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<div id="version" align=right><b>slepc-3.23.1 2025-05-01</b></div>
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<H1>BVGetArrayRead</H1>
Returns a read-only pointer to a contiguous array that contains this processor's portion of the <A HREF="../BV/BV.html#BV">BV</A> data.
<H3><FONT COLOR="#883300">Synopsis</FONT></H3>
<PRE>
#include "slepcbv.h"
<A HREF="https://petsc.org/release/manualpages/Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../BV/BVGetArrayRead.html#BVGetArrayRead">BVGetArrayRead</A>(<A HREF="../BV/BV.html#BV">BV</A> bv,const <A HREF="https://petsc.org/release/manualpages/Sys/PetscScalar.html#PetscScalar">PetscScalar</A> **a)
</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>bv </B></TD><TD> - the basis vectors context
</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>a </B></TD><TD> - location to put pointer to the array
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Notes</FONT></H3>
<A HREF="../BV/BVRestoreArrayRead.html#BVRestoreArrayRead">BVRestoreArrayRead</A>() must be called when access to the array is no
longer needed. This operation may imply a data copy, for <A HREF="../BV/BV.html#BV">BV</A> types that
do not store data contiguously in memory.
<P>
The pointer will normally point to the first entry of the first column,
but if the <A HREF="../BV/BV.html#BV">BV</A> has constraints then these go before the regular columns.
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../BV/BVRestoreArray.html#BVRestoreArray">BVRestoreArray</A>(), <A HREF="../BV/BVInsertConstraints.html#BVInsertConstraints">BVInsertConstraints</A>(), <A HREF="../BV/BVGetLeadingDimension.html#BVGetLeadingDimension">BVGetLeadingDimension</A>(), <A HREF="../BV/BVGetArray.html#BVGetArray">BVGetArray</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/bv/interface/bvbasic.c.html#BVGetArrayRead">src/sys/classes/bv/interface/bvbasic.c</A>
<BR><BR><A HREF="./index.html">Index of all BV 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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