la_wwaddw: add to double-double or single-single vector

Functions
subroutine	cla_wwaddw (n, x, y, w)
	CLA_WWADDW adds a vector into a doubled-single vector.
subroutine	dla_wwaddw (n, x, y, w)
	DLA_WWADDW adds a vector into a doubled-single vector.
subroutine	sla_wwaddw (n, x, y, w)
	SLA_WWADDW adds a vector into a doubled-single vector.
subroutine	zla_wwaddw (n, x, y, w)
	ZLA_WWADDW adds a vector into a doubled-single vector.

Detailed Description