org.matheclipse.core.reflection.system

Class Floor

java.lang.Object

org.matheclipse.core.eval.interfaces.AbstractFunctionEvaluator

org.matheclipse.core.reflection.system.Floor

All Implemented Interfaces:

IFunctionEvaluator, INumeric, IEvaluator

public class Floor
extends AbstractFunctionEvaluator
implements INumeric

Returns the largest (closest to positive infinity) ISignedNumber value that is not greater than this and is equal to a mathematical integer. See Wikipedia - Floor and ceiling functions

Constructor Summary

Constructors

Constructor and Description
Floor()

Method Summary

Modifier and Type	Method and Description
double	evalReal(double[] stack, int top, int size) Evaluate the function to a double number
IExpr	evaluate(IAST ast) Symbolic evaluation of a function.
IExpr	numericEval(IAST functionList) Numeric evaluation of a function.
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

Methods inherited from class java.lang.Object

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

Constructor Detail

Floor

public Floor()

Method Detail

evalReal

public double evalReal(double[] stack,
                       int top,
                       int size)

Description copied from interface: INumeric

Evaluate the function to a double number

Specified by:

evalReal in interface INumeric

Returns:

See Also:

EvalDouble

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

numericEval

public IExpr numericEval(IAST functionList)

Description copied from class: AbstractFunctionEvaluator

Numeric 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.

Specified by:

numericEval in interface IFunctionEvaluator

Overrides:

numericEval in class AbstractFunctionEvaluator

Parameters:

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

Returns:

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

See Also:

Validate

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