org.matheclipse.core.reflection.system

Class InverseFunction

java.lang.Object

org.matheclipse.core.eval.interfaces.AbstractFunctionEvaluator

org.matheclipse.core.reflection.system.InverseFunction

All Implemented Interfaces:

IFunctionEvaluator, IEvaluator

public class InverseFunction
extends AbstractFunctionEvaluator

Constructor Summary

Constructors

Constructor and Description
InverseFunction()

Method Summary

Modifier and Type	Method and Description
IExpr	evaluate(IAST ast) Symbolic evaluation of a function.
static IAST	getInverseFunction(IAST ast) Get a new constructed inverse function AST from the given ast, with empty arguments (i.e.
static ISymbol	getInverseFunction(ISymbol headSymbol) Get the inverse function symbol if possible.
void	setUp(ISymbol symbol) Evaluate built-in rules and define Attributes for a function.

Methods inherited from class org.matheclipse.core.eval.interfaces.AbstractFunctionEvaluator

createRuleFromMethod, getPeriodicParts, getPureImaginaryPart, getRuleAST, isNegativeExpression, numericEval

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

InverseFunction

public InverseFunction()

Method Detail

evaluate

public IExpr evaluate(IAST ast)

Description copied from class: AbstractFunctionEvaluator

Symbolic evaluation of a function. ast.get(0) contains the head (i.e. the function symbol) of this abstract syntax tree (AST). ast.get(1) to ast.get(n) contains the first to n-th argument of the function.
If necessary use the methods from the Validate class to check the number or types of arguments in the evaluate method.
Note: if the symbolic evaluation isn't possible or no result is found the evaluate method returns with a null value without throwing an exception!

Specified by:

evaluate in interface IFunctionEvaluator

Specified by:

evaluate in class AbstractFunctionEvaluator

Parameters:

ast - the abstract syntax tree (AST) which should be evaluated

Returns:

the evaluated object or null, if evaluation isn't possible

See Also:

Validate

getInverseFunction

public static ISymbol getInverseFunction(ISymbol headSymbol)

Get the inverse function symbol if possible.

Parameters:

headSymbol - the symbol which represents a function name (i.e. Cos, Sin, ArcSin,...)

Returns:

null if there is no inverse function defined.

getInverseFunction

public static IAST getInverseFunction(IAST ast)

Get a new constructed inverse function AST from the given ast, with empty arguments (i.e. inverseAST.size()==1).

Parameters:

ast - the AST which represents a function (i.e. Cos(x), Sin(x), ArcSin(x),...)

Returns:

null if there is no inverse function defined.

setUp

public void setUp(ISymbol symbol)

Description copied from class: AbstractFunctionEvaluator

Evaluate built-in rules and define Attributes for a function.

Specified by:

setUp in interface IEvaluator

Overrides:

setUp in class AbstractFunctionEvaluator

Parameters:

symbol - the symbol which should be set up