BigInteger 结构

定义

表示任意大的带符号整数。Represents an arbitrarily large signed integer.

public value class BigInteger : IComparable, IComparable<System::Numerics::BigInteger>, IEquatable<System::Numerics::BigInteger>, IFormattable
[System.Serializable]
public struct BigInteger : IComparable, IComparable<System.Numerics.BigInteger>, IEquatable<System.Numerics.BigInteger>, IFormattable
type BigInteger = struct
    interface IFormattable
Public Structure BigInteger
Implements IComparable, IComparable(Of BigInteger), IEquatable(Of BigInteger), IFormattable
继承
BigInteger
属性
实现

注解

BigInteger 类型是一个不可变类型,表示其值在理论上没有上限或下限的任意大整数。The BigInteger type is an immutable type that represents an arbitrarily large integer whose value in theory has no upper or lower bounds. BigInteger 类型的成员与其他整型类型(ByteInt16Int32Int64SByteUInt16UInt32UInt64 类型)紧密并行。The members of the BigInteger type closely parallel those of other integral types (the Byte, Int16, Int32, Int64, SByte, UInt16, UInt32, and UInt64 types). 此类型不同于 .NET Framework.NET Framework中的其他整型类型,该类型的范围由其 MinValueMaxValue 属性指示。This type differs from the other integral types in the .NET Framework.NET Framework, which have a range indicated by their MinValue and MaxValue properties.

备注

由于 BigInteger 类型是不可变的(请参阅可变性和 BigInteger 结构),因为它没有上限或下限,所以,对于导致 BigInteger 值增长太大的任何操作,可能会引发 OutOfMemoryExceptionBecause the BigInteger type is immutable (see Mutability and the BigInteger Structure) and because it has no upper or lower bounds, an OutOfMemoryException can be thrown for any operation that causes a BigInteger value to grow too large.

实例化 BigInteger 对象Instantiating a BigInteger Object

可以通过多种方式实例化 BigInteger 对象:You can instantiate a BigInteger object in several ways:

  • 您可以使用 new 关键字并提供任何整型或浮点值作为 BigInteger 构造函数的参数。You can use the new keyword and provide any integral or floating-point value as a parameter to the BigInteger constructor. (浮点值在分配到 BigInteger之前会被截断。)下面的示例演示如何使用 new 关键字来实例化 BigInteger 值。(Floating-point values are truncated before they are assigned to the BigInteger.) The following example illustrates how to use the new keyword to instantiate BigInteger values.

    BigInteger bigIntFromDouble = new BigInteger(179032.6541);
    Console.WriteLine(bigIntFromDouble);
    BigInteger bigIntFromInt64 = new BigInteger(934157136952);
    Console.WriteLine(bigIntFromInt64);
    // The example displays the following output:
    //   179032
    //   934157136952		
    
    Dim bigIntFromDouble As New BigInteger(179032.6541)
    Console.WriteLine(bigIntFromDouble)
    Dim bigIntFromInt64 As New BigInteger(934157136952)
    Console.WriteLine(bigIntFromInt64)
    ' The example displays the following output:
    '   179032
    '   934157136952		
    
  • 您可以声明一个 BigInteger 变量并为其分配一个值,就像对任何数值类型一样,前提是该值是整型。You can declare a BigInteger variable and assign it a value just as you would any numeric type, as long as that value is an integral type. 下面的示例使用赋值从 Int64创建 BigInteger 值。The following example uses assignment to create a BigInteger value from an Int64.

    long longValue = 6315489358112;      
    BigInteger assignedFromLong = longValue;
    Console.WriteLine(assignedFromLong);
    // The example displays the following output:
    //   6315489358112
    
    Dim longValue As Long = 6315489358112      
    Dim assignedFromLong As BigInteger = longValue
    Console.WriteLine(assignedFromLong)
    ' The example displays the following output:
    '   6315489358112
    
  • 如果强制转换值或先转换值,则可以向 BigInteger 对象分配 decimal 或浮点值。You can assign a decimal or floating-point value to a BigInteger object if you cast the value or convert it first. 下面的示例显式转换(在C#中)或将DoubleDecimal值 Visual Basic 转换为 BigIntegerThe following example explicitly casts (in C#) or converts (in Visual Basic) a Double and a Decimal value to a BigInteger.

    BigInteger assignedFromDouble = (BigInteger) 179032.6541;
    Console.WriteLine(assignedFromDouble);   
    BigInteger assignedFromDecimal = (BigInteger) 64312.65m;      
    Console.WriteLine(assignedFromDecimal);
    // The example displays the following output:
    //   179032
    //   64312      
    
    Dim assignedFromDouble As BigInteger = CType(179032.6541, BigInteger)
    Console.WriteLine(assignedFromDouble)   
    Dim assignedFromDecimal As BigInteger = CType(64312.65d, BigInteger)      
    Console.WriteLine(assignedFromDecimal)
    ' The example displays the following output:
    '   179032
    '   64312      
    

利用这些方法,您可以实例化一个 BigInteger 对象,该对象的值只在一个现有的数值类型的范围内。These methods enable you to instantiate a BigInteger object whose value is in the range of one of the existing numeric types only. 可以通过以下三种方式之一实例化其值可以超出现有数值类型范围的 BigInteger 对象:You can instantiate a BigInteger object whose value can exceed the range of the existing numeric types in one of three ways:

  • 可以使用 new 关键字,并向 BigInteger.BigInteger 构造函数提供任意大小的字节数组。You can use the new keyword and provide a byte array of any size to the BigInteger.BigInteger constructor. 例如:For example:

    byte[] byteArray = { 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0};
    BigInteger newBigInt = new BigInteger(byteArray);
    Console.WriteLine("The value of newBigInt is {0} (or 0x{0:x}).", newBigInt);    
    // The example displays the following output:
    //   The value of newBigInt is 4759477275222530853130 (or 0x102030405060708090a).
    
    Dim byteArray() As Byte = { 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0}
    Dim newBigInt As New BigInteger(byteArray)
    Console.WriteLine("The value of newBigInt is {0} (or 0x{0:x}).", newBigInt)    
    ' The example displays the following output:
    '   The value of newBigInt is 4759477275222530853130 (or 0x102030405060708090a).
    
