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   <div id="version" align=right><b>petsc-3.7.5 2017-01-01</b></div>
   <div id="bugreport" align=right><a href="mailto:petsc-maint@mcs.anl.gov?subject=Typo or Error in Documentation &body=Please describe the typo or error in the documentation: petsc-3.7.5 v3.7.5 docs/manualpages/Sys/PetscObjectGetNewTag.html "><small>Report Typos and Errors</small></a></div>
<A NAME="PetscObjectGetNewTag"><H1>PetscObjectGetNewTag</H1></A>
Gets a unique new tag from a PETSc object. All processors that share the object MUST call this routine EXACTLY the same number of times.  This tag should only be used with the current objects communicator; do NOT use it with any other MPI communicator. 
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscsys.h"   
PetscErrorCode  PetscObjectGetNewTag(PetscObject obj,PetscMPIInt *tag)
</PRE>
Collective on <A HREF="../Sys/PetscObject.html#PetscObject">PetscObject</A>
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<DT><B>obj </B> -the PETSc object; this must be cast with a (<A HREF="../Sys/PetscObject.html#PetscObject">PetscObject</A>), for example,
<A HREF="../Sys/PetscObjectGetNewTag.html#PetscObjectGetNewTag">PetscObjectGetNewTag</A>((<A HREF="../Sys/PetscObject.html#PetscObject">PetscObject</A>)mat,&amp;tag);
<br>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<DT><B>tag </B> -the new tag
<br>
<P>

<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
 <A HREF="../Sys/PetscCommGetNewTag.html#PetscCommGetNewTag">PetscCommGetNewTag</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>developer
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/sys/objects/tagm.c.html#PetscObjectGetNewTag">src/sys/objects/tagm.c</A>
<BR><A HREF="./index.html">Index of all Sys routines</A>
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