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<div id="version" align=right><b>petsc-3.10.3 2018-12-18</b></div>
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<A NAME="DMPlexGetFaceFields"><H1>DMPlexGetFaceFields</H1></A>
Retrieve the field values values for a chunk of faces
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscdmplex.h"
#include "petscsnes.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../SNES/DMPlexGetFaceFields.html#DMPlexGetFaceFields">DMPlexGetFaceFields</A>(<A HREF="../DM/DM.html#DM">DM</A> dm, <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> fStart, <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> fEnd, <A HREF="../Vec/Vec.html#Vec">Vec</A> locX, <A HREF="../Vec/Vec.html#Vec">Vec</A> locX_t, <A HREF="../Vec/Vec.html#Vec">Vec</A> faceGeometry, <A HREF="../Vec/Vec.html#Vec">Vec</A> cellGeometry, <A HREF="../Vec/Vec.html#Vec">Vec</A> locGrad, <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> *Nface, <A HREF="../Sys/PetscScalar.html#PetscScalar">PetscScalar</A> **uL, <A HREF="../Sys/PetscScalar.html#PetscScalar">PetscScalar</A> **uR)
</PRE>
<H3><FONT COLOR="#CC3333">Input Parameters</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>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>fStart </B></TD><TD>- The first face to include
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>fEnd </B></TD><TD>- The first face to exclude
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>locX </B></TD><TD>- A local vector with the solution fields
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>locX_t </B></TD><TD>- A local vector with solution field time derivatives, or NULL
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>faceGeometry </B></TD><TD>- A local vector with face geometry
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>cellGeometry </B></TD><TD>- A local vector with cell geometry
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>locaGrad </B></TD><TD>- A local vector with field gradients, or NULL
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>Nface </B></TD><TD>- The number of faces with field values
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>uL </B></TD><TD>- The field values at the left side of the face
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>uR </B></TD><TD>- The field values at the right side of the face
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../SNES/DMPlexGetCellFields.html#DMPlexGetCellFields">DMPlexGetCellFields</A>()
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>developer<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/snes/utils/dmplexsnes.c.html#DMPlexGetFaceFields">src/snes/utils/dmplexsnes.c</A>
<BR><A HREF="./index.html">Index of all SNES routines</A>
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