# zdrot.f man page

zdrot.f

## Synopsis

### Functions/Subroutines

subroutine zdrot (N, CX, INCX, CY, INCY, C, S)
ZDROT

## Function/Subroutine Documentation

### subroutine zdrot (integer N, complex*16, dimension( * ) CX, integer INCX, complex*16, dimension( * ) CY, integer INCY, double precision C, double precision S)

ZDROT

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.```
Parameters:

N

```          N is INTEGER
On entry, N specifies the order of the vectors cx and cy.
N must be at least zero.```

CX

```          CX is 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

```          INCX is INTEGER
On entry, INCX specifies the increment for the elements of
CX. INCX must not be zero.```

CY

```          CY is 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

```          INCY is INTEGER
On entry, INCY specifies the increment for the elements of
CY. INCY must not be zero.```

C

```          C is DOUBLE PRECISION
On entry, C specifies the cosine, cos.```

S

```          S is DOUBLE PRECISION
On entry, S specifies the sine, sin.```
Author:

Univ. of Tennessee

Univ. of California Berkeley

NAG Ltd.

Date:

December 2016

Definition at line 100 of file zdrot.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

The man page zdrot(3) is an alias of zdrot.f(3).

Tue Nov 14 2017 Version 3.8.0 LAPACK