.TH DLARGV 1 "November 2006" " LAPACK auxiliary routine (version 3.1) " " LAPACK auxiliary routine (version 3.1) "
.SH NAME
DLARGV - a vector of real plane rotations, determined by elements of the real vectors x and y
.SH SYNOPSIS
.TP 19
SUBROUTINE DLARGV(
N, X, INCX, Y, INCY, C, INCC )
.TP 19
.ti +4
INTEGER
INCC, INCX, INCY, N
.TP 19
.ti +4
DOUBLE
PRECISION C( * ), X( * ), Y( * )
.SH 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) )
.br
( -s(i) c(i) ) ( y(i) ) = ( 0 )
.br
.SH ARGUMENTS
.TP 8
N (input) INTEGER
The number of plane rotations to be generated.
.TP 8
X (input/output) 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.
.TP 8
INCX (input) INTEGER
The increment between elements of X. INCX > 0.
.TP 8
Y (input/output) DOUBLE PRECISION array,
dimension (1+(N-1)*INCY)
On entry, the vector y.
On exit, the sines of the plane rotations.
.TP 8
INCY (input) INTEGER
The increment between elements of Y. INCY > 0.
.TP 8
C (output) DOUBLE PRECISION array, dimension (1+(N-1)*INCC)
The cosines of the plane rotations.
.TP 8
INCC (input) INTEGER
The increment between elements of C. INCC > 0.