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<div id="version" align=right><b>slepc-3.22.2 2024-12-02</b></div>
<div id="bugreport" align=right><a href="mailto:slepc-maint@upv.es?subject=Typo or Error in Documentation &body=Please describe the typo or error in the documentation: slepc-3.22.2 v3.22.2 docs/manualpages/RG/RGCheckInside.html "><small>Report Typos and Errors</small></a></div>
<H1>RGCheckInside</H1>
Determines if a set of given points are inside the region or not.
<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/RGCheckInside.html#RGCheckInside">RGCheckInside</A>(<A HREF="../RG/RG.html#RG">RG</A> rg,<A HREF="https://petsc.org/release/manualpages/Sys/PetscInt.html#PetscInt">PetscInt</A> n,<A HREF="https://petsc.org/release/manualpages/Sys/PetscScalar.html#PetscScalar">PetscScalar</A> *ar,<A HREF="https://petsc.org/release/manualpages/Sys/PetscScalar.html#PetscScalar">PetscScalar</A> *ai,<A HREF="https://petsc.org/release/manualpages/Sys/PetscInt.html#PetscInt">PetscInt</A> *inside)
</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>n </B></TD><TD> - number of points to check
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ar </B></TD><TD> - array of real parts
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ai </B></TD><TD> - array of imaginary parts
</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>inside </B></TD><TD> - array of results (1=inside, 0=on the contour, -1=outside)
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Note</FONT></H3>
The point a is expressed as a couple of <A HREF="https://petsc.org/release/manualpages/Sys/PetscScalar.html#PetscScalar">PetscScalar</A> variables ar,ai.
If built with complex scalars, the point is supposed to be stored in ar,
otherwise ar,ai contain the real and imaginary parts, respectively.
<P>
If a scaling factor was set, the points are scaled before checking.
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../RG/RGSetScale.html#RGSetScale">RGSetScale</A>(), <A HREF="../RG/RGSetComplement.html#RGSetComplement">RGSetComplement</A>()
<BR><P><B></B><H3><FONT COLOR="#883300">Level</FONT></H3>intermediate<BR>
<H3><FONT COLOR="#883300">Location</FONT></H3>
</B><A HREF="../../../src/sys/classes/rg/interface/rgbasic.c.html#RGCheckInside">src/sys/classes/rg/interface/rgbasic.c</A>
<BR><BR><A HREF="./index.html">Index of all RG routines</A>
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