  • 可以调用 ParseTryParse 方法将数字的字符串表示形式转换为 BigIntegerYou can call the Parse or TryParse methods to convert the string representation of a number to a BigInteger. 例如:For example:

    string positiveString = "91389681247993671255432112000000";
    string negativeString = "-90315837410896312071002088037140000";
    BigInteger posBigInt = 0;
    BigInteger negBigInt = 0;
    
    try {
       posBigInt = BigInteger.Parse(positiveString);
       Console.WriteLine(posBigInt);
    }
    catch (FormatException)
    {
       Console.WriteLine("Unable to convert the string '{0}' to a BigInteger value.", 
                         positiveString);
    }
    
    if (BigInteger.TryParse(negativeString, out negBigInt))
      Console.WriteLine(negBigInt);
    else
       Console.WriteLine("Unable to convert the string '{0}' to a BigInteger value.", 
                          negativeString);
    
    // The example displays the following output:
    //   9.1389681247993671255432112E+31
    //   -9.0315837410896312071002088037E+34
    
    Dim positiveString As String = "91389681247993671255432112000000"
    Dim negativeString As string = "-90315837410896312071002088037140000"
    Dim posBigInt As BigInteger = 0
    Dim negBigInt As BigInteger = 0
    
    Try
       posBigInt = BigInteger.Parse(positiveString)
       Console.WriteLine(posBigInt)
    Catch e As FormatException
       Console.WriteLine("Unable to convert the string '{0}' to a BigInteger value.", _
                         positiveString)
    End Try
    
    If BigInteger.TryParse(negativeString, negBigInt) Then
      Console.WriteLine(negBigInt)
    Else
       Console.WriteLine("Unable to convert the string '{0}' to a BigInteger value.", _
                          negativeString)
    End If         
    ' The example displays the following output:
    '   9.1389681247993671255432112E+31
    '   -9.0315837410896312071002088037E+34
    
  • 您可以在 Visual Basic 中调用 staticSharedBigInteger 方法,该方法对数值表达式执行某些操作并返回计算得出的 BigInteger 结果。You can call a static (Shared in Visual Basic) BigInteger method that performs some operation on a numeric expression and returns a calculated BigInteger result. 下面的示例通过多维数据集 UInt64.MaxValue 并将结果分配给 BigInteger来实现此功能。The following example does this by cubing UInt64.MaxValue and assigning the result to a BigInteger.

    BigInteger number = BigInteger.Pow(UInt64.MaxValue, 3);
    Console.WriteLine(number);
    // The example displays the following output:
    //    6277101735386680762814942322444851025767571854389858533375
    
    Dim number As BigInteger = BigInteger.Pow(UInt64.MaxValue, 3)
    Console.WriteLine(number)
    ' The example displays the following output:
      ' 6277101735386680762814942322444851025767571854389858533375
    

ZeroBigInteger 的未初始化值。The uninitialized value of a BigInteger is Zero.

对 BigInteger 值执行操作Performing Operations on BigInteger Values

您可以使用 BigInteger 实例,就像使用任何其他整型类型一样。You can use a BigInteger instance as you would use any other integral type. BigInteger 重载标准数字运算符,以使您能够执行基本的数学运算(例如加法、减法、除法、乘法、减法、求反和一元求反)。BigInteger overloads the standard numeric operators to enable you to perform basic mathematical operations such as addition, subtraction, division, multiplication, subtraction, negation, and unary negation. 您还可以使用标准数值运算符来比较两个 BigInteger 值。You can also use the standard numeric operators to compare two BigInteger values with each other. 与其他整型类型一样,BigInteger 还支持按位 AndOrXOr、左移和右移位运算符。Like the other integral types, BigInteger also supports the bitwise And, Or, XOr, left shift, and right shift operators. 对于不支持自定义运算符的语言,BigInteger 结构还提供了执行数学运算的等效方法。For languages that do not support custom operators, the BigInteger structure also provides equivalent methods for performing mathematical operations. 其中包括 AddDivideMultiplyNegateSubtract和其他一些。These include Add, Divide, Multiply, Negate, Subtract, and several others.

BigInteger 结构的许多成员直接与其他整型类型的成员相对应。Many members of the BigInteger structure correspond directly to members of the other integral types. 此外,BigInteger 添加如下成员:In addition, BigInteger adds members such as the following:

其中许多附加成员与 Math 类的成员相对应,后者提供了用于处理基元数值类型的功能。Many of these additional members correspond to the members of the Math class, which provides the functionality to work with the primitive numeric types.

可变性和 BigInteger 结构Mutability and the BigInteger Structure

下面的示例实例化一个 BigInteger 对象,然后将其值递增1。The following example instantiates a BigInteger object and then increments its value by one.

BigInteger number = BigInteger.Multiply(Int64.MaxValue, 3);
number++;
Console.WriteLine(number);
Dim number As BigInteger = BigInteger.Multiply(Int64.MaxValue, 3)
number += 1
Console.WriteLine(number)

虽然此示例似乎用于修改现有对象的值,但这不是这种情况。Although this example appears to modify the value of the existing object, this is not the case. BigInteger 对象是不可变的,这意味着,公共语言运行时实际上会创建一个新的 BigInteger 对象,并为其分配一个大于先前值的值。BigInteger objects are immutable, which means that internally, the common language runtime actually creates a new BigInteger object and assigns it a value one greater than its previous value. 然后,此新对象将返回到调用方。This new object is then returned to the caller.

备注

.NET Framework 中的其他数字类型也是不可变的。The other numeric types in the .NET Framework are also immutable. 但是,因为 BigInteger 类型没有上限或下限,所以它的值可能会变得非常大,并对性能产生显著影响。However, because the BigInteger type has no upper or lower bounds, its values can grow extremely large and have a measurable impact on performance.

尽管此过程对调用方是透明的,但它确实会导致性能下降。Although this process is transparent to the caller, it does incur a performance penalty. 在某些情况下,尤其是在非常大的 BigInteger 值的循环中执行重复的操作时,可能会导致性能下降。In some cases, especially when repeated operations are performed in a loop on very large BigInteger values, that performance penalty can be significant. 例如,在下面的示例中,操作重复执行了一百万次,每次操作成功时,BigInteger 值将递增1。For example, in the following example, an operation is performed repetitively up to a million times, and a BigInteger value is incremented by one every time the operation succeeds.

BigInteger number = Int64.MaxValue ^ 5;
int repetitions = 1000000;
// Perform some repetitive operation 1 million times.
for (int ctr = 0; ctr <= repetitions; ctr++)
{
   // Perform some operation. If it fails, exit the loop.
   if (! SomeOperationSucceeds()) break;
   // The following code executes if the operation succeeds.
   number++;
}
Dim number As BigInteger = Int64.MaxValue ^ 5
Dim repetitions As Integer = 1000000
' Perform some repetitive operation 1 million times.
For ctr As Integer = 0 To repetitions
   ' Perform some operation. If it fails, exit the loop.
   If Not SomeOperationSucceeds() Then Exit For
   ' The following code executes if the operation succeeds.
   number += 1
Next

在这种情况下,您可以通过执行对 Int32 变量的所有中间分配来提高性能。In such a case, you can improve performance by performing all intermediate assignments to an Int32 variable. 然后,在循环退出时,可以将变量的最后一个值分配给 BigInteger 的对象。The final value of the variable can then be assigned to the BigInteger object when the loop exits. 下面的示例进行了这方面的演示。The following example provides an illustration.

