Package com.singularsys.jep.misc.functions

Class LogTwoArg

java.lang.Object

com.singularsys.jep.functions.PostfixMathCommand

com.singularsys.jep.functions.BinaryFunction

com.singularsys.jep.misc.functions.LogTwoArg

All Implemented Interfaces:

PostfixMathCommandI, RealBinaryFunction, Serializable

public class LogTwoArg
extends BinaryFunction
implements RealBinaryFunction

Logarithm function where the base is specified in the second argument.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.singularsys.jep.functions.BinaryFunction

BinaryFunction.BiFunctionWithException<T>

Field Summary

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

curNumberOfParameters, description, name, NaN, numberOfParameters

Constructor Summary

Constructors

Constructor	Description
LogTwoArg()	Defaults constructor, negative real arguments result in complex results.
LogTwoArg(boolean strict)	Constructor specifying treatment of negative real values

Method Summary

Modifier and Type	Method	Description
Object	eval(Object l, Object r)	Evaluate the function
double	evaluate(double l, double r)
Object	log(Object param, Object base)

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

instanceOf, instanceOf, instanceOf, instanceOf, run

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

asArray, asBool, asDouble, asInt, asLong, asStrictInt, asString, asType, checkNumberOfParameters, getDescription, getDescription, getDescriptionWithType, getName, getNumberOfParameters, setCurNumberOfParameters, setDescription, setName, toString, toString

Methods inherited from class java.lang.Object

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

Constructor Details

LogTwoArg

public LogTwoArg(boolean strict)

Constructor specifying treatment of negative real values

Parameters:

strict - if true negative real arguments return NaN, otherwise complex results are returned

LogTwoArg

public LogTwoArg()

Defaults constructor, negative real arguments result in complex results.

Method Details

eval

public Object eval(Object l,
 Object r)
            throws EvaluationException

Description copied from class: BinaryFunction

Evaluate the function

Specified by:

eval in class BinaryFunction

Parameters:

l - lhs argument

r - rhs argument

Returns:

the results

Throws:

EvaluationException - if the function cannot be evaluated.

log

public Object log(Object param,
 Object base)
           throws EvaluationException

Throws:

EvaluationException

evaluate

public double evaluate(double l,
 double r)

Specified by:

evaluate in interface RealBinaryFunction