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# sc::SCElementOp Class Reference

Objects of class SCElementOp are used to perform operations on the elements of matrices. More...

`#include <elemop.h>`

Inheritance diagram for sc::SCElementOp:

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Collaboration diagram for sc::SCElementOp:

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List of all members.

## Public Methods

| SCElementOp ()
| SCElementOp (StateIn &s)
virtual | ~SCElementOp ()
virtual int | has_collect ()
| If duplicates of the SCElementOp exist (that is, there is more than one node), then if has_collect returns nonzero then collect is called with a MessageGrp reference after all of the blocks have been processed. More...
virtual void | defer_collect (int)
virtual void | collect (const Ref< MessageGrp > &)
virtual int | has_side_effects ()
| By default this returns nonzero. More...
virtual void | process (SCMatrixBlockIter &)=0
| This is the fallback routine to process blocks and is called by process_spec members that are not overridden.
void | process_base (SCMatrixBlock *block)
| Lazy matrix implementors can call this member when the type of block specialization is unknown. More...
virtual void | process_spec_rect (SCMatrixRectBlock *)
| Matrices should call these members when the type of block is known. More...
virtual void | process_spec_ltri (SCMatrixLTriBlock *)
virtual void | process_spec_diag (SCMatrixDiagBlock *)
virtual void | process_spec_vsimp (SCVectorSimpleBlock *)
virtual void | process_spec_rectsub (SCMatrixRectSubBlock *)
virtual void | process_spec_ltrisub (SCMatrixLTriSubBlock *)
virtual void | process_spec_diagsub (SCMatrixDiagSubBlock *)
virtual void | process_spec_vsimpsub (SCVectorSimpleSubBlock *)

## Detailed Description

Objects of class SCElementOp are used to perform operations on the elements of matrices.

When the SCElementOp object is given to the element_op member of a matrix, each block the matrix is passed to one of the process, process_base, or process_base members.

## Member Function Documentation

virtual int sc::SCElementOp::has_collect | ( |  | ) | `[virtual]`

If duplicates of the SCElementOp exist (that is, there is more than one node), then if has_collect returns nonzero then collect is called with a MessageGrp reference after all of the blocks have been processed.

The default return value of has_collect is 0 and collect's default action is do nothing. If defer_collect member is called with nonzero, collect will do nothing (this is only used by the blocked matrices).

virtual int sc::SCElementOp::has_side_effects | ( |  | ) | `[virtual]`

| By default this returns nonzero. If the ElementOp specialization will change any elements of the matrix, then this must be overridden to return nonzero.

void sc::SCElementOp::process_base | ( | SCMatrixBlock * | block | ) |

| Lazy matrix implementors can call this member when the type of block specialization is unknown. However, this will attempt to dynamic_cast block to a block specialization and will thus be less efficient.

virtual void sc::SCElementOp::process_spec_rect | ( | SCMatrixRectBlock * |  | ) | `[virtual]`

| Matrices should call these members when the type of block is known. ElementOp specializations should override these when efficiency is important, since these give the most efficient access to the elements of the block.

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

- elemop.h