org.matheclipse.core.eval.interfaces

Class AbstractArgMultiple

java.lang.Object

org.matheclipse.core.eval.interfaces.AbstractEvaluator

org.matheclipse.core.eval.interfaces.AbstractFunctionEvaluator

org.matheclipse.core.eval.interfaces.AbstractArg2

org.matheclipse.core.eval.interfaces.AbstractArgMultiple

All Implemented Interfaces:

IFunctionEvaluator, IEvaluator

Direct Known Subclasses:

GCD, LCM, Plus, Times

public abstract class AbstractArgMultiple
extends AbstractArg2

Constructor Summary

Constructors

Constructor and Description
AbstractArgMultiple()

Method Summary

Modifier and Type	Method and Description
IExpr	binaryOperator(IExpr o0, IExpr o1)
void	defineHashRule(IExpr lhs1, IExpr lhs2, IExpr rhs, IExpr condition) Define the rule for the Orderless operator OP.
abstract IExpr	e2IntArg(IInteger i0, IInteger i1)
IExpr	evaluate(IAST ast, EvalEngine engine) Symbolic evaluation of a function.
IAST	evaluateHashs(IAST ast)
HashedOrderlessMatcher	getHashRuleMap()
void	setUpHashRule(java.lang.String lhs1Str, java.lang.String lhs2Str, java.lang.String rhsStr)
void	setUpHashRule(java.lang.String lhs1Str, java.lang.String lhs2Str, java.lang.String rhsStr, java.lang.String conditionStr)
void	setUpHashRule2(IExpr lhs1, IExpr lhs2, IExpr rhs, IExpr condition)

Methods inherited from class org.matheclipse.core.eval.interfaces.AbstractArg2

e2ApcomplexArg, e2ApfloatArg, e2ComArg, e2DblArg, e2DblComArg, e2FraArg, e2FunArg, e2ObjArg, e2SymArg, eComFraArg, eComIntArg, eFunIntArg

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

createRuleFromMethod, getNormalizedNegativeExpression, getNormalizedNegativeExpression, getPeriodicParts, getPureImaginaryPart, getRuleAST, initSerializedRules, isNegativeExpression, setUp

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

numericEval

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractArgMultiple

public AbstractArgMultiple()

Method Detail

evaluate

public IExpr evaluate(IAST ast,
                      EvalEngine engine)

Description copied from class: AbstractFunctionEvaluator

Symbolic evaluation of a function. ast.get(0) (or alternatively ast.head()) contains the head (i.e. the function symbol) of this abstract syntax tree (AST).
From ast.arg1() to ast.get(n) the ast contains the first to n-th argument of the function (alternatively you get the first to fifth argument with the methods arg1(), arg2(),... arg5()).
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

Overrides:

evaluate in class AbstractArg2

Parameters:

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

engine - the users current evaluation engine

Returns:

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

See Also:

Validate, IExpr.head(), IAST.arg1(), IAST.arg2(), IAST.arg3()

getHashRuleMap

public HashedOrderlessMatcher getHashRuleMap()

evaluateHashs

public IAST evaluateHashs(IAST ast)

defineHashRule

public void defineHashRule(IExpr lhs1,
                           IExpr lhs2,
                           IExpr rhs,
                           IExpr condition)

Define the rule for the Orderless operator OP. OP[lhs1, lhs2, ...] := OP[rhs, ...] /; condition

Parameters:

lhs1 -

lhs2 -

rhs -

condition -

See Also:

HashedOrderlessMatcher.defineHashRule(org.matheclipse.core.interfaces.IExpr, org.matheclipse.core.interfaces.IExpr, org.matheclipse.core.interfaces.IExpr, org.matheclipse.core.interfaces.IExpr)

setUpHashRule2

public void setUpHashRule2(IExpr lhs1,
                           IExpr lhs2,
                           IExpr rhs,
                           IExpr condition)

Parameters:

lhs1 -

lhs2 -

rhs -

condition -

See Also:

HashedOrderlessMatcher.defineHashRule(org.matheclipse.core.interfaces.IExpr, org.matheclipse.core.interfaces.IExpr, org.matheclipse.core.interfaces.IExpr, org.matheclipse.core.interfaces.IExpr)

setUpHashRule

public void setUpHashRule(java.lang.String lhs1Str,
                          java.lang.String lhs2Str,
                          java.lang.String rhsStr,
                          java.lang.String conditionStr)
                   throws SyntaxError

Parameters:

lhs1Str -

lhs2Str -

rhsStr -

conditionStr -

Throws:

SyntaxError

See Also:

HashedOrderlessMatcher.defineHashRule(java.lang.String, java.lang.String, java.lang.String, java.lang.String)

setUpHashRule

public void setUpHashRule(java.lang.String lhs1Str,
                          java.lang.String lhs2Str,
                          java.lang.String rhsStr)
                   throws SyntaxError

Parameters:

lhs1Str -

lhs2Str -

rhsStr -

Throws:

SyntaxError

See Also:

HashedOrderlessMatcher.defineHashRule(java.lang.String, java.lang.String, java.lang.String)

binaryOperator

public IExpr binaryOperator(IExpr o0,
                            IExpr o1)

Overrides:

binaryOperator in class AbstractArg2

e2IntArg

public abstract IExpr e2IntArg(IInteger i0,
                               IInteger i1)

Overrides:

e2IntArg in class AbstractArg2