Constant (Apache Commons Math 3.6.1 API)

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java.lang.Object
- org.apache.commons.math3.analysis.function.Constant

All Implemented Interfaces:

DifferentiableUnivariateFunction, UnivariateDifferentiableFunction, UnivariateFunction
```
public class Constant
extends Object
implements UnivariateDifferentiableFunction, DifferentiableUnivariateFunction
```
Constant function.

Since:

3.0

Constructor Summary

Constructors
Constructor and Description

Constant(double c)

Method Summary

Methods
Modifier and Type	Method and Description
`DifferentiableUnivariateFunction`	`derivative()` Deprecated. as of 3.1, replaced by `value(DerivativeStructure)`
`DerivativeStructure`	`value(DerivativeStructure t)` Simple mathematical function.
`double`	`value(double x)` Compute the value of the function.

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

- Constructor Detail
  - Constant
```
public Constant(double c)
```
    Parameters:
    c - Constant.
- Method Detail
  - value
```
public double value(double x)
```
    Compute the value of the function.
    
    Specified by:
    
    value in interface UnivariateFunction
    
    Parameters:
    x - Point at which the function value should be computed.
    
    Returns:
    the value of the function.
  - derivative
```
@Deprecated
public DifferentiableUnivariateFunction derivative()
```
    Deprecated. as of 3.1, replaced by value(DerivativeStructure)
    
    Returns the derivative of the function
    
    Specified by:
    
    derivative in interface DifferentiableUnivariateFunction
    
    Returns:
    the derivative function
  - value
```
public DerivativeStructure value(DerivativeStructure t)
```
    Simple mathematical function.
    UnivariateDifferentiableFunction classes compute both the value and the first derivative of the function.
    
    Specified by:
    
    value in interface UnivariateDifferentiableFunction
    
    Parameters:
    t - function input value
    
    Returns:
    function result
    Since:
    
    3.1

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