Single.Equals 方法

定義

命名空間:: System

組件:: mscorlib.dll, System.Runtime.dll

組件:: netstandard.dll, System.Runtime.dll

組件:: System.Runtime.dll

組件:: mscorlib.dll

組件:: netstandard.dll

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

回傳一個值，表示兩個的 Single 實例是否代表相同值。

多載

名稱	Description
Equals(Object)	傳回值，指出這個實例是否等於指定的物件。
Equals(Single)	回傳一個值，表示該實例與指定 Single 物件是否代表相同值。

Equals(Object)

來源:: Single.cs

來源:: Single.cs

來源:: Single.cs

來源:: Single.cs

來源:: Single.cs

傳回值，指出這個實例是否等於指定的物件。

public:
 override bool Equals(System::Object ^ obj);

public override bool Equals(object obj);

public override bool Equals(object? obj);

override this.Equals : obj -> bool

Public Overrides Function Equals (obj As Object) As Boolean

參數

obj: Object

一個可以與此事比較的物件。

傳回

Boolean

true 若 obj 是的 Single 一個實例，且等於該實例的值;否則， false。

範例

以下程式碼範例示範了此 Equals 方法。

obj1 = (Single)500;
if (a.Equals(obj1)) {
    Console.WriteLine("The value type and reference type values are equal.");
}

let obj1 = single 500
if a.Equals obj1 then
    printfn "The value type and reference type values are equal."

Obj1 = CType(500, Single)

If A.Equals(Obj1) Then
    Console.WriteLine("The value type and reference type values are equal.")
End If

備註

Equals方法應該謹慎使用，因為兩個明顯相等的值可能會因為兩個值的不同精確度而不相等。下列範例報告 Single 的值為 .3333，而將 1 除以 3 所得到的 Single 不相等。

// Initialize two floats with apparently identical values
float float1 = .33333f;
object float2 = 1/3;
// Compare them for equality
Console.WriteLine(float1.Equals(float2));    // displays false

// Initialize two floats with apparently identical values
let float1 = 0.33333f
let float2 = box (1f / 3f)
// Compare them for equality
printfn $"{float1.Equals float2}"    // displays false

' Initialize two singles with apparently identical values
Dim single1 As Single = .33333
Dim single2 As Object = 1/3
' Compare them for equality
Console.WriteLine(single1.Equals(single2))    ' displays False

一種推薦的技巧是定義兩個值之間的可接受差距（例如其中一方值的0.01%）。如果兩個值之間的差異絕對值小於或等於該邊界，則差異可能是由於有效位數的差異，因此，這些值可能會相等。下列範例會使用這項技術來比較 .33333 和 1/3，前述 Single 程式碼範例發現兩個值不相等。

// Initialize two floats with apparently identical values
float float1 = .33333f;
object float2 = (float) 1/3;
// Define the tolerance for variation in their values
float difference = Math.Abs(float1 * .0001f);

// Compare the values
// The output to the console indicates that the two values are equal
if (Math.Abs(float1 - (float) float2) <= difference)
   Console.WriteLine("float1 and float2 are equal.");
else
   Console.WriteLine("float1 and float2 are unequal.");

// Initialize two floats with apparently identical values
let float1 = 0.33333f
let float2 = box (1f / 3f)
// Define the tolerance for variation in their values
let difference = abs (float1 * 0.0001f)

// Compare the values
// The output to the console indicates that the two values are equal
if abs (float1 - (float2 :?> float32)) <= difference then
    printfn "float1 and float2 are equal."
else
    printfn "float1 and float2 are unequal."

' Initialize two singles with apparently identical values
Dim single1 As Single = .33333
Dim single2 As Object = 1/3
' Define the tolerance for variation in their values
Dim difference As Single = Math.Abs(single1 * .0001f)

' Compare the values
' The output to the console indicates that the two values are equal
If Math.Abs(single1 - CSng(single2)) <= difference Then
   Console.WriteLine("single1 and single2 are equal.")
Else
   Console.WriteLine("single1 and single2 are unequal.")
End If

