Java Math.log() to get natural logarithm (base e) of the input number

Math.log()

Math.log() returns natural log value of input number with base e.
Syntax

Math.log(input_number)

Here are some examples with different type of numbers.

System.out.println(Math.log(4));   //1.3862943611198906 
System.out.println(Math.log(1));   //0.0
System.out.println(Math.log(0));   //-Infinity
System.out.println(Math.log(4.12));//1.415853163361435

Using negative input numbers

System.out.println(Math.log(-4.12));  //NaN 
System.out.println(Math.log(-1));     //NaN

All Math functions

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Math.log()

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