BigInteger number = Int64.MaxValue ^ 5;
int repetitions = 1000000;
int actualRepetitions = 0;
// Perform some repetitive operation 1 million times.
for (int ctr = 0; ctr <= repetitions; ctr++)
{
   // Perform some operation. If it fails, exit the loop.
   if (! SomeOperationSucceeds()) break;
   // The following code executes if the operation succeeds.
   actualRepetitions++;
}
number += actualRepetitions;
Dim number As BigInteger = Int64.MaxValue ^ 5
Dim repetitions As Integer = 1000000
Dim actualRepetitions As Integer = 0
' Perform some repetitive operation 1 million times.
For ctr As Integer = 0 To repetitions
   ' Perform some operation. If it fails, exit the loop.
   If Not SomeOperationSucceeds() Then Exit For
   ' The following code executes if the operation succeeds.
   actualRepetitions += 1
Next
number += actualRepetitions

处理字节数组和十六进制字符串Working with Byte Arrays and Hexadecimal Strings

如果将 BigInteger 值转换为字节数组,或将字节数组转换为 BigInteger 值,则必须考虑字节的顺序。If you convert BigInteger values to byte arrays, or if you convert byte arrays to BigInteger values, you must consider the order of bytes. BigInteger 结构要求字节数组中的单个字节以小字节序顺序显示(即,值的低序位字节优先于高阶字节之前)。The BigInteger structure expects the individual bytes in a byte array to appear in little-endian order (that is, the lower-order bytes of the value precede the higher-order bytes). 可以通过调用 ToByteArray 方法,然后将生成的字节数组传递到 BigInteger(Byte[]) 构造函数来往返 BigInteger 值,如下面的示例所示。You can round-trip a BigInteger value by calling the ToByteArray method and then passing the resulting byte array to the BigInteger(Byte[]) constructor, as the following example shows.

BigInteger number = BigInteger.Pow(Int64.MaxValue, 2);     
Console.WriteLine(number);

// Write the BigInteger value to a byte array.
byte[] bytes = number.ToByteArray();

// Display the byte array.
foreach (byte byteValue in bytes)
   Console.Write("0x{0:X2} ", byteValue);
Console.WriteLine();

// Restore the BigInteger value from a Byte array.
BigInteger newNumber = new BigInteger(bytes);
Console.WriteLine(newNumber);
// The example displays the following output:
//    8.5070591730234615847396907784E+37
//    0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0x3F
//    
//    8.5070591730234615847396907784E+37
Dim number As BigInteger = BigInteger.Pow(Int64.MaxValue, 2)     
Console.WriteLine(number)

' Write the BigInteger value to a byte array.
Dim bytes() As Byte = number.ToByteArray()

' Display the byte array.
For Each byteValue As Byte In bytes
   Console.Write("0x{0:X2} ", byteValue)
Next   
Console.WriteLine()

' Restore the BigInteger value from a Byte array.
Dim newNumber As BigInteger = New BigInteger(bytes)
Console.WriteLine(newNumber)               
' The example displays the following output:
'    8.5070591730234615847396907784E+37
'    0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0x3F
'    
'    8.5070591730234615847396907784E+37

若要从表示某个其他整型值的字节数组中实例化 BigInteger 值,你可以将整数值传递到 BitConverter.GetBytes 方法,然后将生成的字节数组传递到 BigInteger(Byte[]) 构造函数。To instantiate a BigInteger value from a byte array that represents a value of some other integral type, you can pass the integral value to the BitConverter.GetBytes method, and then pass the resulting byte array to the BigInteger(Byte[]) constructor. 下面的示例实例化一个表示 Int16 值的字节数组中的 BigInteger 值。The following example instantiates a BigInteger value from a byte array that represents an Int16 value.

short originalValue = 30000;
Console.WriteLine(originalValue);

// Convert the Int16 value to a byte array.
byte[] bytes = BitConverter.GetBytes(originalValue);

// Display the byte array.
foreach (byte byteValue in bytes)
   Console.Write("0x{0} ", byteValue.ToString("X2"));
Console.WriteLine();

// Pass byte array to the BigInteger constructor.
BigInteger number = new BigInteger(bytes);
Console.WriteLine(number);
// The example displays the following output:
//       30000
//       0x30 0x75
//       30000
Dim originalValue As Short = 30000
Console.WriteLine(originalValue)

' Convert the Int16 value to a byte array.
Dim bytes() As Byte = BitConverter.GetBytes(originalValue)

' Display the byte array.
For Each byteValue As Byte In bytes
   Console.Write("0x{0} ", byteValue.ToString("X2"))
Next    
Console.WriteLine() 

' Pass byte array to the BigInteger constructor.
Dim number As BigInteger = New BigInteger(bytes)
Console.WriteLine(number)
' The example displays the following output:
'       30000
'       0x30 0x75
'       30000

BigInteger 结构假定负值是使用两个补码表示形式存储的。The BigInteger structure assumes that negative values are stored by using two's complement representation. 由于 BigInteger 结构表示没有固定长度的数值,因此 BigInteger(Byte[]) 构造函数始终将数组中最后一个字节的最高有效位解释为符号位。Because the BigInteger structure represents a numeric value with no fixed length, the BigInteger(Byte[]) constructor always interprets the most significant bit of the last byte in the array as a sign bit. 若要防止 BigInteger(Byte[]) 构造函数混淆具有正值的符号和数量级表示形式的负值的两个补集表示形式,则在字节数组中最后一个字节的最高有效位将为正值通常设置时应包含值为0的其他字节。To prevent the BigInteger(Byte[]) constructor from confusing the two's complement representation of a negative value with the sign and magnitude representation of a positive value, positive values in which the most significant bit of the last byte in the byte array would ordinarily be set should include an additional byte whose value is 0. 例如,0xC0 0xBD 0xF0 0xFF 是-1000000 或4293967296的小字节序十六进制表示形式。For example, 0xC0 0xBD 0xF0 0xFF is the little-endian hexadecimal representation of either -1,000,000 or 4,293,967,296. 由于此数组中最后一个字节的最高有效位为 on,因此,BigInteger(Byte[]) 构造函数会将字节数组的值解释为-1000000。Because the most significant bit of the last byte in this array is on, the value of the byte array would be interpreted by the BigInteger(Byte[]) constructor as -1,000,000. 若要实例化值为正值的 BigInteger,则必须将其元素为 0xC0 0xBD 0xF0 0xFF 0x00 的字节数组传递到构造函数。To instantiate a BigInteger whose value is positive, a byte array whose elements are 0xC0 0xBD 0xF0 0xFF 0x00 must be passed to the constructor. 下面的示例阐释了这一点。The following example illustrates this.

int negativeNumber = -1000000;
uint positiveNumber = 4293967296;

byte[] negativeBytes = BitConverter.GetBytes(negativeNumber); 
BigInteger negativeBigInt = new BigInteger(negativeBytes);
Console.WriteLine(negativeBigInt.ToString("N0"));

byte[] tempPosBytes = BitConverter.GetBytes(positiveNumber);
byte[] positiveBytes = new byte[tempPosBytes.Length + 1];
Array.Copy(tempPosBytes, positiveBytes, tempPosBytes.Length);
BigInteger positiveBigInt = new BigInteger(positiveBytes);
Console.WriteLine(positiveBigInt.ToString("N0")); 
// The example displays the following output:
//    -1,000,000
//    4,293,967,296      
Dim negativeNumber As Integer = -1000000
Dim positiveNumber As UInteger = 4293967296

Dim negativeBytes() As Byte = BitConverter.GetBytes(negativeNumber) 
Dim negativeBigInt As New BigInteger(negativeBytes)
Console.WriteLine(negativeBigInt.ToString("N0"))

Dim tempPosBytes() As Byte = BitConverter.GetBytes(positiveNumber)
Dim positiveBytes(tempposBytes.Length) As Byte
Array.Copy(tempPosBytes, positiveBytes, tempPosBytes.Length)
Dim positiveBigInt As New BigInteger(positiveBytes)
Console.WriteLine(positiveBigInt.ToString("N0")) 
' The example displays the following output:
'    -1,000,000
'    4,293,967,296      

从正值 ToByteArray 方法创建的字节数组包括此额外的零值字节。Byte arrays created by the ToByteArray method from positive values include this extra zero-value byte. 因此,BigInteger 结构可以通过将值分配到,然后从字节数组中恢复它们来成功往返值,如下例所示。Therefore, the BigInteger structure can successfully round-trip values by assigning them to, and then restoring them from, byte arrays, as the following example shows.