在此情況下，數值相等。

Note

由於 Epsilon 定義範圍接近零之正值的最小運算式，因此差異的邊界必須大於 Epsilon。通常，它是 Epsilon的好幾倍。

浮點數超出文件精度的精確度，取決於 .NET 框架的實作與版本。因此，兩個特定數字的比較可能會因 .NET 框架內部表示的精確度而改變。

給呼叫者的注意事項

編譯器過載解析可能解釋兩種 Equals(Object) 方法過載行為上的表面差異。如果定義了參數與 a obj 之間的Single隱式轉換，且參數未被指定為 Object，編譯器可能會執行隱式轉換並呼叫該Equals(Single)方法。否則，他們會呼叫該Equals(Object)方法，且當其false參數不是obj值時，該方法總是回傳Single。以下範例說明兩種方法過載行為的差異。除了 Visual Basic 中的 Double 以及 C# 中的 Decimal 和 Double 外，所有原始數值類型皆為 true，因為編譯器會自動進行擴寬轉換並呼叫 Equals(Single) 方法;而第二次比較則回傳 false，因為編譯器呼叫 Equals(Object) 方法。

using System;

public class Example2
{
   static float value = 112;

   public static void Main()
   {
      byte byte1= 112;
      Console.WriteLine("value = byte1: {0,16}", value.Equals(byte1));
      TestObjectForEquality(byte1);

      short short1 = 112;
      Console.WriteLine("value = short1: {0,16}", value.Equals(short1));
      TestObjectForEquality(short1);

      int int1 = 112;
      Console.WriteLine("value = int1: {0,18}", value.Equals(int1));
      TestObjectForEquality(int1);

      long long1 = 112;
      Console.WriteLine("value = long1: {0,17}", value.Equals(long1));
      TestObjectForEquality(long1);

      sbyte sbyte1 = 112;
      Console.WriteLine("value = sbyte1: {0,16}", value.Equals(sbyte1));
      TestObjectForEquality(sbyte1);

      ushort ushort1 = 112;
      Console.WriteLine("value = ushort1: {0,16}", value.Equals(ushort1));
      TestObjectForEquality(ushort1);

      uint uint1 = 112;
      Console.WriteLine("value = uint1: {0,18}", value.Equals(uint1));
      TestObjectForEquality(uint1);

      ulong ulong1 = 112;
      Console.WriteLine("value = ulong1: {0,17}", value.Equals(ulong1));
      TestObjectForEquality(ulong1);

      decimal dec1 = 112m;
      Console.WriteLine("value = dec1: {0,21}", value.Equals(dec1));
      TestObjectForEquality(dec1);

      double dbl1 = 112;
      Console.WriteLine("value = dbl1: {0,20}", value.Equals(dbl1));
      TestObjectForEquality(dbl1);
   }

   private static void TestObjectForEquality(Object obj)
   {
      Console.WriteLine("{0} ({1}) = {2} ({3}): {4}\n",
                        value, value.GetType().Name,
                        obj, obj.GetType().Name,
                        value.Equals(obj));
   }
}
// The example displays the following output:
//       value = byte1:             True
//       112 (Single) = 112 (Byte): False
//
//       value = short1:             True
//       112 (Single) = 112 (Int16): False
//
//       value = int1:               True
//       112 (Single) = 112 (Int32): False
//
//       value = long1:              True
//       112 (Single) = 112 (Int64): False
//
//       value = sbyte1:             True
//       112 (Single) = 112 (SByte): False
//
//       value = ushort1:             True
//       112 (Single) = 112 (UInt16): False
//
//       value = uint1:               True
//       112 (Single) = 112 (UInt32): False
//
//       value = ulong1:              True
//       112 (Single) = 112 (UInt64): False
//
//       value = dec1:                 False
//       112 (Single) = 112 (Decimal): False
//
//       value = dbl1:                False
//       112 (Single) = 112 (Double): False

let value = 112f

let testObjectForEquality (obj: obj) =
    printfn $"{value} ({value.GetType().Name}) = {obj} ({obj.GetType().Name}): {value.Equals obj}\n"

