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<div id="version" align=right><b>petsc-3.14.5 2021-03-03</b></div>
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<A NAME="TSAdjointSetForward"><H1>TSAdjointSetForward</H1></A>
Trigger the tangent linear solver and initialize the forward sensitivities
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscts.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../Sensitivity/TSAdjointSetForward.html#TSAdjointSetForward">TSAdjointSetForward</A>(<A HREF="../TS/TS.html#TS">TS</A> ts,<A HREF="../Mat/Mat.html#Mat">Mat</A> didp)
</PRE>
Logically Collective on <A HREF="../TS/TS.html#TS">TS</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>ts </B></TD><TD>- the <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>didp </B></TD><TD>- the derivative of initial values w.r.t. parameters
</TD></TR></TABLE>
<P>
<P>
Notes: When computing sensitivies w.r.t. initial condition, set didp to NULL so that the solver will take it as an identity matrix mathematically. TSAdjoint does not reset the tangent linear solver automatically, <A HREF="../Sensitivity/TSAdjointResetForward.html#TSAdjointResetForward">TSAdjointResetForward</A>() should be called to reset the tangent linear solver.
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Sensitivity/TSSetCostHessianProducts.html#TSSetCostHessianProducts">TSSetCostHessianProducts</A>(), <A HREF="../Sensitivity/TSAdjointResetForward.html#TSAdjointResetForward">TSAdjointResetForward</A>()
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>intermediate<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/ts/interface/sensitivity/tssen.c.html#TSAdjointSetForward">src/ts/interface/sensitivity/tssen.c</A>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/ts/tutorials/ex20opt_p.c.html">src/ts/tutorials/ex20opt_p.c.html</A><BR>
<A HREF="../../../src/ts/tutorials/ex20opt_ic.c.html">src/ts/tutorials/ex20opt_ic.c.html</A><BR>
<BR><A HREF="./index.html">Index of all Sensitivity routines</A>
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