org.apache.commons.math3.analysis.function

## Class Sinc

• ### Constructor Summary

Constructors
Constructor and Description
Sinc()
The sinc function, sin(x) / x.
Sinc(boolean normalized)
Instantiates the sinc function.
• ### Method Summary

Methods
Modifier and Type Method and Description
UnivariateFunction derivative()
Deprecated.
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

• #### Sinc

public Sinc()
The sinc function, sin(x) / x.
• #### Sinc

public Sinc(boolean normalized)
Instantiates the sinc function.
Parameters:
normalized - If true, the function is  sin(πx) / πx, otherwise sin(x) / x.
• ### 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 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)
throws DimensionMismatchException
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
Throws:
DimensionMismatchException - if t is inconsistent with the function's free parameters or order
Since:
3.1