BigInteger positiveValue = 15777216;
BigInteger negativeValue  = -1000000;

Console.WriteLine("Positive value: " + positiveValue.ToString("N0"));
byte[] bytes = positiveValue.ToByteArray();

foreach (byte byteValue in bytes)
   Console.Write("{0:X2} ", byteValue);
Console.WriteLine();
positiveValue = new BigInteger(bytes);
Console.WriteLine("Restored positive value: " + positiveValue.ToString("N0"));

Console.WriteLine();
   
Console.WriteLine("Negative value: " + negativeValue.ToString("N0"));
bytes = negativeValue.ToByteArray();
foreach (byte byteValue in bytes)
   Console.Write("{0:X2} ", byteValue);
Console.WriteLine();
negativeValue = new BigInteger(bytes);
Console.WriteLine("Restored negative value: " + negativeValue.ToString("N0"));
// The example displays the following output:
//       Positive value: 15,777,216
//       C0 BD F0 00
//       Restored positive value: 15,777,216
//       
//       Negative value: -1,000,000
//       C0 BD F0
//       Restored negative value: -1,000,000
Dim positiveValue As BigInteger = 15777216
Dim negativeValue As BigInteger = -1000000

Console.WriteLine("Positive value: " + positiveValue.ToString("N0"))
Dim bytes() As Byte = positiveValue.ToByteArray()
For Each byteValue As Byte In bytes
   Console.Write("{0:X2} ", byteValue)
Next
Console.WriteLine()
positiveValue = New BigInteger(bytes)
Console.WriteLine("Restored positive value: " + positiveValue.ToString("N0"))

Console.WriteLine()
   
Console.WriteLIne("Negative value: " + negativeValue.ToString("N0"))
bytes = negativeValue.ToByteArray()
For Each byteValue As Byte In bytes
   Console.Write("{0:X2} ", byteValue)
Next
Console.WriteLine()
negativeValue = New BigInteger(bytes)
Console.WriteLine("Restored negative value: " + negativeValue.ToString("N0"))
' The example displays the following output:
'       Positive value: 15,777,216
'       C0 BD F0 00
'       Restored positive value: 15,777,216
'       
'       Negative value: -1,000,000
'       C0 BD F0
'       Restored negative value: -1,000,000

但是,你可能需要将此额外的零值字节添加到由开发人员动态创建的字节数组,或由将无符号整数转换为字节数组(如 BitConverter.GetBytes(UInt16)BitConverter.GetBytes(UInt32)BitConverter.GetBytes(UInt64))的方法返回。However, you may need to add this additional zero-value byte to byte arrays that are created dynamically by the developer or that are returned by methods that convert unsigned integers to byte arrays (such as BitConverter.GetBytes(UInt16), BitConverter.GetBytes(UInt32), and BitConverter.GetBytes(UInt64)).

在分析十六进制字符串时,BigInteger.Parse(String, NumberStyles)BigInteger.Parse(String, NumberStyles, IFormatProvider) 方法假设设置了字符串中第一个字节的最高有效位,或字符串的第一个十六进制数字表示字节值的低四位。,则使用两个补码表示形式表示值。When parsing a hexadecimal string, the BigInteger.Parse(String, NumberStyles) and BigInteger.Parse(String, NumberStyles, IFormatProvider) methods assume that if the most significant bit of the first byte in the string is set, or if the first hexadecimal digit of the string represents the lower four bits of a byte value, the value is represented by using two's complement representation. 例如,"FF01" 和 "F01" 都表示十进制值-255。For example, both "FF01" and "F01" represent the decimal value -255. 若要将正值与负值区分开来,正值应包括前导零。To differentiate positive from negative values, positive values should include a leading zero. ToString 方法的相关重载在传递 "X" 格式字符串时,为正值在返回的十六进制字符串中添加前导零。The relevant overloads of the ToString method, when they are passed the "X" format string, add a leading zero to the returned hexadecimal string for positive values. 这样,就可以通过使用 ToStringParse 方法往返 BigInteger 值,如下面的示例所示。This makes it possible to round-trip BigInteger values by using the ToString and Parse methods, as the following example shows.

BigInteger negativeNumber = -1000000;
BigInteger positiveNumber  = 15777216;

string negativeHex = negativeNumber.ToString("X");
string positiveHex = positiveNumber.ToString("X");

BigInteger negativeNumber2, positiveNumber2;  
negativeNumber2 = BigInteger.Parse(negativeHex, 
                                   NumberStyles.HexNumber);
positiveNumber2 = BigInteger.Parse(positiveHex,
                                   NumberStyles.HexNumber);

Console.WriteLine("Converted {0:N0} to {1} back to {2:N0}.", 
                   negativeNumber, negativeHex, negativeNumber2);                                         
Console.WriteLine("Converted {0:N0} to {1} back to {2:N0}.", 
                   positiveNumber, positiveHex, positiveNumber2);                                         
// The example displays the following output:
//       Converted -1,000,000 to F0BDC0 back to -1,000,000.
//       Converted 15,777,216 to 0F0BDC0 back to 15,777,216.
Dim negativeNumber As BigInteger = -1000000
Dim positiveNumber As BigInteger = 15777216

Dim negativeHex As String = negativeNumber.ToString("X")
Dim positiveHex As string = positiveNumber.ToString("X")

Dim negativeNumber2, positiveNumber2 As BigInteger 
negativeNumber2 = BigInteger.Parse(negativeHex, 
                                   NumberStyles.HexNumber)
positiveNumber2 = BigInteger.Parse(positiveHex,
                                   NumberStyles.HexNumber)

Console.WriteLine("Converted {0:N0} to {1} back to {2:N0}.", 
                   negativeNumber, negativeHex, negativeNumber2)                                         
Console.WriteLine("Converted {0:N0} to {1} back to {2:N0}.", 
                   positiveNumber, positiveHex, positiveNumber2)                                         
' The example displays the following output:
'       Converted -1,000,000 to F0BDC0 back to -1,000,000.
'       Converted 15,777,216 to 0F0BDC0 back to 15,777,216.

