Write a Java program to find the smallest integer not less than the base-2 logarithm of a given number. Write a Java program to compute the floor of the base-2 logarithm using a recursive approach. Write a Java program to calculate the floor of the logarithm of a number for an arbitrary...
* <p>Note that this method is closely related to the logarithm base 2. * For all positive {@code int} values x: * <ul> * <li>floor(log<sub>2</sub>(x)) = {@code 31 - numberOfLeadingZeros(x)} * <li>ceil(log<sub>2</sub>(x)) = {@code 32 - numberOfLeadingZeros(x - ...
log方法有两个重载的版本:log(double a)用于计算以e为底的自然对数,log(double a, double base)用于计算以指定base为底的对数。 以下是使用Math类进行对数运算的示例代码: ```java double x = 10; double naturalLog = Math.log(x); //计算以e为底的自然对数 System.out.println("Natural logarithm of ...
public class LogarithmExample { public static void main(String[] args) { double value = 10.0; // 计算以e为底的对数 double naturalLog = Math.log(value); System.out.println("以e为底的对数: " + naturalLog); // 计算以10为底的对数 double log10 = Math.log10(value); System.out.println...
Base 10 logarithm of 10.0 is 1.0 Logarithm of (1 + 10.0) is 2.3978952727983707 1. 2. 3. 关于计算相关的数学公式 对数运算与指数运算有着密切的关系,它们之间相互补充。下面是一些常用的与对数相关的数学公式: 换底公式:对于任意正实数a, b(且a ≠ 1),以a为底的b的对数可以通过换底公式转化为以任意...
Note that this method is closely related to the logarithm base 2. For all positivelongvalues x: floor(log2(x)) =63 - numberOfLeadingZeros(x) ceil(log2(x)) =64 - numberOfLeadingZeros(x - 1) Returns: the number of zero bits preceding the highest-order ("leftmost") one-bit in the...
* * <p>Note that this method is closely related to the logarithm base 2. * For all positive {@code int} values x: * <ul> * <li>floor(log<sub>2</sub>(x)) = {@code 31 - numberOfLeadingZeros(x)} * <li>ceil(log<sub>2</sub>(x)) = {@code 32 - numberOfLeadingZeros(x...
(base); } } 计算100的以10为底的对数就变为非常简单了:double log = Logarithm.log(100, 10); // log is 2.0512的以2为底的对数是: double log = Logarithm.log(512, 2); // log is 9.0 下面的两个简单的方法也都是很有用的:static public double log2(double value) {return log(value, 2.0...
() to return a zero-length string. The two digit cost parameter is the base-2 logarithm of the iteration count for the underlying Blowfish-based hashing algorithm and must be in range 04-31, values outside this range will cause crypt() to fail. "$2x$" hashes are potentially weak; "...
Exception in thread "main" java.lang.ArithmeticException: Invalid input for logarithm at java.base/java.lang.Math.log(Math.java:239) at com.example.LogTest.main(LogTest.java:5) 1. 2. 3. 从而导致程序崩溃,影响到整个应用的稳定性。