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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="MatOrderingType"><H1>MatOrderingType</H1></A>
String with the name of a PETSc matrix ordering
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
typedef const char* <A HREF="../Mat/MatOrderingType.html#MatOrderingType">MatOrderingType</A>;
#define MATORDERINGNATURAL "natural"
#define MATORDERINGND "nd"
#define MATORDERING1WD "1wd"
#define MATORDERINGRCM "rcm"
#define MATORDERINGQMD "qmd"
#define MATORDERINGROWLENGTH "rowlength"
#define MATORDERINGWBM "wbm"
#define MATORDERINGSPECTRAL "spectral"
#define MATORDERINGAMD "amd" /* only works if UMFPACK is installed with PETSc */
#define MATORDERINGNATURAL_OR_ND "natural_or_nd" /* special coase used for Cholesky and ICC, allows ND when AIJ matrix is used but Natural when SBAIJ is used */
#define MATORDERINGEXTERNAL "external" /* uses an ordering type internal to the factorization package */
</PRE>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
If MATORDERINGEXTERNAL is used then PETSc does not compute an ordering and utilizes one built into the factorization package
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../MatOrderings/MatGetOrdering.html#MatGetOrdering">MatGetOrdering</A>()
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>beginner<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/mat/../../include/petscmat.h.html#MatOrderingType">src/mat/../../include/petscmat.h</A>
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