但是,通过调用其他整型类型的 ToString 方法或包含 toBase 参数的 ToString 方法的重载创建的十六进制字符串并不表示值或源数据类型的符号,其中的十六进制已派生字符串。However, the hexadecimal strings created by calling the ToString methods of the other integral types or the overloads of the ToString method that include a toBase parameter do not indicate the sign of the value or the source data type from which the hexadecimal string was derived. 成功实例化此类字符串的 BigInteger 值需要一些额外的逻辑。Successfully instantiating a BigInteger value from such a string requires some additional logic. 下面的示例提供了一个可能的实现。The following example provides one possible implementation.

using System;
using System.Globalization;
using System.Numerics;

public struct HexValue
{
   public int Sign;
   public string Value;
}

public class Example
{
   public static void Main()
   {
      uint positiveNumber = 4039543321;
      int negativeNumber = -255423975;

      // Convert the numbers to hex strings.
      HexValue hexValue1, hexValue2;
      hexValue1.Value = positiveNumber.ToString("X");
      hexValue1.Sign = Math.Sign(positiveNumber);
      
      hexValue2.Value = Convert.ToString(negativeNumber, 16);
      hexValue2.Sign = Math.Sign(negativeNumber);
      
      // Round-trip the hexadecimal values to BigInteger values.
      string hexString;
      BigInteger positiveBigInt, negativeBigInt;
      
      hexString = (hexValue1.Sign == 1 ? "0" : "") + hexValue1.Value;
      positiveBigInt = BigInteger.Parse(hexString, NumberStyles.HexNumber);      
      Console.WriteLine("Converted {0} to {1} and back to {2}.", 
                        positiveNumber, hexValue1.Value, positiveBigInt);

      hexString = (hexValue2.Sign == 1 ? "0" : "") + hexValue2.Value;
      negativeBigInt = BigInteger.Parse(hexString, NumberStyles.HexNumber);      
      Console.WriteLine("Converted {0} to {1} and back to {2}.", 
                        negativeNumber, hexValue2.Value, negativeBigInt);
   }
}
// The example displays the following output:
//       Converted 4039543321 to F0C68A19 and back to 4039543321.
//       Converted -255423975 to f0c68a19 and back to -255423975.
Imports System.Globalization
Imports System.Numerics

Public Structure HexValue
   Public Sign As Integer
   Public Value As String
End Structure
   
Module Example
   Public Sub Main()
      Dim positiveNumber As UInteger = 4039543321
      Dim negativeNumber As Integer = -255423975

      ' Convert the numbers to hex strings.
      Dim hexValue1, hexValue2 As HexValue
      hexValue1.Value = positiveNumber.ToString("X")
      hexValue1.Sign = Math.Sign(positiveNumber)
      
      hexValue2.Value = Convert.ToString(negativeNumber, 16)
      hexValue2.Sign = Math.Sign(negativeNumber)
      
      ' Round-trip the hexadecimal values to BigInteger values.
      Dim hexString As String
      Dim positiveBigInt, negativeBigInt As BigInteger
      
      hexString = CStr(IIf(hexValue1.Sign = 1, "0", "")) + hexValue1.Value
      positiveBigInt = BigInteger.Parse(hexString, NumberStyles.HexNumber)      
      Console.WriteLine("Converted {0} to {1} and back to {2}.", 
                        positiveNumber, hexValue1.Value, positiveBigInt)

      hexString = CStr(IIf(hexValue2.Sign = 1, "0", "")) + hexValue2.Value
      negativeBigInt = BigInteger.Parse(hexString, NumberStyles.HexNumber)      
      Console.WriteLine("Converted {0} to {1} and back to {2}.", 
                        negativeNumber, hexValue2.Value, negativeBigInt)

   End Sub
End Module
' The example displays the following output:
'       Converted 4039543321 to F0C68A19 and back to 4039543321.
'       Converted -255423975 to f0c68a19 and back to -255423975.

构造函数

BigInteger(Byte[])

使用字节数组中的值初始化 BigInteger 结构的新实例。Initializes a new instance of the BigInteger structure using the values in a byte array.

BigInteger(Decimal)

使用 BigInteger 值初始化 Decimal 结构的新实例。Initializes a new instance of the BigInteger structure using a Decimal value.

BigInteger(Double)

使用双精度浮点值初始化 BigInteger 结构的新实例。Initializes a new instance of the BigInteger structure using a double-precision floating-point value.

BigInteger(Int32)

使用 32 位带符号整数值初始化 BigInteger 结构的新实例。Initializes a new instance of the BigInteger structure using a 32-bit signed integer value.

BigInteger(Int64)

使用 64 位带符号整数值初始化 BigInteger 结构的新实例。Initializes a new instance of the BigInteger structure using a 64-bit signed integer value.

BigInteger(ReadOnlySpan<Byte>, Boolean, Boolean)

使用字节的只读范围中的值初始化 BigInteger 结构的新实例,并选择性地指示符号编码和字节排序方式顺序。Initializes a new instance of the BigInteger structure using the values in a read-only span of bytes, and optionally indicating the signing encoding and the endianness byte order.

BigInteger(Single)

使用单精度浮点值初始化 BigInteger 结构的新实例。Initializes a new instance of the BigInteger structure using a single-precision floating-point value.

BigInteger(UInt32)

使用 32 位无符号整数值初始化 BigInteger 结构的新实例。Initializes a new instance of the BigInteger structure using an unsigned 32-bit integer value.

BigInteger(UInt64)

使用 64 位无符号整数值初始化 BigInteger 结构的新实例。Initializes a new instance of the BigInteger structure with an unsigned 64-bit integer value.

属性

IsEven

指示当前 BigInteger 对象的值是否是偶数。Indicates whether the value of the current BigInteger object is an even number.

IsOne

指示当前 BigInteger 对象的值是否是 OneIndicates whether the value of the current BigInteger object is One.

IsPowerOfTwo

指示当前 BigInteger 对象的值是否是 2 的幂。Indicates whether the value of the current BigInteger object is a power of two.

IsZero

指示当前 BigInteger 对象的值是否是 ZeroIndicates whether the value of the current BigInteger object is Zero.

MinusOne

获取一个表示数字负一 (-1) 的值。Gets a value that represents the number negative one (-1).

One

获取一个表示数字一 (1) 的值。Gets a value that represents the number one (1).

Sign

获取一个数字,该数字指示当前 BigInteger 对象的符号(负、正或零)。Gets a number that indicates the sign (negative, positive, or zero) of the current BigInteger object.

Zero

获取一个表示数字 0(零)的值。Gets a value that represents the number 0 (zero).

方法

Abs(BigInteger)

获取 BigInteger 对象的绝对值。Gets the absolute value of a BigInteger object.

Add(BigInteger, BigInteger)

将两个 BigInteger 值相加,并返回结果。Adds two BigInteger values and returns the result.

Compare(BigInteger, BigInteger)

比较两个 BigInteger 值,并返回一个整数,该整数指示第一个值是小于、等于还是大于第二个值。Compares two BigInteger values and returns an integer that indicates whether the first value is less than, equal to, or greater than the second value.

CompareTo(BigInteger)

将此实例与另一个 BigInteger 进行比较,并返回一个整数,该整数指示此实例的值是小于、等于还是大于指定对象的值。Compares this instance to a second BigInteger and returns an integer that indicates whether the value of this instance is less than, equal to, or greater than the value of the specified object.

CompareTo(Int64)

将此实例与 64 位带符号整数进行比较,并返回一个整数,该整数指示此实例的值是小于、等于还是大于 64 位带符号整数的值。Compares this instance to a signed 64-bit integer and returns an integer that indicates whether the value of this instance is less than, equal to, or greater than the value of the signed 64-bit integer.

CompareTo(Object)

将此实例与指定对象进行比较,并返回一个整数,该整数指示此实例的值是小于、等于还是大于指定对象的值。Compares this instance to a specified object and returns an integer that indicates whether the value of this instance is less than, equal to, or greater than the value of the specified object.

