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<TITLE>VecRestoreArray</TITLE>
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<div id="version" align=right><b>petsc-3.7.5 2017-01-01</b></div>
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<A NAME="VecRestoreArray"><H1>VecRestoreArray</H1></A>
Restores a vector after <A HREF="../Vec/VecGetArray.html#VecGetArray">VecGetArray</A>() has been called.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscvec.h"
PetscErrorCode VecRestoreArray(Vec x,PetscScalar **a)
</PRE>
Logically Collective on <A HREF="../Vec/Vec.html#Vec">Vec</A>
<P>
<H3><FONT COLOR="#CC3333">Input Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>x </B></TD><TD>- the vector
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>a </B></TD><TD>- location of pointer to array obtained from <A HREF="../Vec/VecGetArray.html#VecGetArray">VecGetArray</A>()
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
For regular PETSc vectors this routine does not involve any copies. For
any special vectors that do not store local vector data in a contiguous
array, this routine will copy the data back into the underlying
vector data structure from the array obtained with <A HREF="../Vec/VecGetArray.html#VecGetArray">VecGetArray</A>().
<P>
This routine actually zeros out the a pointer. This is to prevent accidental
us of the array after it has been restored. If you pass null for a it will
not zero the array pointer a.
<P>
<H3><FONT COLOR="#CC3333">Fortran Note</FONT></H3>
This routine is used differently from Fortran 77
<pre>
<A HREF="../Vec/Vec.html#Vec">Vec</A> x
</pre>
<pre>
<A HREF="../Sys/PetscScalar.html#PetscScalar">PetscScalar</A> x_array(1)
</pre>
<pre>
<A HREF="../Sys/PetscOffset.html#PetscOffset">PetscOffset</A> i_x
</pre>
<pre>
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> ierr
</pre>
<pre>
call <A HREF="../Vec/VecGetArray.html#VecGetArray">VecGetArray</A>(x,x_array,i_x,ierr)
</pre>
<pre>
</pre>
<pre>
Access first local entry in vector with
</pre>
<pre>
value = x_array(i_x + 1)
</pre>
<pre>
</pre>
<pre>
...... other code
</pre>
<pre>
call <A HREF="../Vec/VecRestoreArray.html#VecRestoreArray">VecRestoreArray</A>(x,x_array,i_x,ierr)
</pre>
<P>
See the Fortran chapter of the users manual and
petsc/src/snes/examples/tutorials/ex5f.F for details.
For Fortran 90 see <A HREF="../Vec/VecRestoreArrayF90.html#VecRestoreArrayF90">VecRestoreArrayF90</A>()
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Vec/VecGetArray.html#VecGetArray">VecGetArray</A>(), <A HREF="../Vec/VecRestoreArrayRead.html#VecRestoreArrayRead">VecRestoreArrayRead</A>(), <A HREF="../Vec/VecRestoreArrays.html#VecRestoreArrays">VecRestoreArrays</A>(), <A HREF="../Vec/VecRestoreArrayF90.html#VecRestoreArrayF90">VecRestoreArrayF90</A>(), <A HREF="../Vec/VecRestoreArrayReadF90.html#VecRestoreArrayReadF90">VecRestoreArrayReadF90</A>(), <A HREF="../Vec/VecPlaceArray.html#VecPlaceArray">VecPlaceArray</A>(), <A HREF="../Vec/VecRestoreArray2d.html#VecRestoreArray2d">VecRestoreArray2d</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>beginner
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/vec/vec/interface/rvector.c.html#VecRestoreArray">src/vec/vec/interface/rvector.c</A>
<BR><A HREF="./index.html">Index of all Vec routines</A>
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