Package org.yamcs.xtce

Class MathOperation

java.lang.Object

org.yamcs.xtce.MathOperation

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

MathOperationCalibrator, TriggeredMathOperation

public class MathOperation
extends Object
implements Serializable

Postfix (aka Reverse Polish Notation (RPN)) notation is used to describe mathematical equations. It uses a stack where operands (either fixed values or ParameterInstances) are pushed onto the stack from first to last in the XML. As the operators are specified, each pops off operands as it evaluates them, and pushes the result back onto the stack. In this case postfix is used to avoid having to specify parenthesis. To convert from infix to postfix, use Dijkstra's "shunting yard" algorithm.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	MathOperation.Element
static class	MathOperation.ElementType

Constructor Summary

Constructors

Constructor	Description
MathOperation(List<MathOperation.Element> elementList)

Method Summary

Modifier and Type	Method	Description
List<MathOperation.Element>	getElementList()

Methods inherited from class java.lang.Object

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

Constructor Detail

MathOperation

public MathOperation(List<MathOperation.Element> elementList)

Method Detail

getElementList

public List<MathOperation.Element> getElementList()