<div dir="ltr">Try this<br><br><a href="http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Mat/MatAXPY.html">http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Mat/MatAXPY.html</a><br></div><div class="gmail_extra"><br><div class="gmail_quote">On 22 January 2016 at 00:11, wen zhao <span dir="ltr"><<a href="mailto:wen.zhao@outlook.fr" target="_blank">wen.zhao@outlook.fr</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">


<div><div dir="ltr">Hello,<br><br>I want to add to matrix, but i haven't found a function which can do this operation. Is there existe a kind of operation can do C = A + B<br><br>Thanks <br>                                    </div></div>
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