CompareTo(UInt64)

将此实例与 64 位无符号整数进行比较,并返回一个整数,该整数指示此实例的值是小于、等于还是大于 64 位无符号整数的值。Compares this instance to an unsigned 64-bit integer and returns an integer that indicates whether the value of this instance is less than, equal to, or greater than the value of the unsigned 64-bit integer.

Divide(BigInteger, BigInteger)

用另一个值除 BigInteger 值并返回结果。Divides one BigInteger value by another and returns the result.

DivRem(BigInteger, BigInteger, BigInteger)

用另一个值除一个 BigInteger 值,返回结果,并在输出参数中返回余数。Divides one BigInteger value by another, returns the result, and returns the remainder in an output parameter.

Equals(BigInteger)

返回一个值,该值指示当前实例与指定的 BigInteger 对象是否具有相同的值。Returns a value that indicates whether the current instance and a specified BigInteger object have the same value.

Equals(Int64)

返回一个值,该值指示当前实例与 64 位带符号整数是否具有相同的值。Returns a value that indicates whether the current instance and a signed 64-bit integer have the same value.

Equals(Object)

返回一个值,该值指示当前实例与指定的对象是否具有相同的值。Returns a value that indicates whether the current instance and a specified object have the same value.

Equals(UInt64)

返回一个值,该值指示当前实例与 64 位无符号整数是否具有相同的值。Returns a value that indicates whether the current instance and an unsigned 64-bit integer have the same value.

GetByteCount(Boolean)

获取将由 ToByteArray(Boolean, Boolean)TryWriteBytes(Span<Byte>, Int32, Boolean, Boolean) 输出的字节数。Gets the number of bytes that will be output by ToByteArray(Boolean, Boolean) and TryWriteBytes(Span<Byte>, Int32, Boolean, Boolean).

GetHashCode()

返回当前 BigInteger 对象的哈希代码。Returns the hash code for the current BigInteger object.

GreatestCommonDivisor(BigInteger, BigInteger)

查找两个 BigInteger 值的最大公约数。Finds the greatest common divisor of two BigInteger values.

Log(BigInteger)

返回指定数字的自然对数(底为 e)。Returns the natural (base e) logarithm of a specified number.

Log(BigInteger, Double)

返回指定数字在使用指定底时的对数。Returns the logarithm of a specified number in a specified base.

Log10(BigInteger)

返回指定数字以 10 为底的对数。Returns the base 10 logarithm of a specified number.

Max(BigInteger, BigInteger)

返回两个 BigInteger 值中的较大者。Returns the larger of two BigInteger values.

Min(BigInteger, BigInteger)

返回两个 BigInteger 值中的较小者。Returns the smaller of two BigInteger values.

ModPow(BigInteger, BigInteger, BigInteger)

对以某个数为底、以另一个数为指数的幂执行模数除法。Performs modulus division on a number raised to the power of another number.

Multiply(BigInteger, BigInteger)

返回两个 BigInteger 值的乘积。Returns the product of two BigInteger values.

Negate(BigInteger)

对指定的 BigInteger 值求反。Negates a specified BigInteger value.

Parse(ReadOnlySpan<Char>, NumberStyles, IFormatProvider)

以指定的样式将包含在指定的字符只读范围内的数字表示形式转换为其 BigInteger 等效项。Converts the representation of a number, contained in the specified read-only span of characters, in a specified style to its BigInteger equivalent.

Parse(String)

将数字的字符串表示形式转换为它的等效 BigInteger 表示形式。Converts the string representation of a number to its BigInteger equivalent.

Parse(String, IFormatProvider)

将指定的区域性特定格式的数字字符串表示形式转换为它的等效 BigIntegerConverts the string representation of a number in a specified culture-specific format to its BigInteger equivalent.

Parse(String, NumberStyles)

将指定样式的数字的字符串表示形式转换为它的等效 BigIntegerConverts the string representation of a number in a specified style to its BigInteger equivalent.

Parse(String, NumberStyles, IFormatProvider)

将指定样式和区域性特定格式的数字的字符串表示形式转换为它的等效 BigIntegerConverts the string representation of a number in a specified style and culture-specific format to its BigInteger equivalent.

Pow(BigInteger, Int32)

求以 BigInteger 值为底、以指定的值为指数的幂。Raises a BigInteger value to the power of a specified value.

Remainder(BigInteger, BigInteger)

对两个 BigInteger 值执行整除并返回余数。Performs integer division on two BigInteger values and returns the remainder.

Subtract(BigInteger, BigInteger)

从另一个值中减去一个 BigInteger 值并返回结果。Subtracts one BigInteger value from another and returns the result.

ToByteArray()

BigInteger 值转换为字节数组。Converts a BigInteger value to a byte array.

ToByteArray(Boolean, Boolean)

使用尽可能少的字节数返回此 BigInteger 的值作为字节数组。Returns the value of this BigInteger as a byte array using the fewest number of bytes possible. 如果值为零,则返回一个字节(其元素为 0x00)的数组。If the value is zero, returns an array of one byte whose element is 0x00.

ToString()

将当前 BigInteger 对象的数值转换为其等效字符串表示形式。Converts the numeric value of the current BigInteger object to its equivalent string representation.

ToString(IFormatProvider)

使用指定的区域性特定格式设置信息将当前 BigInteger 对象的数值转换为它的等效字符串表示形式。Converts the numeric value of the current BigInteger object to its equivalent string representation by using the specified culture-specific formatting information.

ToString(String)

使用指定的格式将当前 BigInteger 对象的数值转换为它的等效字符串表示形式。Converts the numeric value of the current BigInteger object to its equivalent string representation by using the specified format.

ToString(String, IFormatProvider)

使用指定的格式和区域性特定格式信息将当前 BigInteger 对象的数值转换为它的等效字符串表示形式。Converts the numeric value of the current BigInteger object to its equivalent string representation by using the specified format and culture-specific format information.

TryFormat(Span<Char>, Int32, ReadOnlySpan<Char>, IFormatProvider)

将此大整数实例格式设置到一个字符范围内。Formats this big integer instance into a span of characters.

TryParse(ReadOnlySpan<Char>, BigInteger)

尝试将指定的字符只读范围中包含的数字的表示形式转换为其 BigInteger 等效项,并返回一个指示转换是否成功的值。Tries to convert the representation of a number contained in the specified read-only character span, to its BigInteger equivalent, and returns a value that indicates whether the conversion succeeded.

TryParse(ReadOnlySpan<Char>, NumberStyles, IFormatProvider, BigInteger)

尝试将数字的字符串表示形式转换为它的等效 BigInteger,并返回一个指示转换是否成功的值。Tries to convert the string representation of a number to its BigInteger equivalent, and returns a value that indicates whether the conversion succeeded.

TryParse(String, BigInteger)

尝试将数字的字符串表示形式转换为它的等效 BigInteger,并返回一个指示转换是否成功的值。Tries to convert the string representation of a number to its BigInteger equivalent, and returns a value that indicates whether the conversion succeeded.

TryParse(String, NumberStyles, IFormatProvider, BigInteger)

尝试将指定样式和区域性特定格式的数字的字符串表示形式转换为其 BigInteger 等效项,并返回一个指示转换是否成功的值。Tries to convert the string representation of a number in a specified style and culture-specific format to its BigInteger equivalent, and returns a value that indicates whether the conversion succeeded.

