Double.IsNegativeInfinity(Double) メソッド

定義

指定した数が負の無限大に評価されるかどうかを示す値を返します。

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

パラメーター

d
Double

倍精度浮動小数点数。

返品

に評価される場合は a0/&。それ以外の場合は

実装

次のコード例に IsNegativeInfinity の使用方法を示します。

// 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 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).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() + ".")

注釈

浮動小数点演算は、オーバーフロー状態を通知するために NegativeInfinity を返します。

適用対象

こちらもご覧ください