|
kusano |
7d535a |
|
|
kusano |
7d535a |
<meta content="text/html;charset=UTF-8" http-equiv="Content-Type">
|
|
kusano |
7d535a |
<title>SuperLU: SRC/zpivotgrowth.c File Reference</title>
|
|
kusano |
7d535a |
<link href="doxygen.css" rel="stylesheet" type="text/css">
|
|
kusano |
7d535a |
<link href="tabs.css" rel="stylesheet" type="text/css">
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
Main Page
|
|
kusano |
7d535a |
Data Structures
|
|
kusano |
7d535a |
Files
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
SRC/zpivotgrowth.c File ReferenceComputes the reciprocal pivot growth factor. More...
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
#include <math.h>
|
|
kusano |
7d535a |
#include "slu_zdefs.h"
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
Functions
|
|
kusano |
7d535a |
double zPivotGrowth (int ncols, SuperMatrix *A, int *perm_c, SuperMatrix *L, SuperMatrix *U)
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
Detailed Description
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
-- SuperLU routine (version 2.0) --
|
|
kusano |
7d535a |
Univ. of California Berkeley, Xerox Palo Alto Research Center,
|
|
kusano |
7d535a |
and Lawrence Berkeley National Lab.
|
|
kusano |
7d535a |
November 15, 1997
|
|
kusano |
7d535a |
Function Documentation
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
double zPivotGrowth
|
|
kusano |
7d535a |
(
|
|
kusano |
7d535a |
int
|
|
kusano |
7d535a |
ncols,
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
SuperMatrix *
|
|
kusano |
7d535a |
A,
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
int *
|
|
kusano |
7d535a |
perm_c,
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
SuperMatrix *
|
|
kusano |
7d535a |
L,
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
SuperMatrix *
|
|
kusano |
7d535a |
U
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
)
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
Purpose
|
|
kusano |
7d535a |
=======
|
|
kusano |
7d535a |
Compute the reciprocal pivot growth factor of the leading ncols columns
|
|
kusano |
7d535a |
of the matrix, using the formula:
|
|
kusano |
7d535a |
min_j ( max_i(abs(A_ij)) / max_i(abs(U_ij)) )
|
|
kusano |
7d535a |
Arguments
|
|
kusano |
7d535a |
=========
|
|
kusano |
7d535a |
ncols (input) int
|
|
kusano |
7d535a |
The number of columns of matrices A, L and U.
|
|
kusano |
7d535a |
A (input) SuperMatrix*
|
|
kusano |
7d535a |
Original matrix A, permuted by columns, of dimension
|
|
kusano |
7d535a |
(A->nrow, A->ncol). The type of A can be:
|
|
kusano |
7d535a |
Stype = NC; Dtype = SLU_Z; Mtype = GE.
|
|
kusano |
7d535a |
L (output) SuperMatrix*
|
|
kusano |
7d535a |
The factor L from the factorization Pr*A=L*U; use compressed row
|
|
kusano |
7d535a |
subscripts storage for supernodes, i.e., L has type:
|
|
kusano |
7d535a |
Stype = SC; Dtype = SLU_Z; Mtype = TRLU.
|
|
kusano |
7d535a |
U (output) SuperMatrix*
|
|
kusano |
7d535a |
The factor U from the factorization Pr*A*Pc=L*U. Use column-wise
|
|
kusano |
7d535a |
storage scheme, i.e., U has types: Stype = NC;
|
|
kusano |
7d535a |
Dtype = SLU_Z; Mtype = TRU.
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
<address style="text-align: right;"><small>Generated on Mon Nov 22 10:23:48 2010 for SuperLU by </small></address>
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
 1.5.5
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|