{he,sy}td2: reduction to tridiagonal, level 2

Collaboration diagram for {he,sy}td2: reduction to tridiagonal, level 2:

Functions
subroutine	chetd2 (uplo, n, a, lda, d, e, tau, info)
	CHETD2 reduces a Hermitian matrix to real symmetric tridiagonal form by an unitary similarity transformation (unblocked algorithm).
subroutine	dsytd2 (uplo, n, a, lda, d, e, tau, info)
	DSYTD2 reduces a symmetric matrix to real symmetric tridiagonal form by an orthogonal similarity transformation (unblocked algorithm).
subroutine	ssytd2 (uplo, n, a, lda, d, e, tau, info)
	SSYTD2 reduces a symmetric matrix to real symmetric tridiagonal form by an orthogonal similarity transformation (unblocked algorithm).
subroutine	zhetd2 (uplo, n, a, lda, d, e, tau, info)
	ZHETD2 reduces a Hermitian matrix to real symmetric tridiagonal form by an unitary similarity transformation (unblocked algorithm).

Detailed Description