la_lapack::sytrd Interface Reference

SYTRD: reduces a real symmetric matrix A to real symmetric tridiagonal form T by an orthogonal similarity transformation: Q**T * A * Q = T. More...

Public Member Functions
pure subroutine	dsytrd (uplo, n, a, lda, d, e, tau, work, lwork, info)
	la_dsytrd
	la_qsytrd
pure subroutine	ssytrd (uplo, n, a, lda, d, e, tau, work, lwork, info)
	la_ssytrd

Detailed Description

SYTRD: reduces a real symmetric matrix A to real symmetric tridiagonal form T by an orthogonal similarity transformation: Q**T * A * Q = T.

Member Function/Subroutine Documentation

dsytrd()

pure subroutine la_lapack::sytrd::dsytrd	(	character, intent(in)	uplo,
		integer(ilp), intent(in)	n,
		real(dp), dimension(lda,*), intent(inout)	a,
		integer(ilp), intent(in)	lda,
		real(dp), dimension(*), intent(out)	d,
		real(dp), dimension(*), intent(out)	e,
		real(dp), dimension(*), intent(out)	tau,
		real(dp), dimension(*), intent(out)	work,
		integer(ilp), intent(in)	lwork,
		integer(ilp), intent(out)	info )

la_dsytrd()

la_lapack::sytrd::la_dsytrd

la_qsytrd()

la_lapack::sytrd::la_qsytrd

la_ssytrd()

la_lapack::sytrd::la_ssytrd

ssytrd()

pure subroutine la_lapack::sytrd::ssytrd	(	character, intent(in)	uplo,
		integer(ilp), intent(in)	n,
		real(sp), dimension(lda,*), intent(inout)	a,
		integer(ilp), intent(in)	lda,
		real(sp), dimension(*), intent(out)	d,
		real(sp), dimension(*), intent(out)	e,
		real(sp), dimension(*), intent(out)	tau,
		real(sp), dimension(*), intent(out)	work,
		integer(ilp), intent(in)	lwork,
		integer(ilp), intent(out)	info )

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

• la_lapack.f90