la_lapack::trcon Interface Reference

TRCON: estimates the reciprocal of the condition number of a triangular 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	ctrcon (norm, uplo, diag, n, a, lda, rcond, work, rwork, info)
	la_ctrcon
subroutine	dtrcon (norm, uplo, diag, n, a, lda, rcond, work, iwork, info)
	la_dtrcon
	la_qtrcon
subroutine	strcon (norm, uplo, diag, n, a, lda, rcond, work, iwork, info)
	la_strcon
	la_wtrcon
subroutine	ztrcon (norm, uplo, diag, n, a, lda, rcond, work, rwork, info)
	la_ztrcon

Detailed Description

TRCON: estimates the reciprocal of the condition number of a triangular 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

ctrcon()

subroutine la_lapack::trcon::ctrcon	(	character, intent(in)	norm,
		character, intent(in)	uplo,
		character, intent(in)	diag,
		integer(ilp), intent(in)	n,
		complex(sp), dimension(lda,*), intent(in)	a,
		integer(ilp), intent(in)	lda,
		real(sp), intent(out)	rcond,
		complex(sp), dimension(*), intent(out)	work,
		real(sp), dimension(*), intent(out)	rwork,
		integer(ilp), intent(out)	info
	)

dtrcon()

subroutine la_lapack::trcon::dtrcon	(	character, intent(in)	norm,
		character, intent(in)	uplo,
		character, intent(in)	diag,
		integer(ilp), intent(in)	n,
		real(dp), dimension(lda,*), intent(in)	a,
		integer(ilp), intent(in)	lda,
		real(dp), intent(out)	rcond,
		real(dp), dimension(*), intent(out)	work,
		integer(ilp), dimension(*), intent(out)	iwork,
		integer(ilp), intent(out)	info
	)

la_ctrcon()

la_lapack::trcon::la_ctrcon

la_dtrcon()

la_lapack::trcon::la_dtrcon

la_qtrcon()

la_lapack::trcon::la_qtrcon

la_strcon()

la_lapack::trcon::la_strcon

la_wtrcon()

la_lapack::trcon::la_wtrcon

la_ztrcon()

la_lapack::trcon::la_ztrcon

strcon()

subroutine la_lapack::trcon::strcon	(	character, intent(in)	norm,
		character, intent(in)	uplo,
		character, intent(in)	diag,
		integer(ilp), intent(in)	n,
		real(sp), dimension(lda,*), intent(in)	a,
		integer(ilp), intent(in)	lda,
		real(sp), intent(out)	rcond,
		real(sp), dimension(*), intent(out)	work,
		integer(ilp), dimension(*), intent(out)	iwork,
		integer(ilp), intent(out)	info
	)

ztrcon()

subroutine la_lapack::trcon::ztrcon	(	character, intent(in)	norm,
		character, intent(in)	uplo,
		character, intent(in)	diag,
		integer(ilp), intent(in)	n,
		complex(dp), dimension(lda,*), intent(in)	a,
		integer(ilp), intent(in)	lda,
		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