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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="MatICCFactorSymbolic"><H1>MatICCFactorSymbolic</H1></A>
Performs symbolic incomplete Cholesky factorization for a symmetric matrix. Use <A HREF="../Mat/MatCholeskyFactorNumeric.html#MatCholeskyFactorNumeric">MatCholeskyFactorNumeric</A>() to complete the factorization.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscmat.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../Mat/MatICCFactorSymbolic.html#MatICCFactorSymbolic">MatICCFactorSymbolic</A>(<A HREF="../Mat/Mat.html#Mat">Mat</A> fact,<A HREF="../Mat/Mat.html#Mat">Mat</A> mat,<A HREF="../IS/IS.html#IS">IS</A> perm,const <A HREF="../Mat/MatFactorInfo.html#MatFactorInfo">MatFactorInfo</A> *info)
</PRE>
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>mat </B></TD><TD>- the matrix
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>perm </B></TD><TD>- row and column permutation
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>info </B></TD><TD>- structure containing
</TD></TR></TABLE>
<pre>
levels - number of levels of fill.
</pre>
<pre>
expected fill - as ratio of original fill.
</pre>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<DT><B>fact </B> -the factored matrix
<br>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
Most users should employ the <A HREF="../KSP/KSP.html#KSP">KSP</A> interface for linear solvers
instead of working directly with matrix algebra routines such as this.
See, e.g., <A HREF="../KSP/KSPCreate.html#KSPCreate">KSPCreate</A>().
<P>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Mat/MatCholeskyFactorNumeric.html#MatCholeskyFactorNumeric">MatCholeskyFactorNumeric</A>(), <A HREF="../Mat/MatCholeskyFactor.html#MatCholeskyFactor">MatCholeskyFactor</A>(), <A HREF="../Mat/MatFactorInfo.html#MatFactorInfo">MatFactorInfo</A>
<BR>
<P>
Developer Note: fortran interface is not autogenerated as the f90
interface defintion cannot be generated correctly [due to <A HREF="../Mat/MatFactorInfo.html#MatFactorInfo">MatFactorInfo</A>]
<P>
<P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>developer<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/mat/interface/matrix.c.html#MatICCFactorSymbolic">src/mat/interface/matrix.c</A>
<P><H3><FONT COLOR="CC3333">Implementations</FONT></H3><A HREF="../../../src/mat/impls/aij/seq/aijfact.c.html#MatICCFactorSymbolic_SeqAIJ">MatICCFactorSymbolic_SeqAIJ in src/mat/impls/aij/seq/aijfact.c</A><BR>
<A HREF="../../../src/mat/impls/aij/seq/aijfact.c.html#MatICCFactorSymbolic_SeqAIJ_inplace">MatICCFactorSymbolic_SeqAIJ_inplace in src/mat/impls/aij/seq/aijfact.c</A><BR>
<A HREF="../../../src/mat/impls/aij/seq/bas/basfactor.c.html#MatICCFactorSymbolic_SeqAIJ_Bas">MatICCFactorSymbolic_SeqAIJ_Bas in src/mat/impls/aij/seq/bas/basfactor.c</A><BR>
<A HREF="../../../src/mat/impls/aij/seq/seqcusparse/aijcusparse.cu.html#MatICCFactorSymbolic_SeqAIJCUSPARSE">MatICCFactorSymbolic_SeqAIJCUSPARSE in src/mat/impls/aij/seq/seqcusparse/aijcusparse.cu</A><BR>
<A HREF="../../../src/mat/impls/baij/seq/baijfact.c.html#MatICCFactorSymbolic_SeqBAIJ">MatICCFactorSymbolic_SeqBAIJ in src/mat/impls/baij/seq/baijfact.c</A><BR>
<A HREF="../../../src/mat/impls/sbaij/seq/sbaijfact2.c.html#MatICCFactorSymbolic_SeqSBAIJ_MSR">MatICCFactorSymbolic_SeqSBAIJ_MSR in src/mat/impls/sbaij/seq/sbaijfact2.c</A><BR>
<A HREF="../../../src/mat/impls/sbaij/seq/sbaijfact2.c.html#MatICCFactorSymbolic_SeqSBAIJ">MatICCFactorSymbolic_SeqSBAIJ in src/mat/impls/sbaij/seq/sbaijfact2.c</A><BR>
<A HREF="../../../src/mat/impls/sbaij/seq/sbaijfact2.c.html#MatICCFactorSymbolic_SeqSBAIJ_inplace">MatICCFactorSymbolic_SeqSBAIJ_inplace in src/mat/impls/sbaij/seq/sbaijfact2.c</A><BR>
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