SRC/zpanel_bmod.c File Reference

Performs numeric block updates. More...

#include <stdio.h>
#include <stdlib.h>
#include "slu_zdefs.h"

Functions
void	zlsolve (int, int, doublecomplex *, doublecomplex *)
	Solves a dense UNIT lower triangular system.
void	zmatvec (int, int, int, doublecomplex *, doublecomplex *, doublecomplex *)
	Performs a dense matrix-vector multiply: Mxvec = Mxvec + M * vec.
void	zcheck_tempv ()
void	zpanel_bmod (const int m, const int w, const int jcol, const int nseg, doublecomplex *dense, doublecomplex *tempv, int *segrep, int *repfnz, GlobalLU_t *Glu, SuperLUStat_t *stat)

---

Detailed Description

 -- SuperLU routine (version 3.0) --
 Univ. of California Berkeley, Xerox Palo Alto Research Center,
 and Lawrence Berkeley National Lab.
 October 15, 2003

 Copyright (c) 1994 by Xerox Corporation.  All rights reserved.

 THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY
 EXPRESSED OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.

 Permission is hereby granted to use or copy this program for any
 purpose, provided the above notices are retained on all copies.
 Permission to modify the code and to distribute modified code is
 granted, provided the above notices are retained, and a notice that
 the code was modified is included with the above copyright notice.
 

---

Function Documentation

void zcheck_tempv

(

)

void zlsolve	(	int	ldm,
		int	ncol,
		doublecomplex *	M,
		doublecomplex *	rhs
	)

The unit lower triangular matrix is stored in a 2D array M(1:nrow,1:ncol). The solution will be returned in the rhs vector.

void zmatvec	(	int	ldm,
		int	nrow,
		int	ncol,
		doublecomplex *	M,
		doublecomplex *	vec,
		doublecomplex *	Mxvec
	)

The input matrix is M(1:nrow,1:ncol); The product is returned in Mxvec[].

void zpanel_bmod	(	const int	m,
		const int	w,
		const int	jcol,
		const int	nseg,
		doublecomplex *	dense,
		doublecomplex *	tempv,
		int *	segrep,
		int *	repfnz,
		GlobalLU_t *	Glu,
		SuperLUStat_t *	stat
	)

 Purpose
 =======

    Performs numeric block updates (sup-panel) in topological order.
    It features: col-col, 2cols-col, 3cols-col, and sup-col updates.
    Special processing on the supernodal portion of L[*,j]

    Before entering this routine, the original nonzeros in the panel 
    were already copied into the spa[m,w].

    Updated/Output parameters-
    dense[0:m-1,w]: L[*,j:j+w-1] and U[*,j:j+w-1] are returned 
    collectively in the m-by-w vector dense[*].