{hb,sb}trd: reduction to tridiagonal

Functions
subroutine	chbtrd (vect, uplo, n, kd, ab, ldab, d, e, q, ldq, work, info)
	CHBTRD
subroutine	dsbtrd (vect, uplo, n, kd, ab, ldab, d, e, q, ldq, work, info)
	DSBTRD
subroutine	ssbtrd (vect, uplo, n, kd, ab, ldab, d, e, q, ldq, work, info)
	SSBTRD
subroutine	zhbtrd (vect, uplo, n, kd, ab, ldab, d, e, q, ldq, work, info)
	ZHBTRD

Detailed Description