FunctionExtension

All Superinterfaces:

java.io.Serializable
```
public interface FunctionExtension
extends java.io.Serializable
```
FunctionExtension provides interface for function algorithm definition. In this case algorithm definition is based on source code using JAVA (for JAVA / Android) or .NET. If implemented Function Extension object can be further used while Function object construction, which means it can extend mXparser math collection. mXparser extension with your own implementation can be achieved by implementing FunctionExtension interface, creating an FunctionExtension object, creating Function object based on FunctionExtension, adding Function object to Expression / mXparser definition.

Version:

5.2.0

See Also:

Function

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`double`	`calculate()`	Actual algorithm implementation.
`FunctionExtension`	`clone()`	Cloning in case of usage in Expression with recursive statements.
`java.lang.String`	`getParameterName(int parameterIndex)`	Gets parameter name
`int`	`getParametersNumber()`	Gets parameters number.
`void`	`setParameterValue(int parameterIndex, double parameterValue)`	Sets value of function parameter

- Method Detail
  - getParametersNumber
```
int getParametersNumber()
```
    Gets parameters number.
    
    Returns:
    
    Returns parameters number.
  - setParameterValue
```
void setParameterValue(int parameterIndex,
                       double parameterValue)
```
    Sets value of function parameter
    
    Parameters:
    
    parameterIndex - - parameter index (from 0 to n-1)
    
    parameterValue - - parameter value
  - getParameterName
```
java.lang.String getParameterName(int parameterIndex)
```
    Gets parameter name
    
    Parameters:
    
    parameterIndex - - parameter index (from 0 to n-1)
    
    Returns:
    
    Returns parameter name
  - calculate
```
double calculate()
```
    Actual algorithm implementation.
    
    Returns:
    
    Function Extension value.
  - clone
```
FunctionExtension clone()
```
    Cloning in case of usage in Expression with recursive statements.
    
    Returns:
    
    Returns FunctionExtension object that was cloned.
    
    See Also:
    
    Expression.getRecursiveMode()