log Class Reference

Calculates the natural logarithm of the specified scalar field. More...

Inheritance diagram for log:
Collaboration diagram for log:

Public Member Functions

 TypeName ("log")
 Runtime type information. More...
 
 log (const word &name, const Time &runTime, const dictionary &dict)
 Construct from Time and dictionary. More...
 
virtual ~log ()
 Destructor. More...
 
virtual bool read (const dictionary &)
 Read the randomise data. More...
 
- Public Member Functions inherited from fieldExpression
 TypeName ("fieldExpression")
 Runtime type information. More...
 
 fieldExpression (const word &name, const Time &runTime, const dictionary &dict, const word &functionName, const word &defaultFieldName=word::null)
 Construct from Time and dictionary. More...
 
 fieldExpression (const fieldExpression &)=delete
 Disallow default bitwise copy construction. More...
 
virtual ~fieldExpression ()
 Destructor. More...
 
virtual wordList fields () const
 Return the field required. More...
 
virtual bool execute ()
 Calculate the result field. More...
 
virtual bool write ()
 Write the result field. More...
 
virtual bool clear ()
 Clear the result field from the objectRegistry. More...
 
void operator= (const fieldExpression &)=delete
 Disallow default bitwise assignment. More...
 
- Public Member Functions inherited from fvMeshFunctionObject
 TypeName ("fvMeshFunctionObject")
 Runtime type information. More...
 
 fvMeshFunctionObject (const word &name, const Time &runTime, const dictionary &dict)
 Construct from Time and dictionary. More...
 
 fvMeshFunctionObject (const word &name, const objectRegistry &obr, const dictionary &dict)
 Construct from the region objectRegistry and dictionary. More...
 
 fvMeshFunctionObject (const fvMeshFunctionObject &)=delete
 Disallow default bitwise copy construction. More...
 
virtual ~fvMeshFunctionObject ()
 Destructor. More...
 
void operator= (const fvMeshFunctionObject &)=delete
 Disallow default bitwise assignment. More...
 
- Public Member Functions inherited from regionFunctionObject
 TypeName ("regionFunctionObject")
 Runtime type information. More...
 
 regionFunctionObject (const word &name, const Time &runTime, const dictionary &dict)
 Construct from Time and dictionary. More...
 
 regionFunctionObject (const word &name, const objectRegistry &obr, const dictionary &dict)
 Construct from the region objectRegistry and dictionary. More...
 
 regionFunctionObject (const regionFunctionObject &)=delete
 Disallow default bitwise copy construction. More...
 
virtual ~regionFunctionObject ()
 Destructor. More...
 
void operator= (const regionFunctionObject &)=delete
 Disallow default bitwise assignment. More...
 
- Public Member Functions inherited from functionObject
 ClassName ("functionObject")
 
virtual const wordtype () const =0
 Runtime type information. More...
 
 declareRunTimeSelectionTable (autoPtr, functionObject, dictionary,(const word &name, const Time &runTime, const dictionary &dict),(name, runTime, dict))
 
 functionObject (const word &name, const Time &runTime)
 Construct from components. More...
 
autoPtr< functionObjectclone () const
 Return clone. More...
 
 functionObject (const functionObject &)=delete
 Disallow default bitwise copy construction. More...
 
virtual ~functionObject ()
 Destructor. More...
 
const wordname () const
 Return the name of this functionObject. More...
 
virtual bool executeAtStart () const
 Return true if the functionObject should be executed at the start. More...
 
virtual bool end ()
 Called when Time::run() determines that the time-loop exits. More...
 
virtual scalar timeToNextAction ()
 Called by Time::adjustTimeStep(). Allows the functionObject to. More...
 
virtual scalar maxDeltaT () const
 Return the maximum time-step for stable operation. More...
 
virtual void movePoints (const polyMesh &mesh)
 Update topology using the given map. More...
 
virtual void topoChange (const polyTopoChangeMap &map)
 Update topology using the given map. More...
 
virtual void mapMesh (const polyMeshMap &)
 Update from another mesh using the given map. More...
 
virtual void distribute (const polyDistributionMap &)
 Redistribute or update using the given distribution map. More...
 
void operator= (const functionObject &)=delete
 Disallow default bitwise assignment. More...
 

