la_lapack::gelss Interface Reference

GELSS: computes the minimum norm solution to a complex linear least squares problem: Minimize 2-norm(| b - A*x |). using the singular value decomposition (SVD) of A. A is an M-by-N matrix which may be rank-deficient. Several right hand side vectors b and solution vectors x can be handled in a single call; they are stored as the columns of the M-by-NRHS right hand side matrix B and the N-by-NRHS solution matrix X. The effective rank of A is determined by treating as zero those singular values which are less than RCOND times the largest singular value. More...

Public Member Functions
subroutine	cgelss (m, n, nrhs, a, lda, b, ldb, s, rcond, rank, work, lwork, rwork, info)
	la_cgelss
subroutine	dgelss (m, n, nrhs, a, lda, b, ldb, s, rcond, rank, work, lwork, info)
	la_dgelss
	la_qgelss
subroutine	sgelss (m, n, nrhs, a, lda, b, ldb, s, rcond, rank, work, lwork, info)
	la_sgelss
	la_wgelss
subroutine	zgelss (m, n, nrhs, a, lda, b, ldb, s, rcond, rank, work, lwork, rwork, info)
	la_zgelss

Detailed Description

GELSS: computes the minimum norm solution to a complex linear least squares problem: Minimize 2-norm(| b - A*x |). using the singular value decomposition (SVD) of A. A is an M-by-N matrix which may be rank-deficient. Several right hand side vectors b and solution vectors x can be handled in a single call; they are stored as the columns of the M-by-NRHS right hand side matrix B and the N-by-NRHS solution matrix X. The effective rank of A is determined by treating as zero those singular values which are less than RCOND times the largest singular value.

Member Function/Subroutine Documentation

cgelss()

subroutine la_lapack::gelss::cgelss	(	integer(ilp), intent(in)	m,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	nrhs,
		complex(sp), dimension(lda,*), intent(inout)	a,
		integer(ilp), intent(in)	lda,
		complex(sp), dimension(ldb,*), intent(inout)	b,
		integer(ilp), intent(in)	ldb,
		real(sp), dimension(*), intent(out)	s,
		real(sp), intent(in)	rcond,
		integer(ilp), intent(out)	rank,
		complex(sp), dimension(*), intent(out)	work,
		integer(ilp), intent(in)	lwork,
		real(sp), dimension(*), intent(out)	rwork,
		integer(ilp), intent(out)	info
	)

Here is the call graph for this function:

dgelss()

subroutine la_lapack::gelss::dgelss	(	integer(ilp), intent(in)	m,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	nrhs,
		real(dp), dimension(lda,*), intent(inout)	a,
		integer(ilp), intent(in)	lda,
		real(dp), dimension(ldb,*), intent(inout)	b,
		integer(ilp), intent(in)	ldb,
		real(dp), dimension(*), intent(out)	s,
		real(dp), intent(in)	rcond,
		integer(ilp), intent(out)	rank,
		real(dp), dimension(*), intent(out)	work,
		integer(ilp), intent(in)	lwork,
		integer(ilp), intent(out)	info
	)

Here is the call graph for this function:

la_cgelss()

la_lapack::gelss::la_cgelss

la_dgelss()

la_lapack::gelss::la_dgelss

la_qgelss()

la_lapack::gelss::la_qgelss

la_sgelss()

la_lapack::gelss::la_sgelss

la_wgelss()

la_lapack::gelss::la_wgelss

la_zgelss()

la_lapack::gelss::la_zgelss

sgelss()

subroutine la_lapack::gelss::sgelss	(	integer(ilp), intent(in)	m,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	nrhs,
		real(sp), dimension(lda,*), intent(inout)	a,
		integer(ilp), intent(in)	lda,
		real(sp), dimension(ldb,*), intent(inout)	b,
		integer(ilp), intent(in)	ldb,
		real(sp), dimension(*), intent(out)	s,
		real(sp), intent(in)	rcond,
		integer(ilp), intent(out)	rank,
		real(sp), dimension(*), intent(out)	work,
		integer(ilp), intent(in)	lwork,
		integer(ilp), intent(out)	info
	)

Here is the call graph for this function:

zgelss()

subroutine la_lapack::gelss::zgelss	(	integer(ilp), intent(in)	m,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	nrhs,
		complex(dp), dimension(lda,*), intent(inout)	a,
		integer(ilp), intent(in)	lda,
		complex(dp), dimension(ldb,*), intent(inout)	b,
		integer(ilp), intent(in)	ldb,
		real(dp), dimension(*), intent(out)	s,
		real(dp), intent(in)	rcond,
		integer(ilp), intent(out)	rank,
		complex(dp), dimension(*), intent(out)	work,
		integer(ilp), intent(in)	lwork,
		real(dp), dimension(*), intent(out)	rwork,
		integer(ilp), intent(out)	info
	)

Here is the call graph for this function:

---

The documentation for this interface was generated from the following file:

• la_lapack.f90