[<EntryPoint>]
let main _ =
    let byte1= 112uy
    printfn $"value = byte1: {value.Equals byte1,16}"
    testObjectForEquality byte1

    let short1 = 112s
    printfn $"value = short1: {value.Equals short1,16}"
    testObjectForEquality short1

    let int1 = 112
    printfn $"value = int1: {value.Equals int1,18}"
    testObjectForEquality int1

    let long1 = 112L
    printfn $"value = long1: {value.Equals long1,17}"
    testObjectForEquality long1
    
    let sbyte1 = 112y
    printfn $"value = sbyte1: {value.Equals sbyte1,16}"
    testObjectForEquality sbyte1

    let ushort1 = 112us
    printfn $"value = ushort1: {value.Equals ushort1,16}"
    testObjectForEquality ushort1

    let uint1 = 112u
    printfn $"value = uint1: {value.Equals uint1,18}"
    testObjectForEquality uint1

    let ulong1 = 112uL
    printfn $"value = ulong1: {value.Equals ulong1,17}"
    testObjectForEquality ulong1
    
    let dec1 = 112m
    printfn $"value = dec1: {value.Equals dec1,21}"
    testObjectForEquality dec1

    let dbl1 = 112.
    printfn $"value = dbl1: {value.Equals dbl1,20}"
    testObjectForEquality dbl1
    0

// The example displays the following output:
//       value = byte1:             True
//       112 (Single) = 112 (Byte): False
//
//       value = short1:             True
//       112 (Single) = 112 (Int16): False
//
//       value = int1:               True
//       112 (Single) = 112 (Int32): False
//
//       value = long1:              True
//       112 (Single) = 112 (Int64): False
//
//       value = sbyte1:             True
//       112 (Single) = 112 (SByte): False
//
//       value = ushort1:             True
//       112 (Single) = 112 (UInt16): False
//
//       value = uint1:               True
//       112 (Single) = 112 (UInt32): False
//
//       value = ulong1:              True
//       112 (Single) = 112 (UInt64): False
//
//       value = dec1:                 False
//       112 (Single) = 112 (Decimal): False
//
//       value = dbl1:                False
//       112 (Single) = 112 (Double): False

Module Example2
   Dim value As Single = 112

   Public Sub Main()
      Dim byte1 As Byte = 112
      Console.WriteLine("value = byte1: {0,16}", value.Equals(byte1))
      TestObjectForEquality(byte1)

      Dim short1 As Short = 112
      Console.WriteLine("value = short1: {0,16}", value.Equals(short1))
      TestObjectForEquality(short1)

      Dim int1 As Integer = 112
      Console.WriteLine("value = int1: {0,18}", value.Equals(int1))
      TestObjectForEquality(int1)

      Dim long1 As Long = 112
      Console.WriteLine("value = long1: {0,17}", value.Equals(long1))
      TestObjectForEquality(long1)

      Dim sbyte1 As SByte = 112
      Console.WriteLine("value = sbyte1: {0,16}", value.Equals(sbyte1))
      TestObjectForEquality(sbyte1)

      Dim ushort1 As UShort = 112
      Console.WriteLine("value = ushort1: {0,16}", value.Equals(ushort1))
      TestObjectForEquality(ushort1)

      Dim uint1 As UInteger = 112
      Console.WriteLine("value = uint1: {0,18}", value.Equals(uint1))
      TestObjectForEquality(uint1)

      Dim ulong1 As ULong = 112
      Console.WriteLine("value = ulong1: {0,17}", value.Equals(ulong1))
      TestObjectForEquality(ulong1)

      Dim dec1 As Decimal = 112d
      Console.WriteLine("value = dec1: {0,20}", value.Equals(dec1))
      TestObjectForEquality(dec1)

      Dim dbl1 As Double = 112
      Console.WriteLine("value = dbl1: {0,20}", value.Equals(dbl1))
      TestObjectForEquality(dbl1)
   End Sub

   Private Sub TestObjectForEquality(obj As Object)
      Console.WriteLine("{0} ({1}) = {2} ({3}): {4}",
                        value, value.GetType().Name,
                        obj, obj.GetType().Name,
                        value.Equals(obj))
      Console.WriteLine()
   End Sub
End Module
' The example displays the following output:
'       value = byte1:             True
'       112 (Single) = 112 (Byte): False
'
'       value = short1:             True
'       112 (Single) = 112 (Int16): False
'
'       value = int1:               True
'       112 (Single) = 112 (Int32): False
'
'       value = long1:              True
'       112 (Single) = 112 (Int64): False
'
'       value = sbyte1:             True
'       112 (Single) = 112 (SByte): False
'
'       value = ushort1:             True
'       112 (Single) = 112 (UInt16): False
'
'       value = uint1:               True
'       112 (Single) = 112 (UInt32): False
'
'       value = ulong1:              True
'       112 (Single) = 112 (UInt64): False
'
'       value = dec1:                 True
'       112 (Single) = 112 (Decimal): False
'
'       value = dbl1:                False
'       112 (Single) = 112 (Double): False

