Atan (Apache Commons Math 3.6.1 API)

java.lang.Object

org.apache.commons.math3.analysis.function.Atan

All Implemented Interfaces:: DifferentiableUnivariateFunction, UnivariateDifferentiableFunction, UnivariateFunction

public class Atan extends Object implements UnivariateDifferentiableFunction, DifferentiableUnivariateFunction

Arc-tangent function.

Since:: 3.0

Constructor Summary

Constructors

Constructor

Description

Atan()
Method Summary

Modifier and Type

Method

Description

UnivariateFunction

derivative()

Deprecated.
as of 3.1, replaced by value(DerivativeStructure)

double

value(double x)

Compute the value of the function.

DerivativeStructure

value(DerivativeStructure t)

Simple mathematical function.

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

Constructor Details
- Atan
  
  public Atan()
Method Details
- 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 UnivariateFunction 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