B4FFTLJ

```
public class B4FFTLJ
extends java.lang.Object
```
Computes four approximations of B4 by FFT: HNC(C), HNC(V), PY(C), and PY(V). HNC: hypernetted-chain integral-equation theory PY: Percus-Yevick integral-equation theory (C):compressibility route (V):virial (pressure) route The HNC(V) approximation is equivalent to the "simple part" of the f-bond-only formulation for (at least) B4, B5, and B6. Values agree with those computed through the recursive formalism (the Ornstein-Zernike formulation) in BnHNCLJ.java and BnPYLJ.java. Diagrams are labeled using the nomenclature of Barker, Leonard, and Pompe (1966): "Fifth Virial Coefficients", JCP 44(11); e.g., D4 is the four-membered ring. X is added to the diagram name to denote if an x=r*df/dr bond is present. This our own nomenclature...

Constructors
Constructor	Description
`B4FFTLJ()`

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static double[]`	`getfr(int N, double del_r, double reducedTemp)`
`static void`	`main(java.lang.String[] args)`

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

public static void main(java.lang.String[] args)

public static double[] getfr(int N,
                             double del_r,
                             double reducedTemp)

Class B4FFTLJ