C#中的Single.IsInfinity()方法用于返回一个值,该值指示指定的数字是负无穷还是正无穷。
语法如下-
public static bool IsInfinity (float val);
上面的val是单精度浮点数。
现在让我们看一个例子-
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("\nValue2 = "+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)); } }
输出结果
这将产生以下输出-
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
现在让我们来看另一个示例-
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("\nValue2 = "+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)); } }
输出结果
这将产生以下输出-
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