-----------------------------------------------------------------------

  Include the stat.h file to get timing statistics for the different parts
  of the Arnoldi update iteration.  An easy way to initialize all the
  timing information to zero at the beginning is by:

     call sstats  <-- symmetric code
     call sstatn  <-- nonsymmetric code
     call cstatn  <-- complex code

-----------------------------------------------------------------------

  nopx   = total number of user OP*x operations.
  nbx    = total number of user B*x operations (same as copy when B = I).
  nrorth = total number of reorthogonalization steps taken.
  nitref = total number of it. refinement steps in reorthogonalization.
  nrstrt = total number of restart steps.

-----------------------------------------------------------------------

========================================================
===  Common to both symmetric and nonsymmetric code  ===
========================================================

  tgetv0 = total time spent in generating starting vector and 
           restarted vector for the Arnoldi sequence.
  titref = total time spent in iterative refinement phase in SSAITR.
  trvec  = total time spent in computing the Ritz vectors before exit.

====================================
===  Specific to symmetric code  ===
====================================

  tsaupd = total time spent in SSAUPD.
  tsaup2 = total time spent in SSAUP2.
  tsaitr = total time spent in the basic Arnoldi iteration loop,
           including iterative refinement in SSAITR.
  tseigt = total time spent in computing the tridiagonal eigenvalue
           subproblem at each iteration.
  tsgets = total time spent in getting the shifts at each iteration.
  tsapps = total time spent in applying the shifts at each iteration.
  tsconv = total time spent in convergence test at each iteration.

=======================================
===  Specific to nonsymmetric code  ===
=======================================

  tnaupd = total time spent in SNAUPD.
  tnaup2 = total time spent in SNAUP2.
  tnaitr = total time spent in the basic Arnoldi iteration loop,
           including iterative refinement in SNAITR.
  tneigh = total time spent in computing the Hessenberg eigenvalue
           subproblem at each iteration.
  tngets = total time spent in getting the shifts at each iteration.
  tnapps = total time spent in applying the shifts at each iteration.
  tnconv = total time spent in convergence test at each iteration.

==================================
===  Specific to complex code  ===
==================================

  tcaupd = total time spent in CNAUPD.
  tcaup2 = total time spent in CNAUP2.
  tcaitr = total time spent in the basic Arnoldi iteration loop,
           including iterative refinement in CNAITR.
  tceigh = total time spent in computing the Hessenberg eigenvalue
           subproblem at each iteration.
  tcgets = total time spent in getting the shifts at each iteration.
  tcapps = total time spent in applying the shifts at each iteration.
  tcconv = total time spent in convergence test at each iteration.

==================
=== User time  ===
==================

  tmvopx = total time spent in computing Y = OP * X.
  tmvbx  = total time spent in computing Y = B * X.

=======================================================================