# dlargv.f man page

dlargv.f —

## Synopsis

### Functions/Subroutines

subroutinedlargv(N, X, INCX, Y, INCY, C, INCC)DLARGVgenerates a vector of plane rotations with real cosines and real sines.

## Function/Subroutine Documentation

### subroutine dlargv (integerN, double precision, dimension( * )X, integerINCX, double precision, dimension( * )Y, integerINCY, double precision, dimension( * )C, integerINCC)

**DLARGV** generates a vector of plane rotations with real cosines and real sines.

**Purpose:**

```
DLARGV generates a vector of real plane rotations, determined by
elements of the real vectors x and y. For i = 1,2,...,n
( c(i) s(i) ) ( x(i) ) = ( a(i) )
( -s(i) c(i) ) ( y(i) ) = ( 0 )
```

**Parameters:**

*N*

```
N is INTEGER
The number of plane rotations to be generated.
```

*X*

```
X is DOUBLE PRECISION array,
dimension (1+(N-1)*INCX)
On entry, the vector x.
On exit, x(i) is overwritten by a(i), for i = 1,...,n.
```

*INCX*

```
INCX is INTEGER
The increment between elements of X. INCX > 0.
```

*Y*

```
Y is DOUBLE PRECISION array,
dimension (1+(N-1)*INCY)
On entry, the vector y.
On exit, the sines of the plane rotations.
```

*INCY*

```
INCY is INTEGER
The increment between elements of Y. INCY > 0.
```

*C*

```
C is DOUBLE PRECISION array, dimension (1+(N-1)*INCC)
The cosines of the plane rotations.
```

*INCC*

```
INCC is INTEGER
The increment between elements of C. INCC > 0.
```

**Author:**

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

**Date:**

September 2012

Definition at line 105 of file dlargv.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

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

Sat Nov 16 2013 Version 3.4.2 LAPACK