ungqr Interface

public interface ungqr

UNGQR generates an M-by-N complex matrix Q with orthonormal columns, which is defined as the first N columns of a product of K elementary reflectors of order M Q = H(1) H(2) . . . H(k) as returned by CGEQRF.

Subroutines

public pure subroutine cungqr(m, n, k, a, lda, tau, work, lwork, info)

Arguments

Type	Intent	Optional	Attributes		Name
integer(kind=ilp),	intent(in)			::	m
integer(kind=ilp),	intent(in)			::	n
integer(kind=ilp),	intent(in)			::	k
complex(kind=sp),	intent(inout)			::	a(lda,*)
integer(kind=ilp),	intent(in)			::	lda
complex(kind=sp),	intent(in)			::	tau(*)
complex(kind=sp),	intent(out)			::	work(*)
integer(kind=ilp),	intent(in)			::	lwork
integer(kind=ilp),	intent(out)			::	info

public pure subroutine zungqr(m, n, k, a, lda, tau, work, lwork, info)

Arguments

Type	Intent	Optional	Attributes		Name
integer(kind=ilp),	intent(in)			::	m
integer(kind=ilp),	intent(in)			::	n
integer(kind=ilp),	intent(in)			::	k
complex(kind=dp),	intent(inout)			::	a(lda,*)
integer(kind=ilp),	intent(in)			::	lda
complex(kind=dp),	intent(in)			::	tau(*)
complex(kind=dp),	intent(out)			::	work(*)
integer(kind=ilp),	intent(in)			::	lwork
integer(kind=ilp),	intent(out)			::	info

Module Procedures

public interface stdlib_cungqr()

Arguments

None

public interface stdlib_zungqr()

Arguments

None