VecRestoreArray

Matthew Knepley knepley at gmail.com
Sun Mar 1 10:35:59 CST 2009


On Sun, Mar 1, 2009 at 10:07 AM, Yixun Liu <enjoywm at cs.wm.edu> wrote:

> Hi,
> Is VecRestoreArray used to let the vector can be freed correctly?


This is for safety, so someone does not change values in the middle of a
VecDot() for instance.


>
> If I use VecGetArray to get a pointer and then change some values, are
> they changed in the vector?


Yes.

   Matt


>
> Thanks.
>
> Yixun
>
-- 
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
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