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
56
57
58
59
60
|
<!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/VecMDot.html" />
<META NAME="GENERATOR" CONTENT="DOCTEXT">
<TITLE>VecMDot</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/VecMDot.html "><small>Report Typos and Errors</small></a></div>
<A NAME="VecMDot"><H1>VecMDot</H1></A>
Computes vector multiple dot products.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscvec.h"
PetscErrorCode VecMDot(Vec x,PetscInt nv,const Vec y[],PetscScalar val[])
</PRE>
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>- one vector
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>nv </B></TD><TD>- number of vectors
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>y </B></TD><TD>- array of vectors.
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<DT><B>val </B> -array of the dot products (does not allocate the array)
<br>
<P>
<H3><FONT COLOR="#CC3333">Notes for Users of Complex Numbers</FONT></H3>
For complex vectors, <A HREF="../Vec/VecMDot.html#VecMDot">VecMDot</A>() computes
<pre>
val = (x,y) = y^H x,
</pre>
where y^H denotes the conjugate transpose of y.
<P>
Use <A HREF="../Vec/VecMTDot.html#VecMTDot">VecMTDot</A>() for the indefinite form
<pre>
val = (x,y) = y^T x,
</pre>
where y^T denotes the transpose of y.
<P>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Vec/VecMTDot.html#VecMTDot">VecMTDot</A>(), <A HREF="../Vec/VecDot.html#VecDot">VecDot</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>intermediate
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/vec/vec/interface/rvector.c.html#VecMDot">src/vec/vec/interface/rvector.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>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/vec/vec/examples/tutorials/ex1.c.html">src/vec/vec/examples/tutorials/ex1.c.html</A><BR>
<A HREF="../../../src/vec/vec/examples/tutorials/ex1f.F.html">src/vec/vec/examples/tutorials/ex1f.F.html</A><BR>
<A HREF="../../../src/vec/vec/examples/tutorials/ex1f90.F.html">src/vec/vec/examples/tutorials/ex1f90.F.html</A><BR>
<A HREF="../../../src/vec/vec/examples/tutorials/ex20f90.F90.html">src/vec/vec/examples/tutorials/ex20f90.F90.html</A><BR>
</BODY></HTML>
|
