FastErfInverse (glimpse-full-assembly 4.0.0 API)

java.lang.Object
- com.metsci.glimpse.util.math.fast.FastErfInverse

```
public class FastErfInverse
extends Object
```
Approximates the inverse of erf(x), valid on the interval [-0.9999779095,0.9999779095], with a maximum error of about 6e-5.
Being a piecewise linear interpolation of a convex function, the function's magnitude is everywhere an upper bound on the true value, which is fine for the usual application of this function (multipliers for confidence intervals, making the estimate slightly more conservative).

Author:

ellis

- Method Summary
  
  All Methods Static Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  double evaluate(double x)
  
  static FastErfInverse getInstance()
  - Methods inherited from class java.lang.Object
    equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getInstance

public static final FastErfInverse getInstance()

evaluate
```
public double evaluate(double x)
```