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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/SNES/SNESShellSetSolve.html "><small>Report Typos and Errors</small></a></div>
<A NAME="SNESShellSetSolve"><H1>SNESShellSetSolve</H1></A>
Sets routine to apply as solver
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscsnes.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../SNES/SNESShellSetSolve.html#SNESShellSetSolve">SNESShellSetSolve</A>(<A HREF="../SNES/SNES.html#SNES">SNES</A> snes,<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> (*solve)(<A HREF="../SNES/SNES.html#SNES">SNES</A>,<A HREF="../Vec/Vec.html#Vec">Vec</A>))
</PRE>
Logically Collective on <A HREF="../SNES/SNES.html#SNES">SNES</A>
<P>
<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 nonlinear solver context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>apply </B></TD><TD>- the application-provided solver routine
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Calling sequence of solve</FONT></H3>
<PRE>
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> apply (<A HREF="../SNES/SNES.html#SNES">SNES</A> snes,<A HREF="../Vec/Vec.html#Vec">Vec</A> xout)
</PRE>
<P>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>snes </B></TD><TD>- the preconditioner, get the application context with <A HREF="../SNES/SNESShellGetContext.html#SNESShellGetContext">SNESShellGetContext</A>()
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>xout </B></TD><TD>- solution vector
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
the function MUST return an error code of 0 on success and nonzero on failure.
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../SNES/SNESSHELL.html#SNESSHELL">SNESSHELL</A>, <A HREF="../SNES/SNESShellSetContext.html#SNESShellSetContext">SNESShellSetContext</A>(), <A HREF="../SNES/SNESShellGetContext.html#SNESShellGetContext">SNESShellGetContext</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/snes/impls/shell/snesshell.c.html#SNESShellSetSolve">src/snes/impls/shell/snesshell.c</A>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/snes/tutorials/ex35.c.html">src/snes/tutorials/ex35.c.html</A><BR>
<P><H3><FONT COLOR="CC3333">Implementations</FONT></H3><A HREF="../../../src/snes/impls/shell/snesshell.c.html#SNESShellSetSolve_Shell(SNES snes,PetscErrorCode (*solve)">SNESShellSetSolve_Shell(SNES snes,PetscErrorCode (*solve) in src/snes/impls/shell/snesshell.c</A><BR>
<BR><A HREF="./index.html">Index of all SNES routines</A>
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