ParameterFunction (OREKIT 13.0-SNAPSHOT API)

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface ParameterFunction
```
Interface representing a scalar function depending on a ParameterDriver.

Since:

8.0

Author:

Luc Maisonobe

See Also:

Differentiation.differentiate(ParameterFunction, int, double)

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  double value(ParameterDriver parameterDriver, AbsoluteDate date)
  Evaluate the function.

- Method Detail
  - value
```
double value(ParameterDriver parameterDriver,
             AbsoluteDate date)
```
    Evaluate the function.
    
    Parameters:
    
    parameterDriver - driver for the parameter.
    
    date - date at which the function wants to be known
    
    Returns:
    
    scalar value of the function