org.matheclipse.core.eval

Class PlusOp

java.lang.Object

org.matheclipse.core.eval.PlusOp

public class PlusOp
extends java.lang.Object

Plus operator for adding multiple arguments with the plus(argument) method and returning the result, with the getSum() method, if isEvaled() returns true.

See: Experiments in Hash-coded Algebraic Simplification

Constructor Summary

Constructors

Constructor and Description
PlusOp(int size) Constructor.

Method Summary

Modifier and Type	Method and Description
IExpr	getSum() Get the current evaluated result of the summation as a Plus() expression with respecting the OneIdentity attribute.
boolean	isEvaled() Test if any evaluation occurred by calling the plus() method
static IExpr	plus(IAST plusAST) Evaluate Plus(a1, a2,...)
IExpr	plus(IExpr arg) Add an argument arg to this Plus() expression.
static IExpr	plus(IExpr a1, IExpr a2) Evaluate a0 + a2.
IExpr	plusUntilPosition(IAST ast, int pos) Add the elements of the given ast from position 1 up to position pos exclusive.

Methods inherited from class java.lang.Object

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

Constructor Detail

PlusOp

public PlusOp(int size)

Constructor.

Parameters:

size - the approximated size of the resulting Plus() AST.

Method Detail

getSum

public IExpr getSum()

Get the current evaluated result of the summation as a Plus() expression with respecting the OneIdentity attribute.

Returns:

isEvaled

public boolean isEvaled()

Test if any evaluation occurred by calling the plus() method

Returns:

true if an evaluation occurred.

plus

public IExpr plus(IExpr arg)

Add an argument arg to this Plus() expression.

Parameters:

arg -

Returns:

F.Indeterminate if the result is indeterminated, F.NIL otherwise.

plusUntilPosition

public IExpr plusUntilPosition(IAST ast,
                               int pos)

Add the elements of the given ast from position 1 up to position pos exclusive.

Parameters:

ast -

position -

Returns:

plus

public static IExpr plus(IAST plusAST)

Evaluate Plus(a1, a2,...).

Parameters:

a0 -

a1 -

Returns:

plus

public static IExpr plus(IExpr a1,
                         IExpr a2)

Evaluate a0 + a2.

Parameters:

a1 -

a2 -

Returns: