Package com.singularsys.jep.functions

Class Abs

java.lang.Object

com.singularsys.jep.functions.PostfixMathCommand

com.singularsys.jep.functions.UnaryFunction

com.singularsys.jep.functions.Abs

All Implemented Interfaces:

PostfixMathCommandI, RealUnaryFunction, Serializable

Direct Known Subclasses:

BigDecAbs

public class Abs
extends UnaryFunction
implements RealUnaryFunction

Absolute value function. For Numbers, it returns the absolute value of same type, so a Double will return a Double, Integer will return an Integer. For Complex it returns the modulus.

Author:

Richard Morris

See Also:

• Serialized Form

Field Summary

Fields inherited from class com.singularsys.jep.functions.PostfixMathCommand

curNumberOfParameters, name, NaN, numberOfParameters

Constructor Summary

Constructors

Constructor	Description
Abs()

Method Summary

Modifier and Type	Method	Description
Object	abs(Object param)
Object	eval(Object arg)	Evaluate the function
double	evaluate(double val)

Methods inherited from class com.singularsys.jep.functions.UnaryFunction

instanceOf, instanceOf, run

Methods inherited from class com.singularsys.jep.functions.PostfixMathCommand

asArray, asBool, asDouble, asInt, asLong, asStrictInt, asString, checkNumberOfParameters, getName, getNumberOfParameters, setCurNumberOfParameters, setName, toString, toString

Methods inherited from class java.lang.Object

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

Constructor Details

Abs

public Abs()

Method Details

eval

public Object eval(Object arg)
            throws EvaluationException

Description copied from class: UnaryFunction

Evaluate the function

Specified by:

eval in class UnaryFunction

Parameters:

arg - the single argument passed in

Returns:

the result of the function

Throws:

EvaluationException

abs

public Object abs(Object param)
           throws EvaluationException

Throws:

EvaluationException

evaluate

public double evaluate(double val)

Specified by:

evaluate in interface RealUnaryFunction