", "-------" );
   
   for each (Decimal value in values)
   {
      array<int>^ bits = Decimal::GetBits(value); 
      Console::WriteLine("{0,31}  {1,10:X8}{2,10:X8}{3,10:X8}{4,10:X8}", 
                         value, bits[3], bits[2], bits[1], bits[0] );
   }
}

/*
This example of the Decimal::GetBits( Decimal ) method
generates the following output. It displays the argument
as a Decimal and the result array in hexadecimal.

                       Argument     Bits[3]   Bits[2]   Bits[1]   Bits[0]
                       --------     -------   -------   -------   -------
                              1    00000000  00000000  00000000  00000001
                100000000000000    00000000  00000000  00005AF3  107A4000
  10000000000000000000000000000    00000000  204FCE5E  3E250261  10000000
 100000000000000.00000000000000    000E0000  204FCE5E  3E250261  10000000
 1.0000000000000000000000000000    001C0000  204FCE5E  3E250261  10000000
                      123456789    00000000  00000000  00000000  075BCD15
                    0.123456789    00090000  00000000  00000000  075BCD15
           0.000000000123456789    00120000  00000000  00000000  075BCD15
  0.000000000000000000123456789    001B0000  00000000  00000000  075BCD15
                     4294967295    00000000  00000000  00000000  FFFFFFFF
           18446744073709551615    00000000  00000000  FFFFFFFF  FFFFFFFF
  79228162514264337593543950335    00000000  FFFFFFFF  FFFFFFFF  FFFFFFFF
 -79228162514264337593543950335    80000000  FFFFFFFF  FFFFFFFF  FFFFFFFF
-7.9228162514264337593543950335    801C0000  FFFFFFFF  FFFFFFFF  FFFFFFFF
*/
using System;

class Example
{
   public static void Main()
   {
      // Define an array of Decimal values.
      Decimal[] values = { 1M, 100000000000000M, 10000000000000000000000000000M,
                           100000000000000.00000000000000M, 1.0000000000000000000000000000M,
                           123456789M, 0.123456789M, 0.000000000123456789M,
                           0.000000000000000000123456789M, 4294967295M,
                           18446744073709551615M, Decimal.MaxValue,
                           Decimal.MinValue, -7.9228162514264337593543950335M }; 
      
      Console.WriteLine("{0,31}  {1,10:X8}{2,10:X8}{3,10:X8}{4,10:X8}", 
                        "Argument", "Bits[3]", "Bits[2]", "Bits[1]", 
                        "Bits[0]" );
      Console.WriteLine( "{0,31}  {1,10:X8}{2,10:X8}{3,10:X8}{4,10:X8}", 
                         "--------", "-------", "-------", "-------", 
                         "-------" );

      // Iterate each element and display its binary representation
      foreach (var value in values) {
        int[] bits = decimal.GetBits(value);
        Console.WriteLine("{0,31}  {1,10:X8}{2,10:X8}{3,10:X8}{4,10:X8}", 
                          value, bits[3], bits[2], bits[1], bits[0]);
      }
   }
}
// The example displays the following output:
//                           Argument     Bits[3]   Bits[2]   Bits[1]   Bits[0]
//                           --------     -------   -------   -------   -------
//                                  1    00000000  00000000  00000000  00000001
//                    100000000000000    00000000  00000000  00005AF3  107A4000
//      10000000000000000000000000000    00000000  204FCE5E  3E250261  10000000
//     100000000000000.00000000000000    000E0000  204FCE5E  3E250261  10000000
//     1.0000000000000000000000000000    001C0000  204FCE5E  3E250261  10000000
//                          123456789    00000000  00000000  00000000  075BCD15
//                        0.123456789    00090000  00000000  00000000  075BCD15
//               0.000000000123456789    00120000  00000000  00000000  075BCD15
//      0.000000000000000000123456789    001B0000  00000000  00000000  075BCD15
//                         4294967295    00000000  00000000  00000000  FFFFFFFF
//               18446744073709551615    00000000  00000000  FFFFFFFF  FFFFFFFF
//      79228162514264337593543950335    00000000  FFFFFFFF  FFFFFFFF  FFFFFFFF
//     -79228162514264337593543950335    80000000  FFFFFFFF  FFFFFFFF  FFFFFFFF
//    -7.9228162514264337593543950335    801C0000  FFFFFFFF  FFFFFFFF  FFFFFFFF
Module Example
   Public Sub Main()
      ' Define an array of decimal values.
      Dim values() As Decimal = { 1d, 100000000000000d, 
                                  10000000000000000000000000000d,
                                  100000000000000.00000000000000d, 
                                  1.0000000000000000000000000000d,
                                  123456789d, 0.123456789d, 
                                  0.000000000123456789d,
                                  0.000000000000000000123456789d, 
                                  4294967295d,
                                  18446744073709551615d, 
                                  Decimal.MaxValue, Decimal.MinValue, 
                                  -7.9228162514264337593543950335d }

      Console.WriteLine("{0,31}  {1,10:X8}{2,10:X8}{3,10:X8}{4,10:X8}", 
                        "Argument", "Bits[3]", "Bits[2]", "Bits[1]", 
                        "Bits[0]" )
      Console.WriteLine( "{0,31}  {1,10:X8}{2,10:X8}{3,10:X8}{4,10:X8}", 
                         "--------", "-------", "-------", "-------", 
                         "-------" )

