jef.dna.instructions.impl
Class FNeg

java.lang.Object
  extended by jef.dna.instructions.impl.InstructionAncestor
      extended by jef.dna.instructions.impl.FNeg
All Implemented Interfaces:
java.lang.Cloneable, Instruction, BytesCountable

public class FNeg
extends InstructionAncestor

This class maps the FNEG bytecode instruction which negates the float value popped from the top of the operans stack. The result is then pushed on the top of it.

Author:
ggiovanzana

Field Summary
 
Fields inherited from class jef.dna.instructions.impl.InstructionAncestor
logger, opCode, operands, operandsCount
 
Constructor Summary
FNeg()
          Creates a new instance of FNeg
 
Method Summary
 int updateRefs(int offset)
          This method must implement the logic necessary to update all the references to constant pool table's entries contained within the bytecode instruction.
 
Methods inherited from class jef.dna.instructions.impl.InstructionAncestor
clone, fromArray, getBytesCount, getOpCode, getOperands, getOperandsCount, setOpCode, setOperands, setOperandsCountPosticipated, toArray
 
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

FNeg

public FNeg()
Creates a new instance of FNeg

Method Detail

updateRefs

public int updateRefs(int offset)
This method must implement the logic necessary to update all the references to constant pool table's entries contained within the bytecode instruction.

Specified by:
updateRefs in interface Instruction
Overrides:
updateRefs in class InstructionAncestor
Parameters:
offset - The offset used for updating expressed as number of cpt's entries to be skipped
Returns:
int The number of processed words within the current bytecode instruction