1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
<HTML>
<HEAD> <link rel="canonical" href="http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Vec/VecStrideSubSetScatter.html" />
<META NAME="GENERATOR" CONTENT="DOCTEXT">
<TITLE>VecStrideSubSetScatter</TITLE>
</HEAD>
<BODY BGCOLOR="FFFFFF">
<div id="version" align=right><b>petsc-3.7.5 2017-01-01</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-3.7.5 v3.7.5 docs/manualpages/Vec/VecStrideSubSetScatter.html "><small>Report Typos and Errors</small></a></div>
<A NAME="VecStrideSubSetScatter"><H1>VecStrideSubSetScatter</H1></A>
Scatters components from a vector into a subset of components of a multi-component vector.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscvec.h"
PetscErrorCode VecStrideSubSetScatter(Vec s,PetscInt nidx,const PetscInt idxs[],const PetscInt idxv[],Vec v,InsertMode addv)
</PRE>
Collective on <A HREF="../Vec/Vec.html#Vec">Vec</A>
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>s </B></TD><TD>- the smaller-component vector
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>nidx </B></TD><TD>- the number of indices in idx
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>idxs </B></TD><TD>- the indices of the components in the smaller-component vector, 0 <= idxs[0] ...idxs[nidx-1] < bs(s) they need not be sorted, may be null if nidx == bs(s) or is <A HREF="../Sys/PETSC_DETERMINE.html#PETSC_DETERMINE">PETSC_DETERMINE</A>
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>idxv </B></TD><TD>- the indices of the components in the larger-component vector, 0 <= idx[0] ...idx[nidx-1] < bs(v) they need not be sorted
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>addv </B></TD><TD>- one of <A HREF="../Sys/ADD_VALUES.html#ADD_VALUES">ADD_VALUES</A>,<A HREF="../Sys/INSERT_VALUES.html#INSERT_VALUES">INSERT_VALUES</A>,<A HREF="../Sys/MAX_VALUES.html#MAX_VALUES">MAX_VALUES</A>
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<DT><B>v </B> -the location where the subvector is into scattered (the multi-component vector)
<br>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
One must call <A HREF="../Vec/VecSetBlockSize.html#VecSetBlockSize">VecSetBlockSize</A>() on the vectors before this
routine to set the stride information, or use a vector created from a multicomponent <A HREF="../DM/DMDA.html#DMDA">DMDA</A>.
<P>
The parallel layout of the vector and the subvector must be the same;
<P>
Not optimized; could be easily
<P>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Vec/VecStrideNorm.html#VecStrideNorm">VecStrideNorm</A>(), <A HREF="../Vec/VecStrideGather.html#VecStrideGather">VecStrideGather</A>(), <A HREF="../Vec/VecStrideGather.html#VecStrideGather">VecStrideGather</A>(), <A HREF="../Vec/VecStrideSubSetGather.html#VecStrideSubSetGather">VecStrideSubSetGather</A>(), <A HREF="../Vec/VecStrideMin.html#VecStrideMin">VecStrideMin</A>(), <A HREF="../Vec/VecStrideMax.html#VecStrideMax">VecStrideMax</A>(), <A HREF="../Vec/VecStrideGatherAll.html#VecStrideGatherAll">VecStrideGatherAll</A>(),
<BR><A HREF="../Vec/VecStrideScatterAll.html#VecStrideScatterAll">VecStrideScatterAll</A>()
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>advanced
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/vec/vec/utils/vinv.c.html#VecStrideSubSetScatter">src/vec/vec/utils/vinv.c</A>
<BR><A HREF="./index.html">Index of all Vec routines</A>
<BR><A HREF="../../index.html">Table of Contents for all manual pages</A>
<BR><A HREF="../singleindex.html">Index of all manual pages</A>
</BODY></HTML>
|
