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<div id="version" align=right><b>petsc-3.14.5 2021-03-03</b></div>
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<A NAME="PCMGGetCoarseSpaceConstructor"><H1>PCMGGetCoarseSpaceConstructor</H1></A>
Returns the given coarse space construction method.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscksp.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../PC/PCMGGetCoarseSpaceConstructor.html#PCMGGetCoarseSpaceConstructor">PCMGGetCoarseSpaceConstructor</A>(const char name[], <A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> (**function)(<A HREF="../PC/PC.html#PC">PC</A>, <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A>, <A HREF="../DM/DM.html#DM">DM</A>, <A HREF="../KSP/KSP.html#KSP">KSP</A>, <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A>, const <A HREF="../Vec/Vec.html#Vec">Vec</A>[], <A HREF="../Vec/Vec.html#Vec">Vec</A> **))
</PRE>
Not collective
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>name </B></TD><TD>- name of the constructor
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>function </B></TD><TD>- constructor routine
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
<H3><FONT COLOR="#CC3333">Calling sequence for the routine</FONT></H3>
<pre>
my_csp(<A HREF="../PC/PC.html#PC">PC</A> pc, <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> l, <A HREF="../DM/DM.html#DM">DM</A> dm, <A HREF="../KSP/KSP.html#KSP">KSP</A> smooth, <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> Nc, const <A HREF="../Vec/Vec.html#Vec">Vec</A> initGuess[], <A HREF="../Vec/Vec.html#Vec">Vec</A> **coarseSp)
</pre>
<pre>
pc - The <A HREF="../PC/PC.html#PC">PC</A> object
</pre>
<pre>
l - The multigrid level, 0 is the coarse level
</pre>
<pre>
dm - The <A HREF="../DM/DM.html#DM">DM</A> for this level
</pre>
<pre>
smooth - The level smoother
</pre>
<pre>
Nc - The size of the coarse space
</pre>
<pre>
initGuess - Basis for an initial guess for the space
</pre>
<pre>
coarseSp - A basis for the computed coarse space
</pre>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../PC/PCMGRegisterCoarseSpaceConstructor.html#PCMGRegisterCoarseSpaceConstructor">PCMGRegisterCoarseSpaceConstructor</A>(), <A HREF="../PC/PCRegister.html#PCRegister">PCRegister</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/ksp/pc/impls/mg/mg.c.html#PCMGGetCoarseSpaceConstructor">src/ksp/pc/impls/mg/mg.c</A>
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