HPEVD: computes all the eigenvalues and, optionally, eigenvectors of a complex Hermitian matrix A in packed storage. If eigenvectors are desired, it uses a divide and conquer algorithm. The divide and conquer algorithm makes very mild assumptions about floating point arithmetic. It will work on machines with a guard digit in add/subtract, or on those binary machines without guard digits which subtract like the Cray X-MP, Cray Y-MP, Cray C-90, or Cray-2. It could conceivably fail on hexadecimal or decimal machines without guard digits, but we know of none. More...

Public Member Functions
subroutine	chpevd (jobz, uplo, n, ap, w, z, ldz, work, lwork, rwork, lrwork, iwork, liwork, info)

	la_chpevd

	la_whpevd

subroutine	zhpevd (jobz, uplo, n, ap, w, z, ldz, work, lwork, rwork, lrwork, iwork, liwork, info)

	la_zhpevd

Detailed Description

HPEVD: computes all the eigenvalues and, optionally, eigenvectors of a complex Hermitian matrix A in packed storage. If eigenvectors are desired, it uses a divide and conquer algorithm. The divide and conquer algorithm makes very mild assumptions about floating point arithmetic. It will work on machines with a guard digit in add/subtract, or on those binary machines without guard digits which subtract like the Cray X-MP, Cray Y-MP, Cray C-90, or Cray-2. It could conceivably fail on hexadecimal or decimal machines without guard digits, but we know of none.

Member Function/Subroutine Documentation

◆ chpevd()

subroutine la_lapack::hpevd::chpevd	(	character, intent(in)	jobz,
		character, intent(in)	uplo,
		integer(ilp), intent(in)	n,
		complex(sp), dimension(*), intent(inout)	ap,
		real(sp), dimension(*), intent(out)	w,
		complex(sp), dimension(ldz,*), intent(out)	z,
		integer(ilp), intent(in)	ldz,
		complex(sp), dimension(*), intent(out)	work,
		integer(ilp), intent(in)	lwork,
		real(sp), dimension(*), intent(out)	rwork,
		integer(ilp), intent(in)	lrwork,
		integer(ilp), dimension(*), intent(out)	iwork,
		integer(ilp), intent(in)	liwork,
		integer(ilp), intent(out)	info
	)

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◆ la_chpevd()

la_lapack::hpevd::la_chpevd

◆ la_whpevd()

la_lapack::hpevd::la_whpevd

◆ la_zhpevd()

la_lapack::hpevd::la_zhpevd

◆ zhpevd()

subroutine la_lapack::hpevd::zhpevd	(	character, intent(in)	jobz,
		character, intent(in)	uplo,
		integer(ilp), intent(in)	n,
		complex(dp), dimension(*), intent(inout)	ap,
		real(dp), dimension(*), intent(out)	w,
		complex(dp), dimension(ldz,*), intent(out)	z,
		integer(ilp), intent(in)	ldz,
		complex(dp), dimension(*), intent(out)	work,
		integer(ilp), intent(in)	lwork,
		real(dp), dimension(*), intent(out)	rwork,
		integer(ilp), intent(in)	lrwork,
		integer(ilp), dimension(*), intent(out)	iwork,
		integer(ilp), intent(in)	liwork,
		integer(ilp), intent(out)	info
	)