NAME

ZLACRT - applie a plane rotation, where the cos and sin (C and S) are complex and the vectors CX and CY are complex

SYNOPSIS

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

INTEGER INCX, INCY, N

COMPLEX∗16 C, S

COMPLEX∗16 CX( ∗ ), CY( ∗ )

PURPOSE

ZLACRT applies a plane rotation, where the cos and sin (C and S) are complex and the vectors CX and CY are complex. 
 

ARGUMENTS

N       (input) INTEGER
The number of elements in the vectors CX and CY.

CX      (input/output) COMPLEX∗16 array, dimension (N)
On input, the vector X. On output, CX is overwritten with C∗X + S∗Y.

INCX    (input) INTEGER
The increment between successive values of CY.  INCX <> 0.

CY      (input/output) COMPLEX∗16 array, dimension (N)
On input, the vector Y. On output, CY is overwritten with -S∗X + C∗Y.

INCY    (input) INTEGER
The increment between successive values of CY.  INCX <> 0.

C       (input) COMPLEX∗16
S       (input) COMPLEX∗16 C and S define a complex rotation [  C   S  ] [ -S   C  ] where C∗C + S∗S = 1.0.

  —  LAPACK version 2.0  —  08 October 1994