strictmath

StrictMath类log10()方法 (StrictMath Class log10() method)

• log10() method is available in java.lang package.

  log10()方法在java.lang包中可用。

• log10() method is used to return the logarithm of the given (base 10) of the given argument in the method.

  log10()方法用于返回方法中给定参数的给定(以10为底)的对数。

• log10() method is a static method so it is accessible with the class name and if we try to access the method with the class object then we will not get any error.

  log10()方法是静态方法，因此可以使用类名进行访问，如果尝试使用类对象访问该方法，则不会出现任何错误。

• log10() method does not throw any exception.

  log10()方法不会引发任何异常。

Syntax:

句法：

    public static double log10(double d);

Parameter(s):

参数：

• double d – represents the double type argument.

  double d –表示double类型的参数。

Return value:

返回值：

The return type of this method is double – it returns the logarithm (base 10) of the given argument.

此方法的返回类型为double-返回给定参数的对数(以10为底)。

Note:

注意：

• If we pass NaN, method returns NaN.

  如果传递NaN，则方法返回NaN。

• If we pass a value which is equal to 10*N (Here, N is an integer value), method returns the N.

  如果我们传递的值等于10 * N (此处N是整数值)，则方法返回N。

• If we pass a positive infinity, method returns the same (i.e. positive infinity).

  如果我们传递一个正无穷大，则方法将返回相同的值(即正无穷大)。

• If we pass 0 (negative or positive), method returns the negative infinity.

  如果传递0(负数或正数)，则方法将返回负无穷大。

Example:

例：

// Java program to demonstrate the example of 
// log10(double d) method of StrictMath Class.
public class Log10 {
public static void main(String[] args) {
// variable declarations
double d1 = 7.0 / 0.0;
double d2 = -0.0;
double d3 = 6054.2;
// Display previous value of d1,d2,d3
System.out.println("d1: " + d1);
System.out.println("d2: " + d2);
System.out.println("d3: " + d3);
// Here , we will get (Infinity) because we are
// passing parameter whose value is (-infinity)
System.out.println("StrictMath.log10(d1): " + StrictMath.log10(d1));
// Here , we will get (-Infinity) because we are
// passing parameter whose value is (-0.0)
System.out.println("StrictMath.log10(d2): " + StrictMath.log10(d2));
// Here , we will get (log [10 raised to the power of the given argument])
// and we are passing parameter whose value is (6054.2)
System.out.println("StrictMath.log10(d3): " + StrictMath.log10(d3));
}
}

Output

输出量

d1: Infinity
d2: -0.0
d3: 6054.2
StrictMath.log10(d1): Infinity
StrictMath.log10(d2): -Infinity
StrictMath.log10(d3): 3.782056763740091

翻译自: https://www.includehelp.com/java/strictmath-log10-method-with-example.aspx

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