la_lapack::sycon Interface Reference

SYCON: estimates the reciprocal of the condition number (in the 1-norm) of a complex symmetric matrix A using the factorization A = U*D*U**T or A = L*D*L**T computed by CSYTRF. 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	csycon (uplo, n, a, lda, ipiv, anorm, rcond, work, info)
	la_csycon
pure subroutine	dsycon (uplo, n, a, lda, ipiv, anorm, rcond, work, iwork, info)
	la_dsycon
	la_qsycon
pure subroutine	ssycon (uplo, n, a, lda, ipiv, anorm, rcond, work, iwork, info)
	la_ssycon
	la_wsycon
pure subroutine	zsycon (uplo, n, a, lda, ipiv, anorm, rcond, work, info)
	la_zsycon

Detailed Description

SYCON: estimates the reciprocal of the condition number (in the 1-norm) of a complex symmetric matrix A using the factorization A = U*D*U**T or A = L*D*L**T computed by CSYTRF. 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

csycon()

pure subroutine la_lapack::sycon::csycon	(	character, intent(in)	uplo,
		integer(ilp), intent(in)	n,
		complex(sp), dimension(lda,*), intent(in)	a,
		integer(ilp), intent(in)	lda,
		integer(ilp), dimension(*), intent(in)	ipiv,
		real(sp), intent(in)	anorm,
		real(sp), intent(out)	rcond,
		complex(sp), dimension(*), intent(out)	work,
		integer(ilp), intent(out)	info
	)

dsycon()

pure subroutine la_lapack::sycon::dsycon	(	character, intent(in)	uplo,
		integer(ilp), intent(in)	n,
		real(dp), dimension(lda,*), intent(in)	a,
		integer(ilp), intent(in)	lda,
		integer(ilp), dimension(*), intent(in)	ipiv,
		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_csycon()

la_lapack::sycon::la_csycon

la_dsycon()

la_lapack::sycon::la_dsycon

la_qsycon()

la_lapack::sycon::la_qsycon

la_ssycon()

la_lapack::sycon::la_ssycon

la_wsycon()

la_lapack::sycon::la_wsycon

la_zsycon()

la_lapack::sycon::la_zsycon

ssycon()

pure subroutine la_lapack::sycon::ssycon	(	character, intent(in)	uplo,
		integer(ilp), intent(in)	n,
		real(sp), dimension(lda,*), intent(in)	a,
		integer(ilp), intent(in)	lda,
		integer(ilp), dimension(*), intent(in)	ipiv,
		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
	)

zsycon()

pure subroutine la_lapack::sycon::zsycon	(	character, intent(in)	uplo,
		integer(ilp), intent(in)	n,
		complex(dp), dimension(lda,*), intent(in)	a,
		integer(ilp), intent(in)	lda,
		integer(ilp), dimension(*), intent(in)	ipiv,
		real(dp), intent(in)	anorm,
		real(dp), intent(out)	rcond,
		complex(dp), dimension(*), intent(out)	work,
		integer(ilp), intent(out)	info
	)

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

• la_lapack.f90