File: ISPairToList.html

package info (click to toggle)
petsc 3.4.2.dfsg1-8.1
  • links: PTS, VCS
  • area: main
  • in suites: jessie, jessie-kfreebsd
  • size: 129,104 kB
  • ctags: 516,422
  • sloc: ansic: 395,939; cpp: 47,201; python: 34,788; makefile: 17,193; fortran: 16,251; f90: 1,592; objc: 954; sh: 822; xml: 621; java: 381; lisp: 293; csh: 241
file content (48 lines) | stat: -rw-r--r-- 2,866 bytes parent folder | download
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
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
<HTML>
<HEAD> <link rel="canonical" href="http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/IS/ISPairToList.html" />
<META NAME="GENERATOR" CONTENT="DOCTEXT">
<TITLE>ISPairToList</TITLE>
</HEAD>
<BODY BGCOLOR="FFFFFF">
   <div id="version" align=right><b>petsc-3.4.2 2013-07-02</b></div>
<A NAME="ISPairToList"><H1>ISPairToList</H1></A>
convert an <A HREF="../IS/IS.html#IS">IS</A> pair encoding an integer map to a list of ISs. Each <A HREF="../IS/IS.html#IS">IS</A> on the output list contains the preimage for each index on the second input <A HREF="../IS/IS.html#IS">IS</A>. The ISs on the output list are constructed on the subcommunicators of the input <A HREF="../IS/IS.html#IS">IS</A> pair. Each subcommunicator corresponds to the preimage of some index j -- this subcomm contains exactly the ranks that assign some indices i to j.  This is essentially the inverse of <A HREF="../IS/ISListToPair.html#ISListToPair">ISListToPair</A>(). 
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscis.h"  
#undef  __FUNCT__
#define __FUNCT__ "ISPairToList"
PetscErrorCode ISPairToList(IS xis, IS yis, PetscInt *listlen, IS **islist)
</PRE>
Collective on indis.
<P>
<H3><FONT COLOR="#CC3333">Input arguments</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>xis </B></TD><TD>- domain <A HREF="../IS/IS.html#IS">IS</A>
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>yis </B></TD><TD>- range <A HREF="../IS/IS.html#IS">IS</A>
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output arguments</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>listlen </B></TD><TD>- length of islist
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>islist  </B></TD><TD>- list of ISs breaking up indis by color
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Note</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>xis and yis must be of the same length and have congruent communicators.</B></TD><TD>- - The resulting ISs have subcommunicators in a "deadlock-free" order (see <A HREF="../IS/ISListToPair.html#ISListToPair">ISListToPair</A>()).
</TD></TR>
<P>

<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../IS/ISListToPair.html#ISListToPair">ISListToPair</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>advanced
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/vec/is/is/utils/isdiff.c.html#ISPairToList">src/vec/is/is/utils/isdiff.c</A>
<BR><A HREF="./index.html">Index of all IS 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>