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<TITLE>TSRHSJacobianSetReuse</TITLE>
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<div id="version" align=right><b>petsc-3.7.5 2017-01-01</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-3.7.5 v3.7.5 docs/manualpages/TS/TSRHSJacobianSetReuse.html "><small>Report Typos and Errors</small></a></div>
<A NAME="TSRHSJacobianSetReuse"><H1>TSRHSJacobianSetReuse</H1></A>
restore RHS Jacobian before re-evaluating. Without this flag, <A HREF="../TS/TS.html#TS">TS</A> will change the sign and shift the RHS Jacobian for a finite-time-step implicit solve, in which case the user function will need to recompute the entire Jacobian. The reuse flag must be set if the evaluation function will assume that the matrix entries have not been changed by the <A HREF="../TS/TS.html#TS">TS</A>.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscts.h"
PetscErrorCode TSRHSJacobianSetReuse(TS ts,PetscBool reuse)
</PRE>
Logically Collective
<P>
<H3><FONT COLOR="#CC3333">Input Arguments</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ts </B></TD><TD>- <A HREF="../TS/TS.html#TS">TS</A> context obtained from <A HREF="../TS/TSCreate.html#TSCreate">TSCreate</A>()
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>reuse </B></TD><TD>- <A HREF="../Sys/PETSC_TRUE.html#PETSC_TRUE">PETSC_TRUE</A> if the RHS Jacobian
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../TS/TSSetRHSJacobian.html#TSSetRHSJacobian">TSSetRHSJacobian</A>(), <A HREF="../TS/TSComputeRHSJacobianConstant.html#TSComputeRHSJacobianConstant">TSComputeRHSJacobianConstant</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>intermediate
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/ts/interface/ts.c.html#TSRHSJacobianSetReuse">src/ts/interface/ts.c</A>
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