zequil_batch.c File Reference

#include "superlu_zdefs.h"

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Functions
int	zequil_batch (superlu_dist_options_t *options, int batchCount, int m, int n, handle_t *SparseMatrix_handles, double **ReqPtr, double **CeqPtr, DiagScale_t *DiagScale)
	Equilibrate the systems using the LAPACK-style algorithm. More...

Detailed Description

Copyright (c) 2003, The Regents of the University of California, through Lawrence Berkeley National Laboratory (subject to receipt of any required approvals from U.S. Dept. of Energy)

All rights reserved.

The source code is distributed under BSD license, see the file License.txt at the top-level directory.

Function Documentation

zequil_batch()

int zequil_batch	(	superlu_dist_options_t *	options,
		int	batchCount,
		int	m,
		int	n,
		handle_t *	SparseMatrix_handles,
		double **	ReqPtr,
		double **	CeqPtr,
		DiagScale_t *	DiagScale
	)

Equilibrate the systems using the LAPACK-style algorithm.

Parameters

[in]	options	solver options
[in]	batchCount	number of matrices in the batch
[in]	m	row dimension of the matrices
[in]	n	column dimension of the matrices
[in,out]	SparseMatrix_handles	pointers to the matrices in the batch, each pointing to the actual stoage in CSC format On entry, the original matrices On exit, each matrix may be overwritten by diag(R)*A*diag(C)
[out]	ReqPtr	pointers to row scaling vectors (allocated internally)
[out]	CeqPtr	pointers to column scaling vectors (allocated internally)
[in,out]	DiagScale	arrays indicating how each system is equilibrated: {ROW, COL, BOTH}

Return value i: = 0: successful exit > 0: indicates the first matrix in the batch has zero row or column if i <= m: the i-th row of A is exactly zero if i > m: the (i-m)-th column of A is exactly zero

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