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<TITLE>PCFactorReorderForNonzeroDiagonal</TITLE>
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<div id="version" align=right><b>petsc-3.10.3 2018-12-18</b></div>
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<A NAME="PCFactorReorderForNonzeroDiagonal"><H1>PCFactorReorderForNonzeroDiagonal</H1></A>
reorders rows/columns of matrix to remove zeros from diagonal
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscpc.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../PC/PCFactorReorderForNonzeroDiagonal.html#PCFactorReorderForNonzeroDiagonal">PCFactorReorderForNonzeroDiagonal</A>(<A HREF="../PC/PC.html#PC">PC</A> pc,<A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> rtol)
</PRE>
Logically Collective on <A HREF="../PC/PC.html#PC">PC</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>pc </B></TD><TD>- the preconditioner context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>tol </B></TD><TD>- diagonal entries smaller than this in absolute value are considered zero
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Options Database Key</FONT></H3>
<DT><B>-pc_factor_nonzeros_along_diagonal <tol></B> -
<br>
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
<A HREF="../PC/PC.html#PC">PC</A>, set, factorization, direct, fill
<BR>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../PC/PCFactorSetFill.html#PCFactorSetFill">PCFactorSetFill</A>(), PCFactorSetShiftNonzero(), <A HREF="../PC/PCFactorSetZeroPivot.html#PCFactorSetZeroPivot">PCFactorSetZeroPivot</A>(), <A HREF="../Mat/MatReorderForNonzeroDiagonal.html#MatReorderForNonzeroDiagonal">MatReorderForNonzeroDiagonal</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/ksp/pc/impls/factor/factor.c.html#PCFactorReorderForNonzeroDiagonal">src/ksp/pc/impls/factor/factor.c</A>
<P><H3><FONT COLOR="CC3333">Implementations</FONT></H3><A HREF="../../../src/ksp/pc/impls/factor/ilu/ilu.c.html#PCFactorReorderForNonzeroDiagonal_ILU">PCFactorReorderForNonzeroDiagonal_ILU in src/ksp/pc/impls/factor/ilu/ilu.c</A><BR>
<A HREF="../../../src/ksp/pc/impls/factor/lu/lu.c.html#PCFactorReorderForNonzeroDiagonal_LU">PCFactorReorderForNonzeroDiagonal_LU in src/ksp/pc/impls/factor/lu/lu.c</A><BR>
<BR><A HREF="./index.html">Index of all PC routines</A>
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