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<div id="version" align=right><b>slepc-3.22.2 2024-12-02</b></div>
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<H1>STGetMatStructure</H1>
Gets the internal <A HREF="https://petsc.org/release/manualpages/Mat/MatStructure.html#MatStructure">MatStructure</A> attribute to indicate which is the relation of the sparsity pattern of the matrices.
<H3><FONT COLOR="#883300">Synopsis</FONT></H3>
<PRE>
#include "slepcst.h"
<A HREF="https://petsc.org/release/manualpages/Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../ST/STGetMatStructure.html#STGetMatStructure">STGetMatStructure</A>(<A HREF="../ST/ST.html#ST">ST</A> st,<A HREF="https://petsc.org/release/manualpages/Mat/MatStructure.html#MatStructure">MatStructure</A> *str)
</PRE>
Not Collective
<P>
<H3><FONT COLOR="#883300">Input Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>st </B></TD><TD> - the spectral transformation context
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Output Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>str </B></TD><TD> - either <A HREF="https://petsc.org/release/manualpages/Mat/MatStructure.html#MatStructure">SAME_NONZERO_PATTERN</A>, <A HREF="https://petsc.org/release/manualpages/Mat/MatStructure.html#MatStructure">DIFFERENT_NONZERO_PATTERN</A>,
<A HREF="https://petsc.org/release/manualpages/Mat/MatStructure.html#MatStructure">SUBSET_NONZERO_PATTERN</A>, or <A HREF="https://petsc.org/release/manualpages/Mat/MatStructure.html#MatStructure">UNKNOWN_NONZERO_PATTERN</A>
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../ST/STSetMatStructure.html#STSetMatStructure">STSetMatStructure</A>(), <A HREF="../ST/STSetMatrices.html#STSetMatrices">STSetMatrices</A>(), <A HREF="https://petsc.org/release/manualpages/Mat/MatAXPY.html#MatAXPY">MatAXPY</A>()
<BR><P><B></B><H3><FONT COLOR="#883300">Level</FONT></H3>advanced<BR>
<H3><FONT COLOR="#883300">Location</FONT></H3>
</B><A HREF="../../../src/sys/classes/st/interface/stset.c.html#STGetMatStructure">src/sys/classes/st/interface/stset.c</A>
<P><H3><FONT COLOR="#883300">Examples</FONT></H3>
<A HREF="../../../src/pep/tutorials/ex40.c.html">src/pep/tutorials/ex40.c</A><BR>
<BR><BR><A HREF="./index.html">Index of all ST routines</A>
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