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
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
<HTML>
<HEAD>
<META NAME="GENERATOR" CONTENT="DOCTEXT">
<TITLE>MatCholeskyCheckShift_inline</TITLE>
</HEAD>
<BODY BGCOLOR="FFFFFF">
<A NAME="MatCholeskyCheckShift_inline"><H1>MatCholeskyCheckShift_inline</H1></A>
shift the diagonals when zero pivot is detected on Cholesky factor
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#define MatCholeskyCheckShift_inline(info,sctx,row,newshift) 0; \
</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>info </B></TD><TD>- information about the matrix factorization
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>sctx </B></TD><TD>- pointer to the struct CholeskyShift_Ctx
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>row </B></TD><TD>- pivot row
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>newshift </B></TD><TD>- 0: shift is unchanged; 1: shft is updated; -1: zeropivot
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Note: Unlike in the ILU case there is no exit condition on nshift</FONT></H3>
we increase the shift until it converges. There is no guarantee that
this algorithm converges faster or slower, or is better or worse
than the ILU algorithm.
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>developer
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/mat/matimpl.h.html#MatCholeskyCheckShift_inline">src/mat/matimpl.h</A>
<BR><A HREF="./index.html">Index of all Mat 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>
|
