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<div id="version" align=right><b>petsc-3.7.5 2017-01-01</b></div>
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<A NAME="MatMFFDSetCheckh"><H1>MatMFFDSetCheckh</H1></A>
Sets a function that checks the computed h and adjusts it to satisfy some criteria
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscmat.h"
PetscErrorCode MatMFFDSetCheckh(Mat J,PetscErrorCode (*fun)(void*,Vec,Vec,PetscScalar*),void *ctx)
</PRE>
Logically Collective on <A HREF="../Mat/Mat.html#Mat">Mat</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>J </B></TD><TD>- the <A HREF="../Mat/MatMFFD.html#MatMFFD">MatMFFD</A> matrix
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>fun </B></TD><TD>- the function that checks h
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ctx </B></TD><TD>- any context needed by the function
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Options Database Keys</FONT></H3>
<DT><B>-mat_mffd_check_positivity</B> -
<br>
<P>
Notes: For example, <A HREF="../Mat/MatMFFDCheckPositivity.html#MatMFFDCheckPositivity">MatMFFDCheckPositivity</A>() insures that all entries
of U + h*a are non-negative
<P>
The function you provide is called after the default h has been computed and allows you to
modify it.
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Mat/MatMFFDCheckPositivity.html#MatMFFDCheckPositivity">MatMFFDCheckPositivity</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>advanced
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/mat/impls/mffd/mffd.c.html#MatMFFDSetCheckh">src/mat/impls/mffd/mffd.c</A>
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