# zdrot.f - Man Page

BLAS/SRC/zdrot.f

## Synopsis

### Functions/Subroutines

subroutine zdrot (n, zx, incx, zy, incy, c, s)
ZDROT

## Function/Subroutine Documentation

### subroutine zdrot (integer n, complex*16, dimension( * ) zx, integer incx, complex*16, dimension( * ) zy, 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.```

ZX

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

INCX

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

ZY

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

INCY

```          INCY is INTEGER
On entry, INCY specifies the increment for the elements of
ZY. 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.

Definition at line 97 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 28 2023 12:08:41 Version 3.12.0 LAPACK