Provided by: liblapack-doc_3.3.1-1_all

**NAME**

LAPACK-3 - applies a plane rotation, where the cos (C) is real and the sin (S) is complex, and the vectors CX and CY are complex

**SYNOPSIS**

SUBROUTINE CROT( N, CX, INCX, CY, INCY, C, S ) INTEGER INCX, INCY, N REAL C COMPLEX S COMPLEX CX( * ), CY( * )

**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.

**ARGUMENTS**

N (input) INTEGER The number of elements in the vectors CX and CY. CX (input/output) COMPLEX 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 array, dimension (N) On input, the vector Y. On output, CY is overwritten with -CONJG(S)*X + C*Y. INCY (input) INTEGER The increment between successive values of CY. INCX <> 0. C (input) REAL S (input) COMPLEX C and S define a rotation [ C S ] [ -conjg(S) C ] where C*C + S*CONJG(S) = 1.0. LAPACK auxiliary routine (version 3.2) April 2011 CROT(3lapack)