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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="TSDiscGradGetFormulation"><H1>TSDiscGradGetFormulation</H1></A>
Get the construction method for S, F, and grad F from the formulation u_t = S grad F
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscts.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../TS/TSDiscGradGetFormulation.html#TSDiscGradGetFormulation">TSDiscGradGetFormulation</A>(<A HREF="../TS/TS.html#TS">TS</A> ts, <A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> (**Sfunc)(<A HREF="../TS/TS.html#TS">TS</A>, <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A>, <A HREF="../Vec/Vec.html#Vec">Vec</A>, <A HREF="../Mat/Mat.html#Mat">Mat</A>, void *), <A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> (**Ffunc)(<A HREF="../TS/TS.html#TS">TS</A>, <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A>, <A HREF="../Vec/Vec.html#Vec">Vec</A>, <A HREF="../Sys/PetscScalar.html#PetscScalar">PetscScalar</A> *, void *), <A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> (**Gfunc)(<A HREF="../TS/TS.html#TS">TS</A>, <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A>, <A HREF="../Vec/Vec.html#Vec">Vec</A>, <A HREF="../Vec/Vec.html#Vec">Vec</A>, void *))
</PRE>
Not Collective
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ts </B></TD><TD>- timestepping context
</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>Sfunc </B></TD><TD>- constructor for the S matrix from the formulation
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>Ffunc </B></TD><TD>- functional F from the formulation
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>Gfunc </B></TD><TD>- constructor for the gradient of F from the formulation
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">Calling sequence of Sfunc</FONT></H3>
<pre>
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> func(<A HREF="../TS/TS.html#TS">TS</A> ts, <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> time, <A HREF="../Vec/Vec.html#Vec">Vec</A> u, <A HREF="../Mat/Mat.html#Mat">Mat</A> S, void *)
</pre>
<P>
<H3><FONT COLOR="#CC3333">Calling sequence of Ffunc</FONT></H3>
<pre>
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> func(<A HREF="../TS/TS.html#TS">TS</A> ts, <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> time, <A HREF="../Vec/Vec.html#Vec">Vec</A> u, <A HREF="../Sys/PetscScalar.html#PetscScalar">PetscScalar</A> *F, void *)
</pre>
<P>
<H3><FONT COLOR="#CC3333">Calling sequence of Gfunc</FONT></H3>
<pre>
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> func(<A HREF="../TS/TS.html#TS">TS</A> ts, <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> time, <A HREF="../Vec/Vec.html#Vec">Vec</A> u, <A HREF="../Vec/Vec.html#Vec">Vec</A> G, void *)
</pre>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../TS/TSDiscGradSetFormulation.html#TSDiscGradSetFormulation">TSDiscGradSetFormulation</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/impls/implicit/discgrad/tsdiscgrad.c.html#TSDiscGradGetFormulation">src/ts/impls/implicit/discgrad/tsdiscgrad.c</A>
<P><H3><FONT COLOR="CC3333">Implementations</FONT></H3><A HREF="../../../src/ts/impls/implicit/discgrad/tsdiscgrad.c.html#TSDiscGradGetFormulation_DiscGrad(TS ts, PetscErrorCode (**Sfunc)(TS, PetscReal, Vec, Mat, void *), PetscErrorCode (**Ffunc)(TS, PetscReal, Vec, PetscScalar *, void *), PetscErrorCode (**Gfunc)">TSDiscGradGetFormulation_DiscGrad(TS ts, PetscErrorCode (**Sfunc)(TS, PetscReal, Vec, Mat, void *), PetscErrorCode (**Ffunc)(TS, PetscReal, Vec, PetscScalar *, void *), PetscErrorCode (**Gfunc) in src/ts/impls/implicit/discgrad/tsdiscgrad.c</A><BR>
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