{he,sy}trd: reduction to tridiagonal

Functions
subroutine	chetrd (uplo, n, a, lda, d, e, tau, work, lwork, info)
	CHETRD
subroutine	dsytrd (uplo, n, a, lda, d, e, tau, work, lwork, info)
	DSYTRD
subroutine	ssytrd (uplo, n, a, lda, d, e, tau, work, lwork, info)
	SSYTRD
subroutine	zhetrd (uplo, n, a, lda, d, e, tau, work, lwork, info)
	ZHETRD

Detailed Description