=====================================
Element-wise Matrix/Vector Operations                                   [TOC]
=====================================

For-Loops provides the easiest, most readable and most efficient way to do
element-wise operations.  However, in the case of matrices this requires
you to order loops depending on row and column major storage.  In FLENS you
can use special _index variables_ to iterate over a general or triangular
matrix the best order.

Example for GeMatrix
====================
:import: flens/examples/gematrix-indexvariable.cc [stripped, downloadable]

Some notes
 :import: flens/examples/gematrix-indexvariable.cc [brief]

So check out the results
 *--[SHELL]-------------------------------------------------------------------*
 |                                                                            |
 |  cd flens/examples                                                         |
 |  g++ -Wall -std=c++11 -I../.. gematrix-indexvariable.cc                    |
 |  ./a.out                                                                   |
 |                                                                            |
 *----------------------------------------------------------------------------*


Example for TrMatrix, SyMatrix, HeMatrix
========================================
:import: flens/examples/trmatrix-indexvariable.cc [stripped, downloadable]

Some notes
 :import: flens/examples/trmatrix-indexvariable.cc [brief]

So check out the results
 *--[SHELL]-------------------------------------------------------------------*
 |                                                                            |
 |  cd flens/examples                                                         |
 |  g++ -Wall -std=c++11 -I../.. trmatrix-indexvariable.cc                    |
 |  ./a.out                                                                   |
 |                                                                            |
 *----------------------------------------------------------------------------*




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