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<div id="version" align=right><b>slepc-3.22.2 2024-12-02</b></div>
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<H1>RGCanUseConjugates</H1>
Used in contour integral methods to determine whether half of integration points can be avoided (use their conjugates).
<H3><FONT COLOR="#883300">Synopsis</FONT></H3>
<PRE>
#include "slepcrg.h"
<A HREF="https://petsc.org/release/manualpages/Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../RG/RGCanUseConjugates.html#RGCanUseConjugates">RGCanUseConjugates</A>(<A HREF="../RG/RG.html#RG">RG</A> rg,<A HREF="https://petsc.org/release/manualpages/Sys/PetscBool.html#PetscBool">PetscBool</A> realmats,<A HREF="https://petsc.org/release/manualpages/Sys/PetscBool.html#PetscBool">PetscBool</A> *useconj)
</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>rg </B></TD><TD> - the region context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>realmats </B></TD><TD> - true if the problem matrices are real
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Output Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>useconj </B></TD><TD> - whether it is possible to use conjugates
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Notes</FONT></H3>
If some integration points are the conjugates of other points, then the
associated computational cost can be saved. This depends on the problem
matrices being real and also the region being symmetric with respect to
the horizontal axis. The result is false if using real arithmetic or
in the case of a flat region (height equal to zero).
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../RG/RGIsAxisymmetric.html#RGIsAxisymmetric">RGIsAxisymmetric</A>()
<BR><P><B></B><H3><FONT COLOR="#883300">Level</FONT></H3>developer<BR>
<H3><FONT COLOR="#883300">Location</FONT></H3>
</B><A HREF="../../../src/sys/classes/rg/interface/rgbasic.c.html#RGCanUseConjugates">src/sys/classes/rg/interface/rgbasic.c</A>
<BR><BR><A HREF="./index.html">Index of all RG routines</A>
<BR><A HREF="../../../docs/manual.html">Table of Contents for all manual pages</A>
<BR><A HREF="../singleindex.html">Index of all manual pages</A>
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