Ln (org.matheclipse:matheclipse-gpl 3.0.0 API)

java.lang.Object
- de.tilman_neumann.jml.transcendental.Ln

```
public class Ln
extends Object
```
Implementation of the natural logarithm function for BigDecimals.

Author:

Tilman Neumann

Constructor Summary

Constructors
Constructor Description

Ln()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static BigDecimal`	`ln(BigDecimal x, Precision outPrec)`
`static BigDecimal`	`ln(BigDecimal x, Scale outScale)`	Compute the natural logarithm of x, for x>0.
`static BigDecimal`	`ln2(Scale outScale)`	Faster ln2 implementation, computing the series expansion of 2^(1/k) for some optimally chosen k.
`static void`	`main(String[] argv)`	Test.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Ln
```
public Ln()
```
- Method Detail
  - ln2
```
public static BigDecimal ln2(Scale outScale)
```
    Faster ln2 implementation, computing the series expansion of 2^(1/k) for some optimally chosen k.
    
    Parameters:
    
    outScale - Wanted precision in after-comma decimal digits
    
    Returns:
    
    ln(2)
  - ln
```
public static BigDecimal ln(BigDecimal x,
                            Precision outPrec)
```
  - ln
```
public static BigDecimal ln(BigDecimal x,
                            Scale outScale)
```
    Compute the natural logarithm of x, for x>0. This algorithm takes the reciprocal of x>1 and then uses the simple reduction, followed by an AGM reduction. The fastest algorithm for all number ranges.
    
    Parameters:
    
    x -
    
    outScale -
    
    Returns:
    
    ln(x)
  - main
```
public static void main(String[] argv)
```
    Test.
    
    Parameters:
    
    argv - ignored