Java Math log1p() Method
Example
Return the natural logarithm of 1 + x for different values of x:
System.out.println(Math.log1p(6));
System.out.println(Math.log1p(Math.E));
System.out.println(Math.log1p(2));
System.out.println(Math.log1p(1));
System.out.println(Math.log1p(0));
System.out.println(Math.log1p(-1));
Definition and Usage
The log1p() method returns the natural logarithm of 1 + x for any number x.
The natural logarithm is the logarithm with base e. The value of e is approximately 2.718282 and it is available as the constant Math.E in Java.
Syntax
public static double log1p(double number)Parameter Values
| Parameter | Description |
|---|---|
| number | Required. A value greater than or equal to -1. If the value is less than -1 the method returns NaN (Not a Number). |
Technical Details
| Returns: | A double value representing the natural logarithm of 1 + x for a number x. |
|---|---|
| Java version: | 1.5+ |
❮ Math Methods