另請參閱

CompareTo(Object)

適用於

Equals(Single)

來源:: Single.cs

來源:: Single.cs

來源:: Single.cs

來源:: Single.cs

來源:: Single.cs

回傳一個值，表示該實例與指定 Single 物件是否代表相同值。

public:
 virtual bool Equals(float obj);

public bool Equals(float obj);

override this.Equals : single -> bool

Public Function Equals (obj As Single) As Boolean

參數

obj: Single

一個可以與此事比較的物件。

傳回

Boolean

true若等obj於此實例;否則，。 false

實作

Equals(T)

備註

Single.Equals(Single) 方法實作了 System.IEquatable<T> 介面，且由於不需要將 Single.Equals(Object) 參數轉換成物件，因此比 obj 的效能稍微更好。

擴充轉換

根據您的程式設計語言，可能可以撰寫一個 Equals 方法，其中參數類型的位元數比實例類型少（或更窄）。這是可能的，因為某些程式語言會執行隱式擴大轉換，把參數表示成與實例具有相同位元數的類型。

例如，假設實體類型為 Single ，且參數類型為 Int32。 Microsoft C# 編譯程式會產生指示，將參數的值表示為 Single 對象，然後產生 Single.Equals(Single) 方法，以比較實例的值和參數的擴大表示法。

請參閱程式設計語言的檔，以判斷其編譯程式是否執行數值類型的隱含擴大轉換。如需詳細資訊，請參閱類型轉換數據表。

比較中的精確度

Equals方法應該謹慎使用，因為兩個明顯相等的值可能不相等，因為兩個值的精確度不同。下列範例報告 Single 的值為 .3333，而將 1 除以 3 所得到的 Single 不相等。

// Initialize two floats with apparently identical values
float float1 = .33333f;
float float2 = 1/3;
// Compare them for equality
Console.WriteLine(float1.Equals(float2));    // displays false

// Initialize two floats with apparently identical values
let float1 = 0.33333f
let float2 = 1f / 3f
// Compare them for equality
printfn $"{float1.Equals float2}"    // displays false

' Initialize two singles with apparently identical values
Dim single1 As Single = .33333
Dim single2 As Single = 1/3
' Compare them for equality
Console.WriteLine(single1.Equals(single2))    ' displays False

一種避免與比較相等相關的問題的比較技術，涉及定義兩個值之間可接受的差異邊界（例如其中一個值的 .01%）。如果兩個值之間的差異絕對值小於或等於該邊界，則差異可能是有效位數差異的結果，因此，這些值可能會相等。下列範例會使用這項技術來比較 .33333 和 1/3，這是前一個程式代碼範例發現不相等的兩 Single 個值。

// Initialize two floats with apparently identical values
float float1 = .33333f;
float float2 = (float) 1/3;
// Define the tolerance for variation in their values
float difference = Math.Abs(float1 * .0001f);

// Compare the values
// The output to the console indicates that the two values are equal
if (Math.Abs(float1 - float2) <= difference)
   Console.WriteLine("float1 and float2 are equal.");
else
   Console.WriteLine("float1 and float2 are unequal.");

// Initialize two floats with apparently identical values
let float1 = 0.33333f
let float2 = 1f / 3f
// Define the tolerance for variation in their values
let difference = abs (float1 * 0.0001f)

// Compare the values
// The output to the console indicates that the two values are equal
if abs (float1 - float2) <= difference then
    printfn "float1 and float2 are equal."
else
    printfn "float1 and float2 are unequal."

