zrsdd.c File Reference

#include "common.h"
#include "starsh.h"

Include dependency graph for zrsdd.c:

Functions
double *	starsh_dense_zlrrsdd (int nrows, int ncols, double _Complex *D, int ldD, double _Complex *U, int ldU, double _Complex *V, int ldV, int *rank, int maxrank, int oversample, double tol, double _Complex *work, int lwork, int *iwork)
	Randomized SVD approximation of a dense double precision matrix. More...

Detailed Description

Copyright

(c) 2017 King Abdullah University of Science and Technology (KAUST). All rights reserved.

STARS-H is a software package, provided by King Abdullah University of Science and Technology (KAUST)

Version

0.3.0

Author

Rabab Alomairy

Kadir Akbudak

Aleksandr Mikhalev

Date

2020-06-07

Function Documentation

starsh_dense_zlrrsdd()

double* starsh_dense_zlrrsdd	(	int	nrows,
		int	ncols,
		double _Complex *	D,
		int	ldD,
		double _Complex *	U,
		int	ldU,
		double _Complex *	V,
		int	ldV,
		int *	rank,
		int	maxrank,
		int	oversample,
		double	tol,
		double _Complex *	work,
		int	lwork,
		int *	iwork
	)

Randomized SVD approximation of a dense double precision matrix.

This function calls LAPACK and BLAS routines, so integer types are int instead of STARSH_int.

Parameters

[in]	nrows	Number of rows of a matrix.
[in]	ncols	Number of columns of a matrix.
[in,out]	D	Pointer to dense matrix.
[in]	ldD	leading dimensions of D.
[out]	U	Pointer to low-rank factor U.
[in]	ldU	leading dimensions of U.
[out]	V	Pointer to low-rank factor V.
[in]	ldV	leading dimensions of V.
[out]	rank	Address of rank variable.
[in]	maxrank	Maximum possible rank.
[in]	oversample	Size of oversampling subset.
[in]	tol	Relative error for approximation.
[in]	work	Working array.
[in]	lwork	Size of work array.
[in]	iwork	Temporary integer array.