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c# - C#中的工程符号?

转载 作者:可可西里 更新时间:2023-11-01 08:36:18 26 4
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是否有任何代码(或内置函数)允许以工程符号输出 float ?

例如,1.5e-4 将显示为 150µ,5e-3 将显示为 5m

最佳答案

这可能需要重构:

private static string ToEngineeringNotation(this double d)
{
double exponent = Math.Log10(Math.Abs(d));
if (Math.Abs(d) >= 1)
{
switch ((int)Math.Floor(exponent))
{
case 0: case 1: case 2:
return d.ToString();
case 3: case 4: case 5:
return (d / 1e3).ToString() + "k";
case 6: case 7: case 8:
return (d / 1e6).ToString() + "M";
case 9: case 10: case 11:
return (d / 1e9).ToString() + "G";
case 12: case 13: case 14:
return (d / 1e12).ToString() + "T";
case 15: case 16: case 17:
return (d / 1e15).ToString() + "P";
case 18: case 19: case 20:
return (d / 1e18).ToString() + "E";
case 21: case 22: case 23:
return (d / 1e21).ToString() + "Z";
default:
return (d / 1e24).ToString() + "Y";
}
}
else if (Math.Abs(d) > 0)
{
switch ((int)Math.Floor(exponent))
{
case -1: case -2: case -3:
return (d * 1e3).ToString() + "m";
case -4: case -5: case -6:
return (d * 1e6).ToString() + "μ";
case -7: case -8: case -9:
return (d * 1e9).ToString() + "n";
case -10: case -11: case -12:
return (d * 1e12).ToString() + "p";
case -13: case -14: case -15:
return (d * 1e15).ToString() + "f";
case -16: case -17: case -18:
return (d * 1e15).ToString() + "a";
case -19: case -20: case -21:
return (d * 1e15).ToString() + "z";
default:
return (d * 1e15).ToString() + "y";
}
}
else
{
return "0";
}
}

关于c# - C#中的工程符号?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/808104/

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