Additional Inherited Members

- Static Public Member Functions inherited from functionObject
static autoPtr< functionObjectNew (const word &name, const Time &, const dictionary &)
 Select from dictionary, based on its "type" entry. More...
 
- Public Attributes inherited from functionObject
Switch log
 Switch write log to Info. More...
 
Switch executeAtStart_
 Switch write log to Info. More...
 
- Static Public Attributes inherited from functionObject
static bool postProcess
 Global post-processing mode switch. More...
 
- Protected Member Functions inherited from fvMeshFunctionObject
labelHashSet patchSet (const dictionary &, const bool optional=false) const
 Return the patch set corresponding to the patch selection entries. More...
 
- Protected Member Functions inherited from regionFunctionObject
template<class ObjectType >
bool foundObject (const word &fieldName) const
 Find field in the objectRegistry. More...
 
template<class ObjectType >
void cannotFindObject (const word &fieldName)
 Prints a warning message that fieldName cannot be found. More...
 
void cannotFindObject (const word &fieldName)
 Prints a warning message that fieldName cannot be found. More...
 
void cannotFindObjects (const wordList &fieldNames)
 Prints a warning message that fieldNames cannot be found. More...
 
template<class ObjectType >
const ObjectType & lookupObject (const word &fieldName) const
 Lookup object from the objectRegistry. More...
 
template<class ObjectType >
ObjectType & lookupObjectRef (const word &fieldName)
 Lookup non-const object reference from the objectRegistry. More...
 
template<class ObjectType >
bool store (const tmp< ObjectType > &tfield)
 Store the given field in the objectRegistry. More...
 
template<class ObjectType >
bool store (const word &fieldName, const tmp< ObjectType > &tfield, bool cacheable=false)
 Store the given field in the objectRegistry under the given name. More...
 
bool writeObject (const word &fieldName)
 Write field if present in objectRegistry. More...
 
bool clearObject (const word &fieldName)
 Clear field from the objectRegistry if present. More...
 
- Protected Attributes inherited from fieldExpression
const word fieldName_
 Name of field to process. More...
 
word resultName_
 Name of result field. More...
 
- Protected Attributes inherited from fvMeshFunctionObject
const fvMeshmesh_
 Reference to the fvMesh. More...
 
- Protected Attributes inherited from regionFunctionObject
const objectRegistryobr_
 Reference to the region objectRegistry. More...
 
- Protected Attributes inherited from functionObject
const Timetime_
 Reference to time. More...
 

Detailed Description

Calculates the natural logarithm of the specified scalar field.

Performs $ln(max(x, a))$ where $x$ is the field and $a$ an optional clip to handle 0 or negative $x$. Dimension checking can optionally be suspended for this operation if $x$ is dimensioned.

Example of function object specification:

log1
{
    type            log;
    libs            ("libfieldFunctionObjects.so");
    field           p;
    clip            1e-3;
    checkDimensions no;
}

or using foamPostProcess

foamPostProcess -func 'log(p, clip=1e-3, checkDimensions=no)'
Usage
Property Description Required Default value
type Type name: log yes
clip Clip value no
checkDimensions Dimension checking switch no
See also
Foam::functionObjects::fieldExpression Foam::functionObjects::fvMeshFunctionObject
Source files

Definition at line 103 of file log.H.

Constructor & Destructor Documentation

◆ log()

log ( const word name,
const Time runTime,
const dictionary dict 
)

Construct from Time and dictionary.

Definition at line 92 of file log.C.

References dict, and log::read().

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◆ ~log()

~log ( )
virtual

Destructor.

Definition at line 110 of file log.C.

Member Function Documentation

◆ TypeName()

TypeName ( "log"  )

Runtime type information.

◆ read()

bool read ( const dictionary dict)
virtual

Read the randomise data.

Reimplemented from regionFunctionObject.

Definition at line 116 of file log.C.

References dict.

Referenced by log::log().

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The documentation for this class was generated from the following files: