FindFloatEquality (SpotBugs 4.1.3 API)

java.lang.Object
- edu.umd.cs.findbugs.visitclass.BetterVisitor
- - edu.umd.cs.findbugs.visitclass.PreorderVisitor
  - - edu.umd.cs.findbugs.visitclass.AnnotationVisitor
    - - edu.umd.cs.findbugs.visitclass.DismantleBytecode
      - edu.umd.cs.findbugs.BytecodeScanningDetector
        
        edu.umd.cs.findbugs.bcel.OpcodeStackDetector
        
        edu.umd.cs.findbugs.detect.FindFloatEquality

All Implemented Interfaces:

Detector, Priorities, StatelessDetector, java.lang.Cloneable, org.apache.bcel.classfile.Visitor
```
public class FindFloatEquality
extends OpcodeStackDetector
implements StatelessDetector
```

Nested Class Summary
- Nested classes/interfaces inherited from class edu.umd.cs.findbugs.bcel.OpcodeStackDetector
  OpcodeStackDetector.WithCustomJumpInfo

Field Summary
- Fields inherited from class edu.umd.cs.findbugs.bcel.OpcodeStackDetector
  stack
- Fields inherited from class edu.umd.cs.findbugs.visitclass.DismantleBytecode
  codeBytes, lineNumberTable, M_BR, M_CP, M_INT, M_PAD, M_R, M_UINT
- Fields inherited from interface edu.umd.cs.findbugs.Priorities
  EXP_PRIORITY, HIGH_PRIORITY, IGNORE_PRIORITY, LOW_PRIORITY, NORMAL_PRIORITY

Constructor Summary

Constructors
Constructor Description

FindFloatEquality(BugReporter bugReporter)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`isZero(java.lang.Number n)`
`boolean`	`okValueToCompareAgainst(java.lang.Number n)`
`void`	`sawOpcode(int seen)`	By default, this method will not be called when stack is TOP.
`void`	`visit(org.apache.bcel.classfile.Code obj)`

Methods inherited from class edu.umd.cs.findbugs.bcel.OpcodeStackDetector
afterOpcode, beforeOpcode, getStack, isUsingCustomUserValue, visitCode

Methods inherited from class edu.umd.cs.findbugs.BytecodeScanningDetector
getClassContext, report, shouldVisitCode, visitClassContext

Methods inherited from class edu.umd.cs.findbugs.visitclass.DismantleBytecode
areOppositeBranches, atCatchBlock, getBranchFallThrough, getBranchOffset, getBranchTarget, getClassConstantOperand, getClassDescriptorOperand, getCodeByte, getConstantRefOperand, getDefaultSwitchOffset, getDottedClassConstantOperand, getFieldDescriptorOperand, getIntConstant, getLongConstant, getMaxPC, getMethodDescriptorOperand, getNameConstantOperand, getNextCodeByte, getNextOpcode, getNextPC, getOpcode, getPC, getPrevOpcode, getRefConstantOperand, getRefFieldIsStatic, getRegisterOperand, getSigConstantOperand, getStringConstantOperand, getSwitchLabels, getSwitchOffsets, getXClassOperand, getXFieldOperand, getXMethodOperand, isBranch, isMethodCall, isRegisterLoad, isRegisterStore, isRegisterStore, isReturn, isShift, isSwitch, isWideOpcode, printOpCode, sawBranchTo, sawClass, sawDouble, sawField, sawFloat, sawIMethod, sawInt, sawLong, sawMethod, sawRegister, sawString

Methods inherited from class edu.umd.cs.findbugs.visitclass.AnnotationVisitor
getAnnotationParameterAsString, getAnnotationParameterAsStringArray, visitAnnotation, visitAnnotation, visitParameterAnnotation, visitParameterAnnotation, visitSyntheticParameterAnnotation

Methods inherited from class edu.umd.cs.findbugs.visitclass.PreorderVisitor
amVisitingMainMethod, asUnsignedByte, doVisitMethod, getClassDescriptor, getClassName, getCode, getConstantPool, getDottedClassName, getDottedFieldSig, getDottedMethodSig, getDottedSuperclassName, getField, getFieldDescriptor, getFieldIsStatic, getFieldName, getFieldSig, getFullyQualifiedFieldName, getFullyQualifiedMethodName, getMethod, getMethodDescriptor, getMethodName, getMethodSig, getMethodVisitOrder, getNumberArguments, getNumberMethodArguments, getPackageName, getSizeOfSurroundingTryBlock, getSizeOfSurroundingTryBlock, getSourceFile, getStringFromIndex, getSuperclassName, getSurroundingCaughtExceptions, getSurroundingCaughtExceptions, getSurroundingTryBlock, getSurroundingTryBlock, getThisClass, getXClass, getXField, getXMethod, hasInterestingClass, hasInterestingMethod, isVisitMethodsInCallOrder, setupVisitorForClass, setVisitMethodsInCallOrder, shouldVisit, toString, visitAfter, visitAfter, visitAnnotationDefault, visitAnnotationEntry, visitBootstrapMethods, visitConstantInvokeDynamic, visitConstantMethodHandle, visitConstantMethodType, visitConstantModule, visitConstantPackage, visitConstantPool, visitEnclosingMethod, visitingField, visitingMethod, visitInnerClasses, visitJavaClass, visitLineNumberTable, visitLocalVariableTable, visitMethodParameters, visitParameterAnnotationEntry, visitStackMap, visitStackMapEntry

Methods inherited from class edu.umd.cs.findbugs.visitclass.BetterVisitor
clone, report, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visitCodeException, visitConstantClass, visitConstantDouble, visitConstantFieldref, visitConstantFloat, visitConstantInteger, visitConstantInterfaceMethodref, visitConstantLong, visitConstantMethodref, visitConstantNameAndType, visitConstantString, visitConstantUtf8, visitConstantValue, visitDeprecated, visitExceptionTable, visitField, visitInnerClass, visitLineNumber, visitLocalVariable, visitLocalVariableTypeTable, visitMethod, visitSignature, visitSourceFile, visitSynthetic, visitUnknown

Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface edu.umd.cs.findbugs.StatelessDetector
clone

Methods inherited from interface org.apache.bcel.classfile.Visitor
visitConstantDynamic, visitMethodParameter, visitModule, visitModuleExports, visitModuleMainClass, visitModuleOpens, visitModulePackages, visitModuleProvides, visitModuleRequires, visitNestHost, visitNestMembers

- Constructor Detail
  - FindFloatEquality
```
public FindFloatEquality(BugReporter bugReporter)
```
- Method Detail
  - visit
```
public void visit(org.apache.bcel.classfile.Code obj)
```
    Overrides:
    
    visit in class DismantleBytecode
  - isZero
```
public boolean isZero(java.lang.Number n)
```
  - okValueToCompareAgainst
```
public boolean okValueToCompareAgainst(java.lang.Number n)
```
  - sawOpcode
```
public void sawOpcode(int seen)
```
    Description copied from class: OpcodeStackDetector
    
    By default, this method will not be called when stack is TOP. To change this behavior, override #beforeOpcode(int) and change to return true even if stack is TOP.
    
    see Using FindBugs for Research to learn lattice and what TOP means.
    
    Specified by:
    
    sawOpcode in class OpcodeStackDetector
    
    See Also:
    
    OpcodeStackDetector.beforeOpcode(int)