Erf (OpenChemLib 2021.2.0 API)

java.lang.Object
- smile.math.special.Erf

```
public class Erf
extends java.lang.Object
```
The error function (also called the Gauss error function) is a special function of sigmoid shape which occurs in probability, statistics, materials science, and partial differential equations. It is defined as:
erf(x) = ∫₀^x e^-t²dt
The complementary error function, denoted erfc, is defined as erfc(x) = 1 - erf(x). The error function and complementary error function are special cases of the incomplete gamma function.

Author:

Haifeng Li

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static double`	`erf(double x)`	The Gauss error function.
`static double`	`erfc(double x)`	The complementary error function.
`static double`	`erfcc(double x)`	The complementary error function with fractional error everywhere less than 1.2 × 10^-7.
`static double`	`inverf(double p)`	The inverse error function.
`static double`	`inverfc(double p)`	The inverse complementary error function.

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

- Method Detail
  - erf
```
public static double erf(double x)
```
    The Gauss error function.
  - erfc
```
public static double erfc(double x)
```
    The complementary error function.
  - erfcc
```
public static double erfcc(double x)
```
    The complementary error function with fractional error everywhere less than 1.2 × 10^-7. This concise routine is faster than erfc.
  - inverfc
```
public static double inverfc(double p)
```
    The inverse complementary error function.
  - inverf
```
public static double inverf(double p)
```
    The inverse error function.