DLAR2V(1) LAPACK auxiliary routine (version 3.2) DLAR2V(1)NAME
DLAR2V - applies a vector of real plane rotations from both sides to a
sequence of 2-by-2 real symmetric matrices, defined by the elements of
the vectors x, y and z
SYNOPSIS
SUBROUTINE DLAR2V( N, X, Y, Z, INCX, C, S, INCC )
INTEGER INCC, INCX, N
DOUBLE PRECISION C( * ), S( * ), X( * ), Y( * ), Z( * )
PURPOSE
DLAR2V applies a vector of real plane rotations from both sides to a
sequence of 2-by-2 real symmetric matrices, defined by the elements of
the vectors x, y and z. For i = 1,2,...,n
( x(i)z(i) ) := ( c(i)s(i) ) ( x(i)z(i) ) ( c(i) -s(i) )
( z(i)y(i) ) ( -s(i)c(i) ) ( z(i)y(i) ) ( s(i)c(i) )
ARGUMENTS
N (input) INTEGER
The number of plane rotations to be applied.
X (input/output) DOUBLE PRECISION array,
dimension (1+(N-1)*INCX) The vector x.
Y (input/output) DOUBLE PRECISION array,
dimension (1+(N-1)*INCX) The vector y.
Z (input/output) DOUBLE PRECISION array,
dimension (1+(N-1)*INCX) The vector z.
INCX (input) INTEGER
The increment between elements of X, Y and Z. INCX > 0.
C (input) DOUBLE PRECISION array, dimension (1+(N-1)*INCC)
The cosines of the plane rotations.
S (input) DOUBLE PRECISION array, dimension (1+(N-1)*INCC)
The sines of the plane rotations.
INCC (input) INTEGER
The increment between elements of C and S. INCC > 0.
LAPACK auxiliary routine (versioNovember 2008 DLAR2V(1)
