在C#中, MathF.Log10(Single)是MathF类方法。它用于返回指定数字的以10为底的对数。
语法: public static float Log10(float x);
在此, x是要计算其对数的指定数字,其类型为System.Single 。
返回值:它返回val的对数(底数10日志val的)和它的类型是System.Single。
注意:参数x始终指定为以10为底的数字。返回值取决于传递的参数。以下是一些情况:
- 如果参数为正,则method将返回自然对数或log 10 (val) 。
- 如果参数为零,则结果为NegativeInfinity 。
- 如果参数为Negative(小于零)或等于NaN ,则结果为NaN 。
- 如果参数为PositiveInfinity ,则结果为PositiveInfinity 。
- 如果参数为NegativeInfinity ,则结果为NaN 。
例子:
// C# program to demonstrate working
// of MathF.Log10(Single) method
using System;
class Geeks {
// Main Method
public static void Main(String[] args)
{
// float values whose logarithm
// to be calculated
float a = 9.887f;
float b = 0f;
float c = -4.45f;
float nan = Single.NaN;
float positiveInfinity = Single.PositiveInfinity;
float negativeInfinity = Single.NegativeInfinity;
// Input is positive number so output
// will be logarithm of number
Console.WriteLine(MathF.Log10(a));
// positive zero as argument, so output
// will be -Infinity
Console.WriteLine(MathF.Log10(b));
// Input is negative number so output
// will be NaN
Console.WriteLine(MathF.Log10(c));
// Input is NaN so output
// will be NaN
Console.WriteLine(MathF.Log10(nan));
// Input is PositiveInfinity so output
// will be Infinity
Console.WriteLine(MathF.Log10(positiveInfinity));
// Input is NegativeInfinity so output
// will be NaN
Console.WriteLine(MathF.Log10(negativeInfinity));
}
}
输出:
0.9950646
-Infinity
NaN
NaN
Infinity
NaN