ung2r Interface

public interface ung2r

UNG2R 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 cung2r(m, n, k, a, lda, tau, work, info)

Arguments

Type IntentOptional 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(out) :: info

public pure subroutine zung2r(m, n, k, a, lda, tau, work, info)

Arguments

Type IntentOptional 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(out) :: info

Module Procedures

public interface stdlib_cung2r()

Arguments

None

public interface stdlib_zung2r()

Arguments

None