Thank you Matt. I think it's worth adding<div>to the petsc manual, along with the existing</div><div>PETSC_NULL_{INTEGER, CHARACTER, DOUBLE</div><div>SCALAR}.</div><div><br></div><div>Panruo </div><div><br><div class="gmail_quote">
On Sun, Aug 19, 2012 at 8:24 AM, Matthew Knepley <span dir="ltr"><<a href="mailto:knepley@gmail.com" target="_blank">knepley@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="HOEnZb"><div class="h5">On Sun, Aug 19, 2012 at 9:23 AM, Panruo Wu <span dir="ltr"><<a href="mailto:pwu@mymail.mines.edu" target="_blank">pwu@mymail.mines.edu</a>></span> wrote:<br></div></div><div class="gmail_quote">
<div><div class="h5"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="gmail_quote"><br>Hello PETSC developers and users,<br>
<br>
In fortran the general PETSC_NULL is not valid. How can I<br>
pass a null argument iy in function<br>
<br>
VecScatterCreate(Vec xin,IS ix,Vec yin,IS iy,VecScatter *newctx)<br>
<br>
?<br>
<br>
Thanks and regards,<br></div></blockquote><div><br></div></div></div><div>PETSC_NULL_OBJECT for a Petsc object</div><div><br></div><div> Matt</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="gmail_quote">
Panruo Wu<br>
</div><br><span class="HOEnZb"><font color="#888888">
</font></span></blockquote></div><span class="HOEnZb"><font color="#888888"><br><br clear="all"><div><br></div>-- <br>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>
-- Norbert Wiener<br>
</font></span></blockquote></div><br></div>