la_lapack::ptcon Interface Reference

PTCON: computes the reciprocal of the condition number (in the 1-norm) of a complex Hermitian positive definite tridiagonal matrix using the factorization A = L*D*L**H or A = U**H*D*U computed by CPTTRF. Norm(inv(A)) is computed by a direct method, and the reciprocal of the condition number is computed as RCOND = 1 / (ANORM * norm(inv(A))). More...

Public Member Functions
pure subroutine	cptcon (n, d, e, anorm, rcond, rwork, info)
	la_cptcon
pure subroutine	dptcon (n, d, e, anorm, rcond, work, info)
	la_dptcon
	la_qptcon
pure subroutine	sptcon (n, d, e, anorm, rcond, work, info)
	la_sptcon
	la_wptcon
pure subroutine	zptcon (n, d, e, anorm, rcond, rwork, info)
	la_zptcon

Detailed Description

PTCON: computes the reciprocal of the condition number (in the 1-norm) of a complex Hermitian positive definite tridiagonal matrix using the factorization A = L*D*L**H or A = U**H*D*U computed by CPTTRF. Norm(inv(A)) is computed by a direct method, and the reciprocal of the condition number is computed as RCOND = 1 / (ANORM * norm(inv(A))).

Member Function/Subroutine Documentation

cptcon()

pure subroutine la_lapack::ptcon::cptcon	(	integer(ilp), intent(in)	n,
		real(sp), dimension(*), intent(in)	d,
		complex(sp), dimension(*), intent(in)	e,
		real(sp), intent(in)	anorm,
		real(sp), intent(out)	rcond,
		real(sp), dimension(*), intent(out)	rwork,
		integer(ilp), intent(out)	info
	)

dptcon()

pure subroutine la_lapack::ptcon::dptcon	(	integer(ilp), intent(in)	n,
		real(dp), dimension(*), intent(in)	d,
		real(dp), dimension(*), intent(in)	e,
		real(dp), intent(in)	anorm,
		real(dp), intent(out)	rcond,
		real(dp), dimension(*), intent(out)	work,
		integer(ilp), intent(out)	info
	)

la_cptcon()

la_lapack::ptcon::la_cptcon

la_dptcon()

la_lapack::ptcon::la_dptcon

la_qptcon()

la_lapack::ptcon::la_qptcon

la_sptcon()

la_lapack::ptcon::la_sptcon

la_wptcon()

la_lapack::ptcon::la_wptcon

la_zptcon()

la_lapack::ptcon::la_zptcon

sptcon()

pure subroutine la_lapack::ptcon::sptcon	(	integer(ilp), intent(in)	n,
		real(sp), dimension(*), intent(in)	d,
		real(sp), dimension(*), intent(in)	e,
		real(sp), intent(in)	anorm,
		real(sp), intent(out)	rcond,
		real(sp), dimension(*), intent(out)	work,
		integer(ilp), intent(out)	info
	)

zptcon()

pure subroutine la_lapack::ptcon::zptcon	(	integer(ilp), intent(in)	n,
		real(dp), dimension(*), intent(in)	d,
		complex(dp), dimension(*), intent(in)	e,
		real(dp), intent(in)	anorm,
		real(dp), intent(out)	rcond,
		real(dp), dimension(*), intent(out)	rwork,
		integer(ilp), intent(out)	info
	)

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

• la_lapack.f90