# csrot.f man page

csrot.f —

## Synopsis

### Functions/Subroutines

subroutinecsrot(N, CX, INCX, CY, INCY, C, S)CSROT

## Function/Subroutine Documentation

### subroutine csrot (integerN, complex, dimension( * )CX, integerINCX, complex, dimension( * )CY, integerINCY, realC, realS)

**CSROT Purpose:**

```
CSROT 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 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 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 REAL
On entry, C specifies the cosine, cos.
```

*S*

```
S is REAL
On entry, S specifies the sine, sin.
```

**Author:**

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

**Date:**

November 2011

Definition at line 99 of file csrot.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

csrot(3) is an alias of csrot.f(3).