Java 中的 StrictMath cbrt()方法

原文:https://www . geesforgeks . org/strict math-cbrt-method-in-Java/

java . lang . strict math . cbrt()是 Java 中的一个内置方法,用于返回给定双精度值的立方根。该方法显示了三个特殊结果:

  • 当给定的参数为零时,结果是一个零,其符号与参数相同。
  • 当自变量为无穷大时,结果为无穷大,自变量符号相同。
  • 当给定的参数是 NaN 时,结果是 NaN。

语法:

public static double cbrt(*double num*)

参数:该方法接受一个参数,该参数为要求求立方根的双数型。 返回值:该方法返回的立方根。 下面的程序说明了 java.lang.StrictMath.cbrt()方法: 程序 1:

Java 语言(一种计算机语言,尤用于创建网站)

// Java program to illustrate the
// java.lang.StrictMath.cbrt()
import java.lang.*;

public class Geeks {

    public static void main(String[] args)
    {

        double val1 = 8.05, val2 = 27, val3 = 0;

        // It returns the cube root of a double value
        double cbrtvalue = StrictMath.cbrt(val1);
        System.out.println("Cube root of "+val1+
                                  " = " + cbrtvalue);

        cbrtvalue = StrictMath.cbrt(val2);
        System.out.println("Cube root of "+val2+
                                  " = " + cbrtvalue);

        cbrtvalue = StrictMath.cbrt(val3);
        System.out.println("Cube root of "+val3+
                                  " = " + cbrtvalue);

    }
}

Output: 

Cube root of 8.05 = 2.0041580161269152
Cube root of 27.0 = 3.0
Cube root of 0.0 = 0.0

程序 2:

Java 语言(一种计算机语言,尤用于创建网站)

// Java program to illustrate the
// java.lang.StrictMath.cbrt()
import java.lang.*;

public class Geeks {

    public static void main(String[] args)
    {

        double val1 = -8.05, val2 = 128, val3 = 0;

        // It returns the cube root of a double value
        double cbrtvalue = StrictMath.cbrt(val1);
        System.out.println("Cube root of "+val1+
                                  " = " + cbrtvalue);

        cbrtvalue = StrictMath.cbrt(val2);
        System.out.println("Cube root of "+val2+
                                  " = " + cbrtvalue);

        cbrtvalue = StrictMath.cbrt(val3);
         System.out.println("Cube root of "+val3+
                                  " = " + cbrtvalue);

    }
}

Output: 

Cube root of -8.05 = -2.0041580161269152
Cube root of 128.0 = 5.039684199579493
Cube root of 0.0 = 0.0