TryWriteBytes(Span<Byte>, Int32, Boolean, Boolean)

使用尽可能少的字节数将此 BigInteger 的值复制为小端二进制补码字节。Copies the value of this BigInteger as little-endian twos-complement bytes, using the fewest number of bytes possible. 如果值为零,则输入其元素为 0x00 的字节。If the value is zero, outputs one byte whose element is 0x00.

操作员

Addition(BigInteger, BigInteger)

将两个指定的 BigInteger 对象的值相加。Adds the values of two specified BigInteger objects.

BitwiseAnd(BigInteger, BigInteger)

对两个 BigInteger 值执行按位 And 运算。Performs a bitwise And operation on two BigInteger values.

BitwiseOr(BigInteger, BigInteger)

对两个 BigInteger 值执行按位 Or 运算。Performs a bitwise Or operation on two BigInteger values.

Decrement(BigInteger)

BigInteger 值减 1。Decrements a BigInteger value by 1.

Division(BigInteger, BigInteger)

通过使用整除,将指定的 BigInteger 值除以另一个指定的 BigInteger 值。Divides a specified BigInteger value by another specified BigInteger value by using integer division.

Equality(BigInteger, BigInteger)

返回一个值,该值指示两个 BigInteger 对象的值是否相等。Returns a value that indicates whether the values of two BigInteger objects are equal.

Equality(BigInteger, Int64)

返回一个值,该值指示 BigInteger 值与带符号长整数值是否相等。Returns a value that indicates whether a BigInteger value and a signed long integer value are equal.

Equality(BigInteger, UInt64)

返回一个值,该值指示 BigInteger 值与无符号长整数值是否相等。Returns a value that indicates whether a BigInteger value and an unsigned long integer value are equal.

Equality(Int64, BigInteger)

返回一个值,该值指示带符号长整数值与 BigInteger 值是否相等。Returns a value that indicates whether a signed long integer value and a BigInteger value are equal.

Equality(UInt64, BigInteger)

返回一个值,该值指示无符号长整数值与 BigInteger 值是否相等。Returns a value that indicates whether an unsigned long integer value and a BigInteger value are equal.

ExclusiveOr(BigInteger, BigInteger)

对两个 BigInteger 值执行按位异 Or (XOr) 运算。Performs a bitwise exclusive Or (XOr) operation on two BigInteger values.

Explicit(BigInteger to Byte)

定义从 BigInteger 对象到无符号字节值的显式转换。Defines an explicit conversion of a BigInteger object to an unsigned byte value.

Explicit(BigInteger to Decimal)

定义从 BigInteger 对象到 Decimal 值的显式转换。Defines an explicit conversion of a BigInteger object to a Decimal value.

Explicit(BigInteger to Double)

定义从 BigInteger 对象到 Double 值的显式转换。Defines an explicit conversion of a BigInteger object to a Double value.

Explicit(BigInteger to Int16)

定义从 BigInteger 对象到 16 位带符号整数值的显式转换。Defines an explicit conversion of a BigInteger object to a 16-bit signed integer value.

Explicit(BigInteger to Int32)

定义从 BigInteger 对象到 32 位带符号整数值的显式转换。Defines an explicit conversion of a BigInteger object to a 32-bit signed integer value.

Explicit(BigInteger to Int64)

定义从 BigInteger 对象到 64 位带符号整数值的显式转换。Defines an explicit conversion of a BigInteger object to a 64-bit signed integer value.

Explicit(BigInteger to SByte)

定义从 BigInteger 对象到 8 位带符号值的显式转换。Defines an explicit conversion of a BigInteger object to a signed 8-bit value.

此 API 不兼容 CLS。This API is not CLS-compliant. 符合的替代方法是 Int16The compliant alternative is Int16.

Explicit(BigInteger to Single)

定义从 BigInteger 对象到单精度浮点值的显式转换。Defines an explicit conversion of a BigInteger object to a single-precision floating-point value.

Explicit(BigInteger to UInt16)

定义从 BigInteger 对象到 16 位无符号整数值的显式转换。Defines an explicit conversion of a BigInteger object to an unsigned 16-bit integer value.

此 API 不兼容 CLS。This API is not CLS-compliant. 符合的替代方法是 Int32The compliant alternative is Int32.

Explicit(BigInteger to UInt32)

定义从 BigInteger 对象到 32 位无符号整数值的显式转换。Defines an explicit conversion of a BigInteger object to an unsigned 32-bit integer value.

此 API 不兼容 CLS。This API is not CLS-compliant. 符合的替代方法是 Int64The compliant alternative is Int64.

Explicit(BigInteger to UInt64)

定义从 BigInteger 对象到 64 位无符号整数值的显式转换。Defines an explicit conversion of a BigInteger object to an unsigned 64-bit integer value.

此 API 不兼容 CLS。This API is not CLS-compliant. 符合的替代方法是 DoubleThe compliant alternative is Double.

Explicit(Decimal to BigInteger)

定义从 Decimal 对象到 BigInteger 值的显式转换。Defines an explicit conversion of a Decimal object to a BigInteger value.

Explicit(Double to BigInteger)

定义从 Double 值到 BigInteger 值的显式转换。Defines an explicit conversion of a Double value to a BigInteger value.

Explicit(Single to BigInteger)

定义从 Single 值到 BigInteger 值的显式转换。Defines an explicit conversion of a Single value to a BigInteger value.

GreaterThan(BigInteger, BigInteger)

返回一个值,该值指示 BigInteger 值是否大于另一个 BigInteger 值。Returns a value that indicates whether a BigInteger value is greater than another BigInteger value.

GreaterThan(BigInteger, Int64)

返回一个值,该值指示 BigInteger 是否大于 64 位带符号整数值。Returns a value that indicates whether a BigInteger is greater than a 64-bit signed integer value.

GreaterThan(BigInteger, UInt64)

返回一个值,该值指示 BigInteger 值是否大于 64 位无符号整数。Returns a value that indicates whether a BigInteger value is greater than a 64-bit unsigned integer.

GreaterThan(Int64, BigInteger)

返回一个值,该值指示 64 位带符号整数是否大于 BigInteger 值。Returns a value that indicates whether a 64-bit signed integer is greater than a BigInteger value.

GreaterThan(UInt64, BigInteger)

返回一个值,该值指示 BigInteger 值是否大于 64 位无符号整数。Returns a value that indicates whether a BigInteger value is greater than a 64-bit unsigned integer.

GreaterThanOrEqual(BigInteger, BigInteger)

返回一个值,该值指示 BigInteger 值是否大于等于另一个 BigInteger 值。Returns a value that indicates whether a BigInteger value is greater than or equal to another BigInteger value.

GreaterThanOrEqual(BigInteger, Int64)

返回一个值,该值指示 BigInteger 值是否大于等于 64 位带符号整数值。Returns a value that indicates whether a BigInteger value is greater than or equal to a 64-bit signed integer value.

GreaterThanOrEqual(BigInteger, UInt64)

返回一个值,该值指示 BigInteger 值是否大于等于 64 位无符号整数值。Returns a value that indicates whether a BigInteger value is greater than or equal to a 64-bit unsigned integer value.

GreaterThanOrEqual(Int64, BigInteger)

返回一个值,该值指示 64 位带符号整数是否大于等于 BigInteger 值。Returns a value that indicates whether a 64-bit signed integer is greater than or equal to a BigInteger value.

