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<TITLE>VecScatterFFTWToPetsc</TITLE>
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<div id="version" align=right><b>petsc-3.10.3 2018-12-18</b></div>
<div id="bugreport" align=right><a href="mailto:petsc-maint@mcs.anl.gov?subject=Typo or Error in Documentation &body=Please describe the typo or error in the documentation: petsc-3.10.3 v3.10.3 docs/manualpages/Mat/VecScatterFFTWToPetsc.html "><small>Report Typos and Errors</small></a></div>
<A NAME="VecScatterFFTWToPetsc"><H1>VecScatterFFTWToPetsc</H1></A>
<A HREF="../Sys/Converts.html#Converts">Converts</A> FFTW output to the PETSc vector.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscmat.h"
#include "petscvec.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../Mat/VecScatterFFTWToPetsc.html#VecScatterFFTWToPetsc">VecScatterFFTWToPetsc</A>(<A HREF="../Mat/Mat.html#Mat">Mat</A> A,<A HREF="../Vec/Vec.html#Vec">Vec</A> x,<A HREF="../Vec/Vec.html#Vec">Vec</A> y)
</PRE>
Collective on <A HREF="../Mat/Mat.html#Mat">Mat</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>A </B></TD><TD>- FFTW matrix
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>x </B></TD><TD>- FFTW vector
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Parameters</FONT></H3>
<DT><B>y </B> -PETSc vector
<br>
<P>
<P>
Note: While doing real transform the FFTW output of backward DFT contains extra zeros at the end of last dimension.
<A HREF="../Mat/VecScatterFFTWToPetsc.html#VecScatterFFTWToPetsc">VecScatterFFTWToPetsc</A> removes those extra zeros.
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Mat/VecScatterPetscToFFTW.html#VecScatterPetscToFFTW">VecScatterPetscToFFTW</A>()
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>intermediate<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/mat/impls/fft/fftw/fftw.c.html#VecScatterFFTWToPetsc">src/mat/impls/fft/fftw/fftw.c</A>
<P><H3><FONT COLOR="CC3333">Implementations</FONT></H3><A HREF="../../../src/mat/impls/fft/fftw/fftw.c.html#VecScatterFFTWToPetsc_FFTW">VecScatterFFTWToPetsc_FFTW in src/mat/impls/fft/fftw/fftw.c</A><BR>
<BR><A HREF="./index.html">Index of all Mat routines</A>
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