const FEValuesExtractors::Vector velocities (0);
const FEValuesExtractors::Scalar pressure (dim);
- // As an extension over step-20 and step-21, we include a few
- // optimizations that make assembly much faster for this particular
- // problem. The improvements are based on the observation that we do a
- // few calculations too many times when we do as in step-20: The symmetric
- // gradient actually has <code>dofs_per_cell</code> different values per
- // quadrature point, but we extract it
- // <code>dofs_per_cell*dofs_per_cell</code> times from the FEValues object
- // - for both the loop over <code>i</code> and the inner loop over
- // <code>j</code>. In 3d, that means evaluating it $89^2=7921$ instead of
- // $89$ times, a not insignificant difference.
+ // As an extension over step-20 and step-21, we include a few optimizations
+ // that make assembly much faster for this particular problem. The
+ // improvements are based on the observation that we do a few calculations
+ // too many times when we do as in step-20: The symmetric gradient actually
+ // has <code>dofs_per_cell</code> different values per quadrature point, but
+ // we extract it <code>dofs_per_cell*dofs_per_cell</code> times from the
+ // FEValues object - for both the loop over <code>i</code> and the inner
+ // loop over <code>j</code>. In 3d, that means evaluating it $89^2=7921$
+ // instead of $89$ times, a not insignificant difference.
//
// So what we're going to do here is to avoid such repeated calculations
// by getting a vector of rank-2 tensors (and similarly for the divergence
* We can think of the parameters so arranged as a file system in which every
* parameter is a directory. The name of this directory is the name of the
* parameter, and in this directory lie files that describe the parameter.
- * These files are: - <code>value</code>: The content of this file is the
- * current value of this parameter; initially, the content of the file equals
- * the default value of the parameter. - <code>default_value</code>: The
- * content of this file is the default value value of the parameter. -
- * <code>pattern</code>: A textual representation of the pattern that
- * describes the parameter's possible values. - <code>pattern_index</code>: A
- * number that indexes the Patterns::PatternBase object that is used to
- * describe the parameter. - <code>documentation</code>: The content of this
- * file is the documentation given for a parameter as the last argument of the
+ * These files are:
+ *
+ * - <code>value</code>: The content of this file is the current value of this
+ * parameter; initially, the content of the file equals the default value of
+ * the parameter.
+ * - <code>default_value</code>: The content of this file is the default value
+ * value of the parameter.
+ * - <code>pattern</code>: A textual representation of the pattern that
+ * describes the parameter's possible values.
+ * - <code>pattern_index</code>: A number that indexes the Patterns::PatternBase
+ * object that is used to describe the parameter.
+ * - <code>documentation</code>: The content of this file is the documentation
+ * given for a parameter as the last argument of the
* ParameterHandler::declare_entry call. With the exception of the
* <code>value</code> file, the contents of files are never changed after
* declaration of a parameter.
* is
*
* - CELL_PERIST: the cell won't be refined/coarsened, but might be
- * moved to a different processor - CELL_REFINE: this cell will be
- * refined into 4/8 cells, you can not access the children (because they
- * don't exist yet) - CELL_COARSEN: the children of this cell will be
- * coarsened into the given cell (you can access the active children!)
+ * moved to a different processor
+ * - CELL_REFINE: this cell will be refined into 4/8 cells, you can not
+ * access the children (because they don't exist yet)
+ * - CELL_COARSEN: the children of this cell will be coarsened into the
+ * given cell (you can access the active children!)
*
* When unpacking the data with notify_ready_to_unpack() you can access
* the children of the cell if the status is CELL_REFINE but not for
types::manifold_id manifold_id;
/**
- * Default constructor. Sets the member variables to the following values: -
- * vertex indices to invalid values - boundary or material id zero (the
- * default for boundary or material ids) - manifold id to
- * numbers::invalid_manifold_id
+ * Default constructor. Sets the member variables to the following values:
+ *
+ * - vertex indices to invalid values
+ * - boundary or material id zero (the default for boundary or material ids)
+ * - manifold id to numbers::invalid_manifold_id
*/
CellData ();
};
/**
* A class whose operator() combines two states indicating whether we should
* continue iterating or stop, and returns a state that dominates. The rules
- * are: - If one of the two states indicates failure, return failure. -
- * Otherwise, if one of the two states indicates to continue iterating, then
- * continue iterating. - Otherwise, return success.
+ * are:
+ * - If one of the two states indicates failure, return failure.
+ * - Otherwise, if one of the two states indicates to continue iterating, then
+ * continue iterating.
+ * - Otherwise, return success.
*/
struct StateCombiner
{
projects / dealii.git / commitdiff