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# clargv

```
NAME
CLARGV - generate a vector of complex plane rotations with
real cosines, determined by elements of the complex vectors
x and y

SYNOPSIS
SUBROUTINE CLARGV( N, X, INCX, Y, INCY, C, INCC )

INTEGER        INCC, INCX, INCY, N

REAL           C( * )

COMPLEX        X( * ), Y( * )

PURPOSE
CLARGV generates a vector of complex plane rotations with
real cosines, determined by elements of the complex vectors
x and y.  For i = 1,2,...,n

(        c(i)   s(i) ) ( x(i) ) = ( a(i) )
( -conjg(s(i))  c(i) ) ( y(i) ) = (   0  )

ARGUMENTS
N       (input) INTEGER
The number of plane rotations to be generated.

X       (input/output) COMPLEX array, dimension (1+(N-
1)*INCX)
On entry, the vector x.  On exit, x(i) is overwrit-
ten by a(i), for i = 1,...,n.

INCX    (input) INTEGER
The increment between elements of X. INCX > 0.

Y       (input/output) COMPLEX array, dimension (1+(N-
1)*INCY)
On entry, the vector y.  On exit, the sines of the
plane rotations.

INCY    (input) INTEGER
The increment between elements of Y. INCY > 0.

C       (output) REAL array, dimension (1+(N-1)*INCC)
The cosines of the plane rotations.

INCC    (input) INTEGER
The increment between elements of C. INCC > 0.
```