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# slargv

```
NAME
SLARGV - generate a vector of real plane rotations, deter-
mined by elements of the real vectors x and y

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

INTEGER        INCC, INCX, INCY, N

REAL           C( * ), X( * ), Y( * )

PURPOSE
SLARGV generates a vector of real plane rotations, deter-
mined 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  )

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

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

Y       (input/output) REAL 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.
```