ZDROT(1)

NAME
LAPACK-3 - a plane rotation, where the cos and sin (c and s) are real and the vectors cx and cy are complex

SYNOPSIS

SUBROUTINE ZDROT(
    N, CX, INCX, CY, INCY, C, S )

INTEGER
    INCX, INCY, N

DOUBLE
    PRECISION C, S

COMPLEX*16
    CX( * ), CY( * )

PURPOSE
Applies a plane rotation, where the cos and sin (c and s) are real and the vectors cx and cy are complex.
 jack dongarra, linpack, 3/11/78.

ARGUMENTS

N        (input) INTEGER
     On entry, N specifies the order of the vectors cx and cy.
     N must be at least zero.
     Unchanged on exit.

CX       (input) COMPLEX*16 array, dimension at least
     ( 1 + ( N - 1 )*abs( INCX ) ).
     Before entry, the incremented array CX must contain the n
     element vector cx. On exit, CX is overwritten by the updated
     vector cx.

INCX     (input) INTEGER
     On entry, INCX specifies the increment for the elements of
     CX. INCX must not be zero.
     Unchanged on exit.

CY       (input) COMPLEX*16 array, dimension at least
     ( 1 + ( N - 1 )*abs( INCY ) ).
     Before entry, the incremented array CY must contain the n
     element vector cy. On exit, CY is overwritten by the updated
     vector cy.

INCY     (input) INTEGER
     On entry, INCY specifies the increment for the elements of
     CY. INCY must not be zero.
     Unchanged on exit.

C        (input) DOUBLE PRECISION
     On entry, C specifies the cosine, cos.
     Unchanged on exit.

S        (input) DOUBLE PRECISION
     On entry, S specifies the sine, sin.
     Unchanged on exit.