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<div id="version" align=right><b>petsc-3.14.5 2021-03-03</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-3.14.5 v3.14.5 docs/manualpages/DM/DMSubDomainHookRemove.html "><small>Report Typos and Errors</small></a></div>
<A NAME="DMSubDomainHookRemove"><H1>DMSubDomainHookRemove</H1></A>
remove a callback from the list to be run when restricting a problem to the coarse grid
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscdm.h"
#include "petscdmlabel.h"
#include "petscds.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../DM/DMSubDomainHookRemove.html#DMSubDomainHookRemove">DMSubDomainHookRemove</A>(<A HREF="../DM/DM.html#DM">DM</A> global,<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> (*ddhook)(<A HREF="../DM/DM.html#DM">DM</A>,<A HREF="../DM/DM.html#DM">DM</A>,void*),<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> (*restricthook)(<A HREF="../DM/DM.html#DM">DM</A>,<A HREF="../Vec/VecScatter.html#VecScatter">VecScatter</A>,<A HREF="../Vec/VecScatter.html#VecScatter">VecScatter</A>,<A HREF="../DM/DM.html#DM">DM</A>,void*),void *ctx)
</PRE>
Logically Collective
<P>
<H3><FONT COLOR="#CC3333">Input Arguments</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>global </B></TD><TD>- global <A HREF="../DM/DM.html#DM">DM</A>
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ddhook </B></TD><TD>- function to run to pass data to the decomposition <A HREF="../DM/DM.html#DM">DM</A> upon its creation
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>restricthook </B></TD><TD>- function to run to update data on block solve (at the beginning of the block solve)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ctx </B></TD><TD>- [optional] user-defined context for provide data for the hooks (may be NULL)
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
<P>
This function is currently not available from Fortran.
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../DM/DMSubDomainHookAdd.html#DMSubDomainHookAdd">DMSubDomainHookAdd</A>(), <A HREF="../SNESFAS/SNESFASGetInterpolation.html#SNESFASGetInterpolation">SNESFASGetInterpolation</A>(), <A HREF="../SNESFAS/SNESFASGetInjection.html#SNESFASGetInjection">SNESFASGetInjection</A>(), <A HREF="../Sys/PetscObjectCompose.html#PetscObjectCompose">PetscObjectCompose</A>(), <A HREF="../Sys/PetscContainerCreate.html#PetscContainerCreate">PetscContainerCreate</A>()
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>advanced<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/dm/interface/dm.c.html#DMSubDomainHookRemove">src/dm/interface/dm.c</A>
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