la_lapack::tbcon Interface Reference

TBCON: estimates the reciprocal of the condition number of a triangular band matrix A, in either the 1-norm or the infinity-norm. The norm of A is computed and an estimate is obtained for norm(inv(A)), then the reciprocal of the condition number is computed as RCOND = 1 / ( norm(A) * norm(inv(A)) ). More...

Public Member Functions
subroutine	ctbcon (norm, uplo, diag, n, kd, ab, ldab, rcond, work, rwork, info)
	la_ctbcon
subroutine	dtbcon (norm, uplo, diag, n, kd, ab, ldab, rcond, work, iwork, info)
	la_dtbcon
	la_qtbcon
subroutine	stbcon (norm, uplo, diag, n, kd, ab, ldab, rcond, work, iwork, info)
	la_stbcon
	la_wtbcon
subroutine	ztbcon (norm, uplo, diag, n, kd, ab, ldab, rcond, work, rwork, info)
	la_ztbcon

Detailed Description

TBCON: estimates the reciprocal of the condition number of a triangular band matrix A, in either the 1-norm or the infinity-norm. The norm of A is computed and an estimate is obtained for norm(inv(A)), then the reciprocal of the condition number is computed as RCOND = 1 / ( norm(A) * norm(inv(A)) ).

Member Function/Subroutine Documentation

ctbcon()

subroutine la_lapack::tbcon::ctbcon	(	character, intent(in)	norm,
		character, intent(in)	uplo,
		character, intent(in)	diag,
		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(out)	rcond,
		complex(sp), dimension(*), intent(out)	work,
		real(sp), dimension(*), intent(out)	rwork,
		integer(ilp), intent(out)	info )

dtbcon()

subroutine la_lapack::tbcon::dtbcon	(	character, intent(in)	norm,
		character, intent(in)	uplo,
		character, intent(in)	diag,
		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(out)	rcond,
		real(dp), dimension(*), intent(out)	work,
		integer(ilp), dimension(*), intent(out)	iwork,
		integer(ilp), intent(out)	info )

la_ctbcon()

la_lapack::tbcon::la_ctbcon

la_dtbcon()

la_lapack::tbcon::la_dtbcon

la_qtbcon()

la_lapack::tbcon::la_qtbcon

la_stbcon()

la_lapack::tbcon::la_stbcon

la_wtbcon()

la_lapack::tbcon::la_wtbcon

la_ztbcon()

la_lapack::tbcon::la_ztbcon

stbcon()

subroutine la_lapack::tbcon::stbcon	(	character, intent(in)	norm,
		character, intent(in)	uplo,
		character, intent(in)	diag,
		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(out)	rcond,
		real(sp), dimension(*), intent(out)	work,
		integer(ilp), dimension(*), intent(out)	iwork,
		integer(ilp), intent(out)	info )

ztbcon()

subroutine la_lapack::tbcon::ztbcon	(	character, intent(in)	norm,
		character, intent(in)	uplo,
		character, intent(in)	diag,
		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(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