jhelp.util.math.formal

Interface ConstantsReferences

All Known Implementing Classes:

ConstantsReferencesDefault

public interface ConstantsReferences

Constants references.
A reference associate a symbol to a real value as PI, e, ...
The symbol will be replace by its value when simplification occurs

Author:

JHelp

Method Summary

Methods

Modifier and Type	Method and Description
Function	constantFunction(java.lang.String s) Function representation of the constant
void	defineConstant(java.lang.String s, double d) Define a constant
boolean	isConstantDefine(java.lang.String s) Indicates is a symbol is a define constant
double	obtainConstantValue(java.lang.String s) Real value of constant

Method Detail

constantFunction

Function constantFunction(java.lang.String s)

Function representation of the constant

Parameters:

s - Symbol search

Returns:

Function representation or null if no symbol match

defineConstant

void defineConstant(java.lang.String s,
                  double d)

Define a constant

Parameters:

s - Symbol associate

d - Constant value

isConstantDefine

boolean isConstantDefine(java.lang.String s)

Indicates is a symbol is a define constant

Parameters:

s - Symbol tested

Returns:

true if the symbol defined

obtainConstantValue

double obtainConstantValue(java.lang.String s)

Real value of constant

Parameters:

s - Symbol search

Returns:

Constant value or Double.NaN if not define