using System;

using System.Runtime.InteropServices;

namespace Cabinink.Algorithm

{

/// <summary>

/// 常用的数学常量密封类。

/// </summary>

[Serializable]

[ComVisible(true)]

public sealed class MathConstant

{

/// <summary>

/// 圆周率。

/// </summary>

public static double CircumferenceRatio => 3.141592653589793238462643383;

/// <summary>

/// 自然常数。

/// </summary>

public static double UniversalConstant => 2.71828188284591;

/// <summary>

/// 欧拉常数。

/// </summary>

public static double EulerMascheroniConstant => 0.577215664901533;

/// <summary>

/// 费根鲍姆常数。

/// </summary>

public static double FeigenbaumConstant => 4.66920160910299;

/// <summary>

/// 黄金分割数。

/// </summary>

public static double GoldenSectionNumber => 0.618033988749895;

/// <summary>

/// 卡特兰数。

/// </summary>

public static double CatalanNumber => 0.915965594177219;

/// <summary>

/// 卡钦常数。

/// </summary>

public static double KhinchinConstant => 2.68545200106531;

/// <summary>

/// 孪生质数常数。

/// </summary>

public static double TwinPrimeConstant => 0.66016181584687;

/// <summary>

/// 毕达哥拉斯常数。

/// </summary>

public static double PythagorasConstant => 1.4142135623731;

/// <summary>

/// Meissel-Mertens常数。

/// </summary>

public static double MeisselMertensConstant => 0.261497212847643;

/// <summary>

/// 塑胶数。

/// </summary>

public static double PlasticNumber => 1.32471795724475;

/// <summary>

/// 兰道-拉马努金常数。

/// </summary>

public static double LandauRamanujanConstant => 0.764223653589221;

/// <summary>

/// 黄金分割常数。

/// </summary>

public static double GoldenSplitConstant => 0.61803398874989484;

/// <summary>

/// 康威常数。

/// </summary>

public static double ConwayConstant => 1.303577269;

/// <summary>

/// Champernowne常数。

/// </summary>

public static double ChampernowneConstant => 0.1234567891011121;

}

}