' Initialize two singles with apparently identical values
Dim single1 As Single = .33333
Dim single2 As Single = 1/3
' Define the tolerance for variation in their values
Dim difference As Single = Math.Abs(single1 * .0001f)

' Compare the values
' The output to the console indicates that the two values are equal
If Math.Abs(single1 - single2) <= difference Then
   Console.WriteLine("single1 and single2 are equal.")
Else
   Console.WriteLine("single1 and single2 are unequal.")
End If

在此情況下，數值相等。

Note

由於 Epsilon 定義範圍接近零之正值的最小運算式，因此差異的邊界必須大於 Epsilon。通常，它是 Epsilon的好幾倍。因此，建議您不要在比較Epsilon相等值時使用 Double 。

第二種技術，可避免與比較相等相關的問題，涉及比較兩個浮點數與某些絕對值之間的差異。如果差異小於或等於該絕對值，數位就會相等。如果某數字大於另一個，那麼這些數字不相等。執行這項作的其中一種方式是任意選取絕對值。不過，這是有問題的，因為可接受的差異邊界取決於值的大小 Single 。第二種方式會利用浮點格式的設計功能：兩個浮點值整數表示法中的 mantissa 元件之間的差異表示分隔兩個值的可能浮點值數目。例如，0.0 和 Epsilon 之間的差異是 1，因為在使用值為零的 Epsilon 時，Single 是最小可表示的值。下列範例會使用這項技術來比較 .33333 和 1/3，這是上一個程式代碼範例使用 Double 方法發現不相等的兩個 Equals(Single) 值。請注意，此範例會使用 BitConverter.GetBytes 和 BitConverter.ToInt32 方法，將單精度浮點數轉換成其整數表示法。

using System;

public class Example
{
   public static void Main()
   {
      float value1 = .1f * 10f;
      float value2 = 0f;
      for (int ctr = 0; ctr < 10; ctr++)
         value2 += .1f;
         
      Console.WriteLine($"{value1:R} = {value2:R}: {HasMinimalDifference(value1, value2, 1)}");
   }

   public static bool HasMinimalDifference(float value1, float value2, int units)
   {
      byte[] bytes = BitConverter.GetBytes(value1);
      int iValue1 = BitConverter.ToInt32(bytes, 0);
      
      bytes = BitConverter.GetBytes(value2);
      int iValue2 = BitConverter.ToInt32(bytes, 0);
      
      // If the signs are different, return false except for +0 and -0.
      if ((iValue1 >> 31) != (iValue2 >> 31))
      {
         if (value1 == value2)
            return true;
          
         return false;
      }

      int diff = Math.Abs(iValue1 - iValue2);

      if (diff <= units)
         return true;

      return false;
   }
}
// The example displays the following output:
//        1 = 1.00000012: True

open System

let hasMinimalDifference (value1: float32) (value2: float32) units =
    let bytes = BitConverter.GetBytes value1
    let iValue1 = BitConverter.ToInt32(bytes, 0)
    let bytes = BitConverter.GetBytes(value2)
    let iValue2 = BitConverter.ToInt32(bytes, 0)
    
    // If the signs are different, return false except for +0 and -0.
    if (iValue1 >>> 31) <> (iValue2 >>> 31) then
        value1 = value2
    else
        let diff = abs (iValue1 - iValue2)
        diff <= units

let value1 = 0.1f * 10f
let value2 =
    List.replicate 10 0.1f
    |> List.sum
    
printfn $"{value1:R} = {value2:R}: {hasMinimalDifference value1 value2 1}"
// The example displays the following output:
//        1 = 1.0000001: True

Module Example1
   Public Sub Main()
      Dim value1 As Single = .1 * 10
      Dim value2 As Single = 0
      For ctr As Integer =  0 To 9
         value2 += CSng(.1)
      Next

      Console.WriteLine("{0:R} = {1:R}: {2}", value1, value2,
                        HasMinimalDifference(value1, value2, 1))
   End Sub

   Public Function HasMinimalDifference(value1 As Single, value2 As Single, units As Integer) As Boolean
      Dim bytes() As Byte = BitConverter.GetBytes(value1)
      Dim iValue1 As Integer =  BitConverter.ToInt32(bytes, 0)

      bytes = BitConverter.GetBytes(value2)
      Dim iValue2 As Integer =  BitConverter.ToInt32(bytes, 0)

      ' If the signs are different, Return False except for +0 and -0.
      If ((iValue1 >> 31) <> (iValue2 >> 31)) Then
         If value1 = value2 Then
            Return True
         End If
         Return False
      End If

      Dim diff As Integer =  Math.Abs(iValue1 - iValue2)

      If diff <= units Then
         Return True
      End If

      Return False
   End Function
End Module
' The example displays the following output:
'       1 = 1.00000012: True

在超出文件所記載的精確度時，浮點數的精確度是特定於 .NET 的實作和版本的。因此，兩個數字的比較可能會根據 .NET 的版本產生不同的結果，因為數位的內部表示精確度可能會變更。

給呼叫者的注意事項

using System;

public class Example2
{
   static float value = 112;

   public static void Main()
   {
      byte byte1= 112;
      Console.WriteLine("value = byte1: {0,16}", value.Equals(byte1));
      TestObjectForEquality(byte1);

      short short1 = 112;
      Console.WriteLine("value = short1: {0,16}", value.Equals(short1));
      TestObjectForEquality(short1);

      int int1 = 112;
      Console.WriteLine("value = int1: {0,18}", value.Equals(int1));
      TestObjectForEquality(int1);

      long long1 = 112;
      Console.WriteLine("value = long1: {0,17}", value.Equals(long1));
      TestObjectForEquality(long1);

      sbyte sbyte1 = 112;
      Console.WriteLine("value = sbyte1: {0,16}", value.Equals(sbyte1));
      TestObjectForEquality(sbyte1);

      ushort ushort1 = 112;
      Console.WriteLine("value = ushort1: {0,16}", value.Equals(ushort1));
      TestObjectForEquality(ushort1);

      uint uint1 = 112;
      Console.WriteLine("value = uint1: {0,18}", value.Equals(uint1));
      TestObjectForEquality(uint1);

      ulong ulong1 = 112;
      Console.WriteLine("value = ulong1: {0,17}", value.Equals(ulong1));
      TestObjectForEquality(ulong1);

      decimal dec1 = 112m;
      Console.WriteLine("value = dec1: {0,21}", value.Equals(dec1));
      TestObjectForEquality(dec1);

      double dbl1 = 112;
      Console.WriteLine("value = dbl1: {0,20}", value.Equals(dbl1));
      TestObjectForEquality(dbl1);
   }

   private static void TestObjectForEquality(Object obj)
   {
      Console.WriteLine("{0} ({1}) = {2} ({3}): {4}\n",
                        value, value.GetType().Name,
                        obj, obj.GetType().Name,
                        value.Equals(obj));
   }
}
// The example displays the following output:
//       value = byte1:             True
//       112 (Single) = 112 (Byte): False
//
//       value = short1:             True
//       112 (Single) = 112 (Int16): False
//
//       value = int1:               True
//       112 (Single) = 112 (Int32): False
//
//       value = long1:              True
//       112 (Single) = 112 (Int64): False
//
//       value = sbyte1:             True
//       112 (Single) = 112 (SByte): False
//
//       value = ushort1:             True
//       112 (Single) = 112 (UInt16): False
//
//       value = uint1:               True
//       112 (Single) = 112 (UInt32): False
//
//       value = ulong1:              True
//       112 (Single) = 112 (UInt64): False
//
//       value = dec1:                 False
//       112 (Single) = 112 (Decimal): False
//
//       value = dbl1:                False
//       112 (Single) = 112 (Double): False

let value = 112f

let testObjectForEquality (obj: obj) =
    printfn $"{value} ({value.GetType().Name}) = {obj} ({obj.GetType().Name}): {value.Equals obj}\n"

[<EntryPoint>]
let main _ =
    let byte1= 112uy
    printfn $"value = byte1: {value.Equals byte1,16}"
    testObjectForEquality byte1

    let short1 = 112s
    printfn $"value = short1: {value.Equals short1,16}"
    testObjectForEquality short1

    let int1 = 112
    printfn $"value = int1: {value.Equals int1,18}"
    testObjectForEquality int1

    let long1 = 112L
    printfn $"value = long1: {value.Equals long1,17}"
    testObjectForEquality long1
    
    let sbyte1 = 112y
    printfn $"value = sbyte1: {value.Equals sbyte1,16}"
    testObjectForEquality sbyte1

    let ushort1 = 112us
    printfn $"value = ushort1: {value.Equals ushort1,16}"
    testObjectForEquality ushort1

    let uint1 = 112u
    printfn $"value = uint1: {value.Equals uint1,18}"
    testObjectForEquality uint1

    let ulong1 = 112uL
    printfn $"value = ulong1: {value.Equals ulong1,17}"
    testObjectForEquality ulong1
    
    let dec1 = 112m
    printfn $"value = dec1: {value.Equals dec1,21}"
    testObjectForEquality dec1

    let dbl1 = 112.
    printfn $"value = dbl1: {value.Equals dbl1,20}"
    testObjectForEquality dbl1
    0

// The example displays the following output:
//       value = byte1:             True
//       112 (Single) = 112 (Byte): False
//
//       value = short1:             True
//       112 (Single) = 112 (Int16): False
//
//       value = int1:               True
//       112 (Single) = 112 (Int32): False
//
//       value = long1:              True
//       112 (Single) = 112 (Int64): False
//
//       value = sbyte1:             True
//       112 (Single) = 112 (SByte): False
//
//       value = ushort1:             True
//       112 (Single) = 112 (UInt16): False
//
//       value = uint1:               True
//       112 (Single) = 112 (UInt32): False
//
//       value = ulong1:              True
//       112 (Single) = 112 (UInt64): False
//
//       value = dec1:                 False
//       112 (Single) = 112 (Decimal): False
//
//       value = dbl1:                False
//       112 (Single) = 112 (Double): False

Module Example2
   Dim value As Single = 112

   Public Sub Main()
      Dim byte1 As Byte = 112
      Console.WriteLine("value = byte1: {0,16}", value.Equals(byte1))
      TestObjectForEquality(byte1)

      Dim short1 As Short = 112
      Console.WriteLine("value = short1: {0,16}", value.Equals(short1))
      TestObjectForEquality(short1)

      Dim int1 As Integer = 112
      Console.WriteLine("value = int1: {0,18}", value.Equals(int1))
      TestObjectForEquality(int1)

      Dim long1 As Long = 112
      Console.WriteLine("value = long1: {0,17}", value.Equals(long1))
      TestObjectForEquality(long1)

      Dim sbyte1 As SByte = 112
      Console.WriteLine("value = sbyte1: {0,16}", value.Equals(sbyte1))
      TestObjectForEquality(sbyte1)

      Dim ushort1 As UShort = 112
      Console.WriteLine("value = ushort1: {0,16}", value.Equals(ushort1))
      TestObjectForEquality(ushort1)

      Dim uint1 As UInteger = 112
      Console.WriteLine("value = uint1: {0,18}", value.Equals(uint1))
      TestObjectForEquality(uint1)

      Dim ulong1 As ULong = 112
      Console.WriteLine("value = ulong1: {0,17}", value.Equals(ulong1))
      TestObjectForEquality(ulong1)

      Dim dec1 As Decimal = 112d
      Console.WriteLine("value = dec1: {0,20}", value.Equals(dec1))
      TestObjectForEquality(dec1)

      Dim dbl1 As Double = 112
      Console.WriteLine("value = dbl1: {0,20}", value.Equals(dbl1))
      TestObjectForEquality(dbl1)
   End Sub

   Private Sub TestObjectForEquality(obj As Object)
      Console.WriteLine("{0} ({1}) = {2} ({3}): {4}",
                        value, value.GetType().Name,
                        obj, obj.GetType().Name,
                        value.Equals(obj))
      Console.WriteLine()
   End Sub
End Module
' The example displays the following output:
'       value = byte1:             True
'       112 (Single) = 112 (Byte): False
'
'       value = short1:             True
'       112 (Single) = 112 (Int16): False
'
'       value = int1:               True
'       112 (Single) = 112 (Int32): False
'
'       value = long1:              True
'       112 (Single) = 112 (Int64): False
'
'       value = sbyte1:             True
'       112 (Single) = 112 (SByte): False
'
'       value = ushort1:             True
'       112 (Single) = 112 (UInt16): False
'
'       value = uint1:               True
'       112 (Single) = 112 (UInt32): False
'
'       value = ulong1:              True
'       112 (Single) = 112 (UInt64): False
'
'       value = dec1:                 True
'       112 (Single) = 112 (Decimal): False
'
'       value = dbl1:                False
'       112 (Single) = 112 (Double): False

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