Επεξεργασία

Κοινή χρήση μέσω

Double.IsPositiveInfinity(Double) Method

  • Reference

Definition

Namespace:
System
Assembly:
System.Runtime.dll
Assembly:
mscorlib.dll
Assembly:
netstandard.dll
Source:
Double.cs
Source:
Double.cs
Source:
Double.cs

Returns a value indicating whether the specified number evaluates to positive infinity.

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

Parameters

d
Double

A double-precision floating-point number.

Returns

Boolean

true if d evaluates to PositiveInfinity; otherwise, false.

Implements

IsPositiveInfinity(TSelf)

Examples

The following code example illustrates the use of IsPositiveInfinity:

// This will return S"true".
Console::WriteLine( "IsPositiveInfinity(4.0 / 0) == {0}.", Double::IsPositiveInfinity( 4.0 / zero ) ? (String^)"true" : "false" );

// This will return "true".
Console.WriteLine("IsPositiveInfinity(4.0 / 0) == {0}.", Double.IsPositiveInfinity(4.0 / 0) ? "true" : "false");

// This will return "true".
printfn $"IsPositiveInfinity(4.0 / 0) = %b{Double.IsPositiveInfinity(4. / 0.)}."

' This will return "True".
Console.Write("IsPositiveInfinity(4.0 / 0) = ")
If Double.IsPositiveInfinity(4 / 0) Then
    Console.WriteLine("True.")
Else
    Console.WriteLine("False.")
End If

Remarks

Floating-point operations return PositiveInfinity to signal an overflow condition.

Applies to

See also