crot()

subroutine crot	(	integer	n,
		complex, dimension( * )	cx,
		integer	incx,
		complex, dimension( * )	cy,
		integer	incy,
		real	c,
		complex	s )

CROT applies a plane rotation with real cosine and complex sine to a pair of complex vectors.

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Purpose:

!>
!> CROT applies a plane rotation, where the cos (C) is real and the
!> sin (S) is complex, and the vectors CX and CY are complex.
!> 

Parameters

[in]	N	!> N is INTEGER !> The number of elements in the vectors CX and CY. !>
[in,out]	CX	!> CX is COMPLEX array, dimension (N) !> On input, the vector X. !> On output, CX is overwritten with C*X + S*Y. !>
[in]	INCX	!> INCX is INTEGER !> The increment between successive values of CX. INCX <> 0. !>
[in,out]	CY	!> CY is COMPLEX array, dimension (N) !> On input, the vector Y. !> On output, CY is overwritten with -CONJG(S)*X + C*Y. !>
[in]	INCY	!> INCY is INTEGER !> The increment between successive values of CY. INCX <> 0. !>
[in]	C	!> C is REAL !>
[in]	S	!> S is COMPLEX !> C and S define a rotation !> [ C S ] !> [ -conjg(S) C ] !> where C*C + S*CONJG(S) = 1.0. !>

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.