1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
<HTML>
<HEAD> <link rel="canonical" href="http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/DM/DMGetDefaultConstraints.html" />
<META NAME="GENERATOR" CONTENT="DOCTEXT">
<TITLE>DMGetDefaultConstraints</TITLE>
</HEAD>
<BODY BGCOLOR="FFFFFF">
<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/DMGetDefaultConstraints.html "><small>Report Typos and Errors</small></a></div>
<A NAME="DMGetDefaultConstraints"><H1>DMGetDefaultConstraints</H1></A>
Get the <A HREF="../PetscSection/PetscSection.html#PetscSection">PetscSection</A> and <A HREF="../Mat/Mat.html#Mat">Mat</A> that specify the local constraint interpolation. See <A HREF="../DM/DMSetDefaultConstraints.html#DMSetDefaultConstraints">DMSetDefaultConstraints</A>() for a description of the purpose of constraint interpolation.
<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/DMGetDefaultConstraints.html#DMGetDefaultConstraints">DMGetDefaultConstraints</A>(<A HREF="../DM/DM.html#DM">DM</A> dm, <A HREF="../PetscSection/PetscSection.html#PetscSection">PetscSection</A> *section, <A HREF="../Mat/Mat.html#Mat">Mat</A> *mat)
</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>dm </B></TD><TD>- The <A HREF="../DM/DM.html#DM">DM</A>
</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>section </B></TD><TD>- The <A HREF="../PetscSection/PetscSection.html#PetscSection">PetscSection</A> describing the range of the constraint matrix: relates rows of the constraint matrix to dofs of the default section. Returns NULL if there are no local constraints.
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>mat </B></TD><TD>- The <A HREF="../Mat/Mat.html#Mat">Mat</A> that interpolates local constraints: its width should be the layout size of the default section. Returns NULL if there are no local constraints.
</TD></TR></TABLE>
<P>
<P>
Note: This gets borrowed references, so the user should not destroy the <A HREF="../PetscSection/PetscSection.html#PetscSection">PetscSection</A> or the <A HREF="../Mat/Mat.html#Mat">Mat</A>.
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../DM/DMSetDefaultConstraints.html#DMSetDefaultConstraints">DMSetDefaultConstraints</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#DMGetDefaultConstraints">src/dm/interface/dm.c</A>
<BR><A HREF="./index.html">Index of all DM routines</A>
<BR><A HREF="../../index.html">Table of Contents for all manual pages</A>
<BR><A HREF="../singleindex.html">Index of all manual pages</A>
</BODY></HTML>
|
