C# |数学。Exp()方法

原文:https://www.geeksforgeeks.org/c-sharp-math-exp-method/

在 C# 中， Exp() 是一个数学类方法，用于将 e 提升到指定的幂。这里 e 是一个数学常数，其值约为 2.71828 。 Exp() 是 Log() 的逆。

语法:

public static double Exp (double num);

参数:

编号:为系统所需型号。双指定一个功率。

返回类型:返回一个数字 e 加到类型系统的 num 上。双。

注:

  • If num is equal to nan , the return value is nan .
  • If number is equal to positive value , the return value is infinity .
  • If value is equal to negative value , the return value is 0 .

例 1:

// C# Program to illustrate the
// Math.Exp(Double) Method
using System;

class Geeks {

    // Main Method
    public static void Main()
    {

        // using the method
        Console.WriteLine(Math.Exp(10.0));
        Console.WriteLine(Math.Exp(15.57));
        Console.WriteLine(Math.Exp(529.548));
        Console.WriteLine(Math.Exp(0.00));
    }
}

输出:

22026.4657948067
5780495.71030692
9.54496417945595E+229
1

例 2:

// C# Program to illustrate the
// Math.Exp(Double) Method by 
// taking NaN, PositiveInfinity
// and NegativeInfinity]
using System;

class Geeks {

    // Main Method
    public static void Main()
    {

        // Taking NaN
        Console.WriteLine(Math.Exp(Double.NaN));

        // Taking PositiveInfinity
        Console.WriteLine(Math.Exp(Double.PositiveInfinity));

        // Taking NegativeInfinity
        Console.WriteLine(Math.Exp(Double.NegativeInfinity));
    }
}

输出:

NaN
Infinity
0

参考:T2？view=netcore-2.1

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