la_lapack::pbcon Interface Reference

PBCON: estimates the reciprocal of the condition number (in the 1-norm) of a complex Hermitian positive definite band matrix using the Cholesky factorization A = U**H*U or A = L*L**H computed by CPBTRF. An estimate is obtained for norm(inv(A)), and the reciprocal of the condition number is computed as RCOND = 1 / (ANORM * norm(inv(A))). More...

Public Member Functions
pure subroutine	cpbcon (uplo, n, kd, ab, ldab, anorm, rcond, work, rwork, info)
	la_cpbcon
pure subroutine	dpbcon (uplo, n, kd, ab, ldab, anorm, rcond, work, iwork, info)
	la_dpbcon
	la_qpbcon
pure subroutine	spbcon (uplo, n, kd, ab, ldab, anorm, rcond, work, iwork, info)
	la_spbcon
	la_wpbcon
pure subroutine	zpbcon (uplo, n, kd, ab, ldab, anorm, rcond, work, rwork, info)
	la_zpbcon

Detailed Description

PBCON: estimates the reciprocal of the condition number (in the 1-norm) of a complex Hermitian positive definite band matrix using the Cholesky factorization A = U**H*U or A = L*L**H computed by CPBTRF. An estimate is obtained for norm(inv(A)), and the reciprocal of the condition number is computed as RCOND = 1 / (ANORM * norm(inv(A))).

Member Function/Subroutine Documentation

cpbcon()

pure subroutine la_lapack::pbcon::cpbcon	(	character, intent(in)	uplo,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	kd,
		complex(sp), dimension(ldab,*), intent(in)	ab,
		integer(ilp), intent(in)	ldab,
		real(sp), intent(in)	anorm,
		real(sp), intent(out)	rcond,
		complex(sp), dimension(*), intent(out)	work,
		real(sp), dimension(*), intent(out)	rwork,
		integer(ilp), intent(out)	info )

dpbcon()

pure subroutine la_lapack::pbcon::dpbcon	(	character, intent(in)	uplo,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	kd,
		real(dp), dimension(ldab,*), intent(in)	ab,
		integer(ilp), intent(in)	ldab,
		real(dp), intent(in)	anorm,
		real(dp), intent(out)	rcond,
		real(dp), dimension(*), intent(out)	work,
		integer(ilp), dimension(*), intent(out)	iwork,
		integer(ilp), intent(out)	info )

la_cpbcon()

la_lapack::pbcon::la_cpbcon

la_dpbcon()

la_lapack::pbcon::la_dpbcon

la_qpbcon()

la_lapack::pbcon::la_qpbcon

la_spbcon()

la_lapack::pbcon::la_spbcon

la_wpbcon()

la_lapack::pbcon::la_wpbcon

la_zpbcon()

la_lapack::pbcon::la_zpbcon

spbcon()

pure subroutine la_lapack::pbcon::spbcon	(	character, intent(in)	uplo,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	kd,
		real(sp), dimension(ldab,*), intent(in)	ab,
		integer(ilp), intent(in)	ldab,
		real(sp), intent(in)	anorm,
		real(sp), intent(out)	rcond,
		real(sp), dimension(*), intent(out)	work,
		integer(ilp), dimension(*), intent(out)	iwork,
		integer(ilp), intent(out)	info )

zpbcon()

pure subroutine la_lapack::pbcon::zpbcon	(	character, intent(in)	uplo,
		integer(ilp), intent(in)	n,
		integer(ilp), intent(in)	kd,
		complex(dp), dimension(ldab,*), intent(in)	ab,
		integer(ilp), intent(in)	ldab,
		real(dp), intent(in)	anorm,
		real(dp), intent(out)	rcond,
		complex(dp), dimension(*), intent(out)	work,
		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