GreaterThanOrEqual(UInt64, BigInteger)

返回一个值,该值指示 64 位无符号整数是否大于等于 BigInteger 值。Returns a value that indicates whether a 64-bit unsigned integer is greater than or equal to a BigInteger value.

Implicit(Byte to BigInteger)

定义从无符号字节到 BigInteger 值的隐式转换。Defines an implicit conversion of an unsigned byte to a BigInteger value.

Implicit(Int16 to BigInteger)

定义从 16 位带符号整数到 BigInteger 值的隐式转换。Defines an implicit conversion of a signed 16-bit integer to a BigInteger value.

Implicit(Int32 to BigInteger)

定义从 32 位带符号整数到 BigInteger 值的隐式转换。Defines an implicit conversion of a signed 32-bit integer to a BigInteger value.

Implicit(Int64 to BigInteger)

定义从 64 位带符号整数到 BigInteger 值的隐式转换。Defines an implicit conversion of a signed 64-bit integer to a BigInteger value.

Implicit(SByte to BigInteger)

定义从 8 位带符号整数到 BigInteger 值的隐式转换。Defines an implicit conversion of an 8-bit signed integer to a BigInteger value.

此 API 不兼容 CLS。This API is not CLS-compliant. 符合的替代方法是 BigInteger(Int32)The compliant alternative is BigInteger(Int32).

Implicit(UInt16 to BigInteger)

定义从 16 位无符号整数到 BigInteger 值的隐式转换。Defines an implicit conversion of a 16-bit unsigned integer to a BigInteger value.

此 API 不兼容 CLS。This API is not CLS-compliant. 符合的替代方法是 Implicit(Int32 to BigInteger)The compliant alternative is Implicit(Int32 to BigInteger).

Implicit(UInt32 to BigInteger)

定义从 32 位无符号整数到 BigInteger 值的隐式转换。Defines an implicit conversion of a 32-bit unsigned integer to a BigInteger value.

此 API 不兼容 CLS。This API is not CLS-compliant. 符合的替代方法是 Implicit(Int64 to BigInteger)The compliant alternative is Implicit(Int64 to BigInteger).

Implicit(UInt64 to BigInteger)

定义从 64 位无符号整数到 BigInteger 值的隐式转换。Defines an implicit conversion of a 64-bit unsigned integer to a BigInteger value.

此 API 不兼容 CLS。This API is not CLS-compliant. 符合的替代方法是 DoubleThe compliant alternative is Double.

Increment(BigInteger)

BigInteger 值加 1。Increments a BigInteger value by 1.

Inequality(BigInteger, BigInteger)

返回一个值,该值指示两个 BigInteger 对象是否具有不同的值。Returns a value that indicates whether two BigInteger objects have different values.

Inequality(BigInteger, Int64)

返回一个值,该值指示 BigInteger 值与 64 位带符号整数是否不相等。Returns a value that indicates whether a BigInteger value and a 64-bit signed integer are not equal.

Inequality(BigInteger, UInt64)

返回一个值,该值指示 BigInteger 值与 64 位无符号整数是否不相等。Returns a value that indicates whether a BigInteger value and a 64-bit unsigned integer are not equal.

Inequality(Int64, BigInteger)

返回一个值,该值指示 64 位带符号整数与 BigInteger 值是否不相等。Returns a value that indicates whether a 64-bit signed integer and a BigInteger value are not equal.

Inequality(UInt64, BigInteger)

返回一个值,该值指示 64 位无符号整数与 BigInteger 值是否不相等。Returns a value that indicates whether a 64-bit unsigned integer and a BigInteger value are not equal.

LeftShift(BigInteger, Int32)

BigInteger 值向左移动指定的位数。Shifts a BigInteger value a specified number of bits to the left.

LessThan(BigInteger, BigInteger)

返回一个值,该值指示 BigInteger 值是否小于另一个 BigInteger 值。Returns a value that indicates whether a BigInteger value is less than another BigInteger value.

LessThan(BigInteger, Int64)

返回一个值,该值指示 BigInteger 值是否小于 64 位带符号整数。Returns a value that indicates whether a BigInteger value is less than a 64-bit signed integer.

LessThan(BigInteger, UInt64)

返回一个值,该值指示 BigInteger 值是否小于 64 位无符号整数。Returns a value that indicates whether a BigInteger value is less than a 64-bit unsigned integer.

LessThan(Int64, BigInteger)

返回一个值,该值指示 64 位带符号整数是否小于 BigInteger 值。Returns a value that indicates whether a 64-bit signed integer is less than a BigInteger value.

LessThan(UInt64, BigInteger)

返回一个值,该值指示 64 位无符号整数是否小于 BigInteger 值。Returns a value that indicates whether a 64-bit unsigned integer is less than a BigInteger value.

LessThanOrEqual(BigInteger, BigInteger)

返回一个值,该值指示 BigInteger 值是否小于等于另一个 BigInteger 值。Returns a value that indicates whether a BigInteger value is less than or equal to another BigInteger value.

LessThanOrEqual(BigInteger, Int64)

返回一个值,该值指示 BigInteger 值是否小于等于 64 位带符号整数。Returns a value that indicates whether a BigInteger value is less than or equal to a 64-bit signed integer.

LessThanOrEqual(BigInteger, UInt64)

返回一个值,该值指示 BigInteger 值是否小于等于 64 位无符号整数。Returns a value that indicates whether a BigInteger value is less than or equal to a 64-bit unsigned integer.

LessThanOrEqual(Int64, BigInteger)

返回一个值,该值指示 64 位带符号整数是否小于等于 BigInteger 值。Returns a value that indicates whether a 64-bit signed integer is less than or equal to a BigInteger value.

LessThanOrEqual(UInt64, BigInteger)

返回一个值,该值指示 64 位无符号整数是否小于等于 BigInteger 值。Returns a value that indicates whether a 64-bit unsigned integer is less than or equal to a BigInteger value.

Modulus(BigInteger, BigInteger)

返回两个指定 BigInteger 值相除所得的余数。Returns the remainder that results from division with two specified BigInteger values.

Multiply(BigInteger, BigInteger)

两个指定的 BigInteger 值相乘。Multiplies two specified BigInteger values.

OnesComplement(BigInteger)

返回 BigInteger 值的按位二进制反码。Returns the bitwise one's complement of a BigInteger value.

RightShift(BigInteger, Int32)

BigInteger 值向右移动指定的位数。Shifts a BigInteger value a specified number of bits to the right.

Subtraction(BigInteger, BigInteger)

从另一个 BigInteger 值中减去 BigInteger 值。Subtracts a BigInteger value from another BigInteger value.

UnaryNegation(BigInteger)

对指定的 BigInteger 值求反。Negates a specified BigInteger value.

UnaryPlus(BigInteger)

返回 BigInteger 操作数的值。Returns the value of the BigInteger operand. (操作数的符号不变。)(The sign of the operand is unchanged.)

显式界面实现

IComparable.CompareTo(Object)

将此实例与指定对象进行比较,并返回一个整数,该整数指示此实例的值是小于、等于还是大于指定对象的值。Compares this instance to a specified object and returns an integer that indicates whether the value of this instance is less than, equal to, or greater than the value of the specified object.

适用于