NOX::StatusTest::Combo Class Reference

Arbitrary combination of status tests. More...

#include <NOX_StatusTest_Combo.H>

Inheritance diagram for NOX::StatusTest::Combo:

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Collaboration diagram for NOX::StatusTest::Combo:

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List of all members.

Public Types

 AND
 Logically "AND" together the results of the tests in this combination.
 OR
 Logically "OR" together the results of the tests in this combination.
enum  ComboType { AND, OR }
 The test can be either the AND of all the component tests, or the OR of all the component tests. More...

Public Member Functions

 Combo (ComboType t, const NOX::Utils *u=NULL)
 Constructor. Optional argument is the error stream for output.
 Combo (ComboType t, const Teuchos::RCP< Generic > &a, const NOX::Utils *u=NULL)
 Constructor with a single test.
 Combo (ComboType t, const Teuchos::RCP< Generic > &a, const Teuchos::RCP< Generic > &b, const NOX::Utils *u=NULL)
 Constructor with two tests.
virtual ComboaddStatusTest (const Teuchos::RCP< Generic > &a)
 Add another test to this combination.
virtual ~Combo ()
 Destructor.
virtual StatusType checkStatus (const NOX::Solver::Generic &problem, NOX::StatusTest::CheckType checkType)
 Tests stopping criterion.
virtual StatusType getStatus () const
 Return the result of the most recent checkStatus call.
virtual ostream & print (ostream &stream, int indent=0) const
 Output formatted description of stopping test to output stream.

Protected Member Functions

virtual void orOp (const Solver::Generic &problem, NOX::StatusTest::CheckType checkType)
 Use this for checkStatus when this is an OR type combo. Updates NOX::StatusTest::Combo::status.
virtual void andOp (const Solver::Generic &problem, NOX::StatusTest::CheckType checkType)
 Use this for checkStatus when this is an AND type combo. Updates NOX::StatusTest::Combo::status.
bool isSafe (Generic &a)
 Check whether or not it is safe to add a to this list of tests.

Detailed Description

Arbitrary combination of status tests.

In the AND (see NOX::StatusTest::Combo::ComboType) combination, the result is Unconverged (see NOX::StatusTest::StatusType) if any of the tests is Unconverged. Otherwise, the result is equal to the result of the first test in the list that is either Converged or Failed. It is not recommended to mix Converged and Failed tests in an AND combination.

In the OR combination, the result is Unconverged if all of the tests are Unconverged. Otherwise, it is the result of the first test in the list that is either Converged or Failed. Therefore, it will generally make sense to put the Failed -type tests at the end of the OR list.

Note:
We call checkStatus on every convergence test, though some may be called with the NOX::StatusTest::None option.
Author:
Tammy Kolda (SNL 8950) and Roger Pawlowski (SNL 1416)


Member Enumeration Documentation

enum NOX::StatusTest::Combo::ComboType

The test can be either the AND of all the component tests, or the OR of all the component tests.

Enumerator:
AND  Logically "AND" together the results of the tests in this combination.
OR  Logically "OR" together the results of the tests in this combination.


Member Function Documentation

NOX::StatusTest::Combo & NOX::StatusTest::Combo::addStatusTest ( const Teuchos::RCP< Generic > &  a  )  [virtual]

Add another test to this combination.

Calls isSafe() to determine if it is safe to add a to the combination.

void NOX::StatusTest::Combo::andOp ( const Solver::Generic problem,
NOX::StatusTest::CheckType  checkType 
) [protected, virtual]

Use this for checkStatus when this is an AND type combo. Updates NOX::StatusTest::Combo::status.

If any tests are NOX::StatusTest::Unconverged, then the status of this test is NOX::StatusTest::Unconverged. If there is a combination of NOX::StatusTest::Failed and NOX::StatusTest::Converged in the tests that are AND'd together, the value of status for this test is set to the status of the first test it encounters. The tests are evaluated in the order that they were added to the combination.

Note:
We compute the status of all tests in the combination for the sake of completeness, even if we could determine the status of this combination test without that check.

NOX::StatusTest::StatusType NOX::StatusTest::Combo::checkStatus ( const NOX::Solver::Generic problem,
NOX::StatusTest::CheckType  checkType 
) [virtual]

Tests stopping criterion.

See addOp() and orOp() for details.

Implements NOX::StatusTest::Generic.

bool NOX::StatusTest::Combo::isSafe ( Generic a  )  [protected]

Check whether or not it is safe to add a to this list of tests.

This is necessary to avoid any infinite recursions (i.e., a test cannot own a copy of itself).

void NOX::StatusTest::Combo::orOp ( const Solver::Generic problem,
NOX::StatusTest::CheckType  checkType 
) [protected, virtual]

Use this for checkStatus when this is an OR type combo. Updates NOX::StatusTest::Combo::status.

If there is a combination of NOX::StatusTest::Failed and NOX::StatusTest::Converged in the tests that are OR'd together, the value of status for this test is set to the status of the first test it encounters which is not NOX::Status::Unconvered. The tests are evaluated in the order that they were added to the combination.

Note:
We compute the status of all tests in the combination for the sake of completeness, even if we could determine the status of this combination test without that check.


The documentation for this class was generated from the following files:
Generated on Wed May 12 21:42:00 2010 for NOX by  doxygen 1.4.7