Decimal.Compare(Decimal, Decimal) Méthode

Définition

Espace de noms:

System

Assembly:

System.Runtime.dll

Source:

Decimal.cs

Compare deux valeurs Decimal spécifiées.

public:
 static int Compare(System::Decimal d1, System::Decimal d2);

public static int Compare (decimal d1, decimal d2);

static member Compare : decimal * decimal -> int

Public Shared Function Compare (d1 As Decimal, d2 As Decimal) As Integer

Paramètres

d1

Decimal

Première valeur à comparer.

d2

Decimal

Deuxième valeur à comparer.

Retours

Int32

Nombre signé indiquant les valeurs relatives de d1 et de d2.

Valeur de retour	Signification
Inférieure à zéro	d1 est inférieur à d2.
Zéro	d1 et d2 sont égaux.
Supérieure à zéro	d1 est supérieur à d2.

Exemples

L’exemple suivant compare plusieurs Decimal valeurs. Notez que la première comparaison indique que les deux valeurs sont égales malgré l’opération de soustraction effectuée sur la value2 variable. Cela est dû au fait que le Decimal type a 29 chiffres de précision, alors qu’une différence entre ces deux valeurs ne peut être détectée qu’avec 30 chiffres de précision.

using System;

public enum Relationship
{  LessThan = -1, Equals = 0, GreaterThan = 1 }

public class Example
{
   public static void Main()
   {
      decimal value1 = Decimal.MaxValue;
      decimal value2 = value1 - .01m;
      Console.WriteLine("{0} {2} {1}", value1, value2,
                        (Relationship) Decimal.Compare(value1, value2));

      value2 = value1 / 12m - .1m;
      value1 = value1 / 12m;
      Console.WriteLine("{0} {2} {1}", value1, value2,
                        (Relationship) Decimal.Compare(value1, value2));

      value1 = value1 - .2m;
      value2 = value2 + .1m;
      Console.WriteLine("{0} {2} {1}", value1, value2,
                        (Relationship) Decimal.Compare(value1, value2));
   }
}
// The example displays the following output:
//     79228162514264337593543950335 Equals 79228162514264337593543950335
//     6602346876188694799461995861.2 GreaterThan 6602346876188694799461995861.1
//     6602346876188694799461995861.0 LessThan 6602346876188694799461995861.2

open System

type Relationship =
    | LessThan = -1
    | Equals = 0
    | GreaterThan = 1

[<EntryPoint>]
let main _ =
    let value1 = Decimal.MaxValue
    let value2 = value1 - 0.01m
    printfn $"{value1} {Decimal.Compare(value1, value2) |> enum<Relationship>} {value2}"

    let value2 = value1 / 12m - 0.1m
    let value1 = value1 / 12m
    printfn $"{value1} {Decimal.Compare(value1, value2) |> enum<Relationship>} {value2}"

    let value1 = value1 - 0.2m
    let value2 = value2 + 0.1m
    printfn $"{value1} {Decimal.Compare(value1, value2) |> enum<Relationship>} {value2}"

    0

// The example displays the following output:
//     79228162514264337593543950335 Equals 79228162514264337593543950335
//     6602346876188694799461995861.2 GreaterThan 6602346876188694799461995861.1
//     6602346876188694799461995861.0 LessThan 6602346876188694799461995861.2

Public Enum Relationship As Integer
    LessThan = -1
    Equals = 0
    GreaterThan = 1
End Enum

Module Example
   Public Sub Main()
      Dim value1 As Decimal = Decimal.MaxValue
      Dim value2 As Decimal = value1 - .01d
      Console.WriteLine("{0} {2} {1}", value1, value2, 
                        CType(Decimal.Compare(value1, value2), Relationship))   
   
      value2 = value1 / 12d - .1d
      value1 = value1 / 12d
      Console.WriteLine("{0} {2} {1}", value1, value2, 
                        CType(Decimal.Compare(value1, value2), Relationship))   
   
      value1 = value1 - .2d
      value2 = value2 + .1d
      Console.WriteLine("{0} {2} {1}", value1, value2, 
                        CType(Decimal.Compare(value1, value2), Relationship))   
   End Sub
End Module
' The example displays the following output:
'     79228162514264337593543950335 Equals 79228162514264337593543950335
'     6602346876188694799461995861.2 GreaterThan 6602346876188694799461995861.1
'     6602346876188694799461995861.0 LessThan 6602346876188694799461995861.2

Voir aussi

• CompareTo(Object)
• Equals(Object)