      ' Iterate each element and display its binary representation
      For Each value In values
         Dim bits() As Integer = Decimal.GetBits(value)
        Console.WriteLine("{0,31}  {1,10:X8}{2,10:X8}{3,10:X8}{4,10:X8}", 
                          value, bits(3), bits(2), bits(1), bits(0))

       Next
    End Sub
End Module 
' The example displays the following output:
'
'                        Argument     Bits(3)   Bits(2)   Bits(1)   Bits(0)
'                        --------     -------   -------   -------   -------
'                               1    00000000  00000000  00000000  00000001
'                 100000000000000    00000000  00000000  00005AF3  107A4000
'   10000000000000000000000000000    00000000  204FCE5E  3E250261  10000000
'  100000000000000.00000000000000    000E0000  204FCE5E  3E250261  10000000
'  1.0000000000000000000000000000    001C0000  204FCE5E  3E250261  10000000
'                       123456789    00000000  00000000  00000000  075BCD15
'                     0.123456789    00090000  00000000  00000000  075BCD15
'            0.000000000123456789    00120000  00000000  00000000  075BCD15
'   0.000000000000000000123456789    001B0000  00000000  00000000  075BCD15
'                      4294967295    00000000  00000000  00000000  FFFFFFFF
'            18446744073709551615    00000000  00000000  FFFFFFFF  FFFFFFFF
'   79228162514264337593543950335    00000000  FFFFFFFF  FFFFFFFF  FFFFFFFF
'  -79228162514264337593543950335    80000000  FFFFFFFF  FFFFFFFF  FFFFFFFF
' -7.9228162514264337593543950335    801C0000  FFFFFFFF  FFFFFFFF  FFFFFFFF

O exemplo a seguir usa o método GetBits para recuperar as partes do componente de uma matriz.The following example uses the GetBits method to retrieve the component parts of an array. Em seguida, ele usa essa matriz na chamada para o Construtor Decimal(Int32, Int32, Int32, Boolean, Byte) para instanciar um novo valor de Decimal.It then uses this array in the call to the Decimal(Int32, Int32, Int32, Boolean, Byte) constructor to instantiate a new Decimal value.

using System;

public class Example
{
   public static void Main()
   {
      Decimal[] values = { 1234.96m, -1234.96m };
      foreach (var value in values) {
         int[] parts = Decimal.GetBits(value);
         bool sign = (parts[3] & 0x80000000) != 0;
   
         byte scale = (byte) ((parts[3] >> 16) & 0x7F); 
         Decimal newValue = new Decimal(parts[0], parts[1], parts[2], sign, scale);
         Console.WriteLine("{0} --> {1}", value, newValue);
      }
   }
}
// The example displays the following output:
//       1234.96 --> 1234.96
//       -1234.96 --> -1234.96
Module Example
   Public Sub Main()
      Dim values() As Decimal = { 1234.96d, -1234.96d }
      For Each value In values
         Dim parts() = Decimal.GetBits(value)
         Dim sign As Boolean = (parts(3) And &h80000000) <> 0
         Dim scale As Byte = CByte((parts(3) >> 16) And &H7F)
   
         Dim newValue As New Decimal(parts(0), parts(1), parts(2), sign, scale)    
         Console.WriteLine("{0} --> {1}", value, newValue)
      Next   
   End Sub
End Module
' The example displays the following output:
'    1234.96 --> 1234.96
'    -1234.96 --> -1234.96

Comentários

A representação binária de um número de Decimal consiste em um sinal de 1 bit, um número inteiro de 96 bits e um fator de dimensionamento usado para dividir o número inteiro e especificar qual parte dele é uma fração decimal.The binary representation of a Decimal number consists of a 1-bit sign, a 96-bit integer number, and a scaling factor used to divide the integer number and specify what portion of it is a decimal fraction. O fator de dimensionamento é implicitamente o número 10, elevado a um expoente que varia de 0 a 28.The scaling factor is implicitly the number 10, raised to an exponent ranging from 0 to 28.

O valor de retorno é uma matriz de quatro elementos de inteiros de 32 bits com sinal.The return value is a four-element array of 32-bit signed integers.

O primeiro, o segundo e o terceiro elementos da matriz retornada contêm os bits inferior, médio e alto 32 do número inteiro de 96 bits.The first, second, and third elements of the returned array contain the low, middle, and high 32 bits of the 96-bit integer number.

O quarto elemento da matriz retornada contém o fator de escala e o sinal.The fourth element of the returned array contains the scale factor and sign. Ele consiste nas seguintes partes:It consists of the following parts:

Bits 0 a 15, a palavra inferior, não são usadas e devem ser zero.Bits 0 to 15, the lower word, are unused and must be zero.

Os bits 16 a 23 devem conter um expoente entre 0 e 28, que indica a potência de 10 para dividir o número inteiro.Bits 16 to 23 must contain an exponent between 0 and 28, which indicates the power of 10 to divide the integer number.

Os bits 24 a 30 não são usados e devem ser zero.Bits 24 to 30 are unused and must be zero.

O bit 31 contém o sinal: 0 Mean positivo e 1 significa negativo.Bit 31 contains the sign: 0 mean positive, and 1 means negative.

Observe que a representação de bits é diferenciada entre zero negativo e positivo.Note that the bit representation differentiates between negative and positive zero. Esses valores são tratados como sendo iguais em todas as operações.These values are treated as being equal in all operations.

Aplica-se a

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