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法律Single.IsInfinity() 方法在 C# 中的用法示例
C# 中的 Single.IsInfinity() 方法用于返回一个值，指示指定的数字计算得到的是负无穷还是正无穷。
语法
语法如下所示 −
public static bool IsInfinity (float val);
此处，val 是一个单精度浮点数。
示例
现在让我们看一个示例 −
using System;
public class Demo {
public static void Main(){
float f1 = 19.3f;
float f2 = Single.MaxValue;
Console.WriteLine("Value1 = "+f1);
Console.WriteLine("Hashcode for Value1 = "+f1.GetHashCode());
Console.WriteLine("TypeCode for Value1 = "+f1.GetTypeCode());
Console.WriteLine("Is Value1 value is positive or negative infinity? = "+Single.IsInfinity(f1));
Console.WriteLine("
Value2 = "+f2);
Console.WriteLine("Hashcode for Value2 = "+f2.GetHashCode());
Console.WriteLine("TypeCode for Value2 = "+f2.GetTypeCode());
Console.WriteLine("Is Value2 value is positive or negative infinity? = "+Single.IsInfinity(f2));
}
}输出
将产生以下输出 −
Value1 = 19.3 Hashcode for Value1 = 1100637798 TypeCode for Value1 = Single Is Value1 value is positive or negative infinity? = False Value2 = 3.402823E+38 Hashcode for Value2 = 2139095039 TypeCode for Value2 = Single Is Value2 value is positive or negative infinity? = False
示例
现在让我们看另一个示例 −
using System;
public class Demo {
public static void Main(){
float f1 = 5.0f/0.0f;
float f2 = Single.MinValue;
Console.WriteLine("Value1 = "+f1);
Console.WriteLine("Hashcode for Value1 = "+f1.GetHashCode());
Console.WriteLine("TypeCode for Value1 = "+f1.GetTypeCode());
Console.WriteLine("Is Value1 value is positive or negative infinity? = "+Single.IsInfinity(f1));
Console.WriteLine("
Value2 = "+f2);
Console.WriteLine("Hashcode for Value2 = "+f2.GetHashCode());
Console.WriteLine("TypeCode for Value2 = "+f2.GetTypeCode());
Console.WriteLine("Is Value2 value is positive or negative infinity? = "+Single.IsInfinity(f2));
}
}输出
将产生以下输出 −
Value1 = ∞ Hashcode for Value1 = 2139095040 TypeCode for Value1 = Single Is Value1 value is positive or negative infinity? = True Value2 = -3.402823E+38 Hashcode for Value2 = -8388609 TypeCode for Value2 = Single Is Value2 value is positive or negative infinity? = False
更新于： 03-Dec-2019
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