C#中的Double.IsNegativeInfinity()方法
C#中的Double.IsNegativeInfinity()方法用于返回一个值，该值指示指定的数字是否计算为负无穷大。
语法
语法如下-
public static bool IsNegativeInfinity (double val);
上面的val是一个双精度浮点数。
示例
现在让我们看一个例子-
using System;
public class Demo {
public static void Main(){
double d = 0.0/0;
Console.WriteLine("Double Value = "+d);
Console.WriteLine("HashCode of Double Value = "+d.GetHashCode());
TypeCode type = d.GetTypeCode();
Console.WriteLine("TypeCode of Double Value = "+type);
Console.WriteLine("Positive Infinity? = "+Double.IsInfinity(d));
Console.WriteLine("Check whether the specified value is NaN? = "+Double.IsNaN(d));
Console.WriteLine("Does the value evaluate to negative infinity? = "+Double.IsNegativeInfinity(d));
}
}输出结果
这将产生以下输出-
Double Value = NaN HashCode of Double Value = -524288 TypeCode of Double Value = Double Positive Infinity? = False Check whether the specified value is NaN? = True Does the value evaluate to negative infinity? = False
示例
现在让我们来看另一个示例-
using System;
public class Demo {
public static void Main(){
double d = -1.0/0.0;
Console.WriteLine("Double Value = "+d);
Console.WriteLine("HashCode of Double Value = "+d.GetHashCode());
TypeCode type = d.GetTypeCode();
Console.WriteLine("TypeCode of Double Value = "+type);
Console.WriteLine("Positive Infinity? = "+Double.IsInfinity(d));
Console.WriteLine("Check whether the specified value is NaN? = "+Double.IsNaN(d));
Console.WriteLine("Does the value evaluate to negative infinity? = "+Double.IsNegativeInfinity(d));
}
}输出结果
这将产生以下输出-
Double Value = -∞ HashCode of Double Value = -1048576 TypeCode of Double Value = Double Positive Infinity? = True Check whether the specified value is NaN? = False Does the value evaluate to negative infinity? = True
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