Double.IsNegativeInfinity(Double) Méthode

  • Référence

Définition

Espace de noms:
System
Assembly:
System.Runtime.dll
Assembly:
mscorlib.dll
Assembly:
netstandard.dll
Source:
Double.cs
Source:
Double.cs
Source:
Double.cs

Retourne une valeur indiquant si le nombre spécifié est équivalent à l'infini négatif.

public:
 static bool IsNegativeInfinity(double d);
public:
 static bool IsNegativeInfinity(double d) = System::Numerics::INumberBase<double>::IsNegativeInfinity;
public static bool IsNegativeInfinity (double d);
static member IsNegativeInfinity : double -> bool
Public Shared Function IsNegativeInfinity (d As Double) As Boolean

Paramètres

d
Double

Nombre à virgule flottante double précision.

Retours

Boolean

true si d a la valeur NegativeInfinity ; sinon, false.

Implémente

IsNegativeInfinity(TSelf)

Exemples

L’exemple de code suivant illustre l’utilisation de IsNegativeInfinity:

// This will return S"true".
Console::WriteLine( "IsNegativeInfinity(-5.0 / 0) == {0}.", Double::IsNegativeInfinity(  -5.0 / zero ) ? (String^)"true" : "false" );

// This will return "true".
Console.WriteLine("IsNegativeInfinity(-5.0 / 0) == {0}.", Double.IsNegativeInfinity(-5.0 / 0) ? "true" : "false");

// This will return "true".
printfn $"IsNegativeInfinity(-5.0 / 0) = {Double.IsNegativeInfinity(-5. / 0.)}."

' This will return "True".
Console.Write("IsNegativeInfinity(-5.0 / 0) = ")
If Double.IsNegativeInfinity(-5 / 0) Then
    Console.WriteLine("True.")
Else
    Console.WriteLine("False.")
End If

if ( d > Double::MaxValue )
{
   Console::WriteLine( "Your number is bigger than a double." );
}

if (d > Double.MaxValue)
   Console.WriteLine("Your number is bigger than a double.");

if d > Double.MaxValue then
   printfn $"Your number is bigger than a double."

If D > Double.MaxValue Then
    Console.WriteLine("Your number is bigger than a double.")
End If

// This will equal Infinity.
Console::WriteLine( "10.0 minus NegativeInfinity equals {0}.", (10.0 - Double::NegativeInfinity) );

// This will equal Infinity.
Console.WriteLine("10.0 minus NegativeInfinity equals {0}.", (10.0 - Double.NegativeInfinity).ToString());

// This will equal Infinity.
printfn $"10.0 minus NegativeInfinity equals {10.0 - Double.NegativeInfinity}."

' This will equal Infinity.
Console.WriteLine("10.0 minus NegativeInfinity equals " + (10 - Double.NegativeInfinity).ToString() + ".")

Remarques

Les opérations à virgule flottante retournent NegativeInfinity pour signaler une condition de dépassement de capacité.

S’applique à

Voir aussi