geqp3 Interface

public interface geqp3

GEQP3 computes a QR factorization with column pivoting of a real or complex M-by-N matrix A:

A * P = Q * R,

where: Q is an M-by-min(M, N) orthogonal matrix R is an min(M, N)-by-N upper triangular matrix;

Subroutines

public pure subroutine cgeqp3(m, n, a, lda, jpvt, tau, work, lwork, rwork, info)

Arguments

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

public pure subroutine dgeqp3(m, n, a, lda, jpvt, tau, work, lwork, info)

Arguments

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

public pure subroutine sgeqp3(m, n, a, lda, jpvt, tau, work, lwork, info)

Arguments

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

public pure subroutine zgeqp3(m, n, a, lda, jpvt, tau, work, lwork, rwork, info)

Arguments

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

Module Procedures

public interface stdlib_sgeqp3()

Arguments

None

public interface stdlib_dgeqp3()

Arguments

None

public interface stdlib_cgeqp3()

Arguments

None

public interface stdlib_zgeqp3()

Arguments

None