Epsilon (OpenGamma Strata)

java.lang.Object
- com.opengamma.strata.math.impl.util.Epsilon

public final class Epsilon
extends Object

Taylor expansion epsilon.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static double`	`epsilon(double x)`	This is the Taylor expansion of $$\frac{\exp(x)-1}{x}$$ - note for $$\|x\| > 10^{-10}$$ the expansion is note used .
`static double`	`epsilonP(double x)`	This is the Taylor expansion of the first derivative of $$\frac{\exp(x)-1}{x}$$.
`static double`	`epsilonPP(double x)`	This is the Taylor expansion of the second derivative of $$\frac{\exp(x)-1}{x}$$.

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

- Method Detail
  - epsilon
```
public static double epsilon(double x)
```
    This is the Taylor expansion of $$\frac{\exp(x)-1}{x}$$ - note for $$|x| > 10^{-10}$$ the expansion is note used .
    
    Parameters:
    
    x - the value
    
    Returns:
    
    the result
  - epsilonP
```
public static double epsilonP(double x)
```
    This is the Taylor expansion of the first derivative of $$\frac{\exp(x)-1}{x}$$.
    
    Parameters:
    
    x - the value
    
    Returns:
    
    the result
  - epsilonPP
```
public static double epsilonPP(double x)
```
    This is the Taylor expansion of the second derivative of $$\frac{\exp(x)-1}{x}$$.
    
    Parameters:
    
    x - the value
    
    Returns:
    
    the result