On Mon, Apr 16, 2012 at 2:05 PM, Abdul Hanan Sheikh <hanangul12 at yahoo.co.uk>wrote:
> Thanks! :) > > I have an other query. > By using VecScale on vector "x" with scalar "alpha", it overwrites the > vector "x" with "alpha \times x" . > Can we re-use the vector "x" after scaling ? > No. If you want the original vector around, use VecAXPY() instead. Matt > thanks, > > Abdul > > ------------------------------ > *From:* Shri <abhyshr at mcs.anl.gov> > *To:* Abdul Hanan Sheikh <hanangul12 at yahoo.co.uk>; PETSc users list < > petsc-users at mcs.anl.gov> > *Sent:* Monday, 16 April 2012, 19:20 > *Subject:* Re: [petsc-users] Complex Number > > > http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Sys/PetscOptionsGetScalar.html > > ------------------------------ > > Dear users n devlopers, > > My Petsc routine contans a complex number, as a parameter of my problem. > I need to provide it at the run time options, since I intend to test a > variety of parameter. > In this regard, I read that PetscScalar is the way to declare a complex > number. > If I need merely a complex number at run time option to compile a compact > routine, > any details from any examples of libraries ? > > Thanks in anticipation. > > Abdul, > > > > > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120416/0c0f08e7/attachment.htm>
