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, java.io.Serializable

public class LogTwoArg
extends BinaryFunction
implements RealBinaryFunction

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

See Also:

Serialized Form

Field Summary

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

curNumberOfParameters, name, NaN, numberOfParameters

Constructor Summary

LogTwoArg()
Defaults constructor, negative real arguments result in complex results.

LogTwoArg(boolean strict)
Constructor specifying treatment of negative real values

Method Summary

java.lang.Object	eval(java.lang.Object l, java.lang.Object r)
double	evaluate(double l, double r)
java.lang.Object	log(java.lang.Object param, java.lang.Object base)

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

run

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

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 Detail

eval

public java.lang.Object eval(java.lang.Object l,
                             java.lang.Object r)
                      throws EvaluationException

Specified by:

eval in class BinaryFunction

Throws:

EvaluationException

log

public java.lang.Object log(java.lang.Object param,
                            java.lang.Object base)
                     throws EvaluationException

Throws:

EvaluationException

evaluate

public double evaluate(double l,
                       double r)

Specified by:

evaluate in interface RealBinaryFunction