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<TITLE>DMSNESCheckFromOptions</TITLE>
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<div id="version" align=right><b>petsc-3.10.3 2018-12-18</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-3.10.3 v3.10.3 docs/manualpages/SNES/DMSNESCheckFromOptions.html "><small>Report Typos and Errors</small></a></div>
<A NAME="DMSNESCheckFromOptions"><H1>DMSNESCheckFromOptions</H1></A>
Check the residual and Jacobian functions using the exact solution by outputting some diagnostic information
<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/DMSNESCheckFromOptions.html#DMSNESCheckFromOptions">DMSNESCheckFromOptions</A>(<A HREF="../SNES/SNES.html#SNES">SNES</A> snes, <A HREF="../Vec/Vec.html#Vec">Vec</A> u, <A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> (**exactFuncs)(<A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> dim, <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> time, const <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> x[], <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> Nf, <A HREF="../Sys/PetscScalar.html#PetscScalar">PetscScalar</A> *u, void *ctx), void **ctxs)
</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>snes </B></TD><TD>- the <A HREF="../SNES/SNES.html#SNES">SNES</A> object
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>u </B></TD><TD>- representative <A HREF="../SNES/SNES.html#SNES">SNES</A> vector
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>exactFuncs </B></TD><TD>- pointwise functions of the exact solution for each field
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ctxs </B></TD><TD>- contexts for the functions
</TD></TR></TABLE>
<P>
<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#DMSNESCheckFromOptions">src/snes/utils/dmplexsnes.c</A>
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