SRC/dutil.c File Reference

Matrix utility functions. More...

#include <math.h>
#include "slu_ddefs.h"

Functions
void	dCreate_CompCol_Matrix (SuperMatrix *A, int m, int n, int nnz, double *nzval, int *rowind, int *colptr, Stype_t stype, Dtype_t dtype, Mtype_t mtype)
	Supernodal LU factor related.
void	dCreate_CompRow_Matrix (SuperMatrix *A, int m, int n, int nnz, double *nzval, int *colind, int *rowptr, Stype_t stype, Dtype_t dtype, Mtype_t mtype)
void	dCopy_CompCol_Matrix (SuperMatrix *A, SuperMatrix *B)
	Copy matrix A into matrix B.
void	dCreate_Dense_Matrix (SuperMatrix *X, int m, int n, double *x, int ldx, Stype_t stype, Dtype_t dtype, Mtype_t mtype)
void	dCopy_Dense_Matrix (int M, int N, double *X, int ldx, double *Y, int ldy)
void	dCreate_SuperNode_Matrix (SuperMatrix *L, int m, int n, int nnz, double *nzval, int *nzval_colptr, int *rowind, int *rowind_colptr, int *col_to_sup, int *sup_to_col, Stype_t stype, Dtype_t dtype, Mtype_t mtype)
void	dCompRow_to_CompCol (int m, int n, int nnz, double *a, int *colind, int *rowptr, double **at, int **rowind, int **colptr)
	Convert a row compressed storage into a column compressed storage.
void	dPrint_CompCol_Matrix (char *what, SuperMatrix *A)
	Routines for debugging.
void	dPrint_SuperNode_Matrix (char *what, SuperMatrix *A)
void	dPrint_Dense_Matrix (char *what, SuperMatrix *A)
void	dprint_lu_col (char *msg, int jcol, int pivrow, int *xprune, GlobalLU_t *Glu)
	Diagnostic print of column "jcol" in the U/L factor.
void	dcheck_tempv (int n, double *tempv)
	Check whether tempv[] == 0. This should be true before and after calling any numeric routines, i.e., "panel_bmod" and "column_bmod".
void	dGenXtrue (int n, int nrhs, double *x, int ldx)
void	dFillRHS (trans_t trans, int nrhs, double *x, int ldx, SuperMatrix *A, SuperMatrix *B)
	Let rhs[i] = sum of i-th row of A, so the solution vector is all 1's.
void	dfill (double *a, int alen, double dval)
	Fills a double precision array with a given value.
void	dinf_norm_error (int nrhs, SuperMatrix *X, double *xtrue)
	Check the inf-norm of the error vector.
void	dPrintPerf (SuperMatrix *L, SuperMatrix *U, mem_usage_t *mem_usage, double rpg, double rcond, double *ferr, double *berr, char *equed, SuperLUStat_t *stat)
	Print performance of the code.
	print_double_vec (char *what, int n, double *vec)

---

Detailed Description

 -- SuperLU routine (version 3.1) --
 Univ. of California Berkeley, Xerox Palo Alto Research Center,
 and Lawrence Berkeley National Lab.
 August 1, 2008

 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 dcheck_tempv	(	int	n,
		double *	tempv
	)

void dCompRow_to_CompCol	(	int	m,
		int	n,
		int	nnz,
		double *	a,
		int *	colind,
		int *	rowptr,
		double **	at,
		int **	rowind,
		int **	colptr
	)

void dCopy_CompCol_Matrix	(	SuperMatrix *	A,
		SuperMatrix *	B
	)

void dCopy_Dense_Matrix	(	int	M,
		int	N,
		double *	X,
		int	ldx,
		double *	Y,
		int	ldy
	)

Copies a two-dimensional matrix X to another matrix Y.

void dCreate_CompCol_Matrix	(	SuperMatrix *	A,
		int	m,
		int	n,
		int	nnz,
		double *	nzval,
		int *	rowind,
		int *	colptr,
		Stype_t	stype,
		Dtype_t	dtype,
		Mtype_t	mtype
	)

void dCreate_CompRow_Matrix	(	SuperMatrix *	A,
		int	m,
		int	n,
		int	nnz,
		double *	nzval,
		int *	colind,
		int *	rowptr,
		Stype_t	stype,
		Dtype_t	dtype,
		Mtype_t	mtype
	)

void dCreate_Dense_Matrix	(	SuperMatrix *	X,
		int	m,
		int	n,
		double *	x,
		int	ldx,
		Stype_t	stype,
		Dtype_t	dtype,
		Mtype_t	mtype
	)

void dCreate_SuperNode_Matrix	(	SuperMatrix *	L,
		int	m,
		int	n,
		int	nnz,
		double *	nzval,
		int *	nzval_colptr,
		int *	rowind,
		int *	rowind_colptr,
		int *	col_to_sup,
		int *	sup_to_col,
		Stype_t	stype,
		Dtype_t	dtype,
		Mtype_t	mtype
	)

void dfill	(	double *	a,
		int	alen,
		double	dval
	)

void dFillRHS	(	trans_t	trans,
		int	nrhs,
		double *	x,
		int	ldx,
		SuperMatrix *	A,
		SuperMatrix *	B
	)

void dGenXtrue	(	int	n,
		int	nrhs,
		double *	x,
		int	ldx
	)

void dinf_norm_error	(	int	nrhs,
		SuperMatrix *	X,
		double *	xtrue
	)

void dPrint_CompCol_Matrix	(	char *	what,
		SuperMatrix *	A
	)

void dPrint_Dense_Matrix	(	char *	what,
		SuperMatrix *	A
	)

void dprint_lu_col	(	char *	msg,
		int	jcol,
		int	pivrow,
		int *	xprune,
		GlobalLU_t *	Glu
	)

void dPrint_SuperNode_Matrix	(	char *	what,
		SuperMatrix *	A
	)

void dPrintPerf	(	SuperMatrix *	L,
		SuperMatrix *	U,
		mem_usage_t *	mem_usage,
		double	rpg,
		double	rcond,
		double *	ferr,
		double *	berr,
		char *	equed,
		SuperLUStat_t *	stat
	)

print_double_vec	(	char *	what,
		int	n,
		double *	vec
	)