MOEA Framework 2.12
API Specification

org.moeaframework.util.tree
Class Sign

java.lang.Object
  extended by org.moeaframework.util.tree.Node
      extended by org.moeaframework.util.tree.Sign

public class Sign
extends Node

The node for calculating the sign of a number. The sign of a number is 1 if the number is greater than zero, -1 if the number is less than zero, and 0 if the number is equal to zero. The inputs and outputs to this node are shown below:

Name Type Description
Argument 1 Number The number
Return Value Number The sign of the number

See Also:
Long.signum(long), Math.signum(double)

Constructor Summary
Sign()
          Constructs a new node for calculating the sign of a number.
 
Method Summary
 Sign copyNode()
          Returns a copy of this node, but without any children or parents assigned.
 Number evaluate(Environment environment)
          Evaluates this node in the context of the specified environment.
 
Methods inherited from class org.moeaframework.util.tree.Node
copyTree, getArgument, getArgumentType, getDepth, getFunctionAt, getFunctionAt, getMaximumHeight, getMinimumHeight, getNodeAt, getNodeAt, getNodeAt, getNumberOfArguments, getNumberOfFunctions, getNumberOfFunctions, getNumberOfNodes, getNumberOfNodes, getNumberOfNodes, getNumberOfTerminals, getNumberOfTerminals, getParent, getReturnType, getTerminalAt, getTerminalAt, isFixed, isTerminal, isValid, setArgument, setFixed, setFixedTree, size, toString
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

Sign

public Sign()
Constructs a new node for calculating the sign of a number.

Method Detail

copyNode

public Sign copyNode()
Description copied from class: Node
Returns a copy of this node, but without any children or parents assigned.

Specified by:
copyNode in class Node
Returns:
a copy of this node, but without any children or parents assigned

evaluate

public Number evaluate(Environment environment)
Description copied from class: Node
Evaluates this node in the context of the specified environment.

Specified by:
evaluate in class Node
Parameters:
environment - the execution environment
Returns:
the result of evaluating this node

MOEA Framework 2.12
API Specification

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Licensed under the GNU Lesser General Public License.
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