lacrt: apply plane rotation (unused?)

Functions
subroutine	clacrt (n, cx, incx, cy, incy, c, s)
	CLACRT performs a linear transformation of a pair of complex vectors.
subroutine	zlacrt (n, cx, incx, cy, incy, c, s)
	ZLACRT performs a linear transformation of a pair of complex vectors.

Detailed Description