DLAR2V(l) ) DLAR2V(l)
NAME
DLAR2V - applie 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 version 3.0 15 June 2000 DLAR2V(l)
Check Out this Related Man Page
dlar2v.f(3) LAPACK dlar2v.f(3)NAME
dlar2v.f -
SYNOPSIS
Functions/Subroutines
subroutine dlar2v (N, X, Y, Z, INCX, C, S, INCC)
DLAR2V
Function/Subroutine Documentation
subroutine dlar2v (integerN, double precision, dimension( * )X, double precision, dimension( * )Y, double precision, dimension( * )Z,
integerINCX, double precision, dimension( * )C, double precision, dimension( * )S, integerINCC)
DLAR2V
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) )
Parameters:
N
N is INTEGER
The number of plane rotations to be applied.
X
X is DOUBLE PRECISION array,
dimension (1+(N-1)*INCX)
The vector x.
Y
Y is DOUBLE PRECISION array,
dimension (1+(N-1)*INCX)
The vector y.
Z
Z is DOUBLE PRECISION array,
dimension (1+(N-1)*INCX)
The vector z.
INCX
INCX is INTEGER
The increment between elements of X, Y and Z. INCX > 0.
C
C is DOUBLE PRECISION array, dimension (1+(N-1)*INCC)
The cosines of the plane rotations.
S
S is DOUBLE PRECISION array, dimension (1+(N-1)*INCC)
The sines of the plane rotations.
INCC
INCC is INTEGER
The increment between elements of C and S. INCC > 0.
Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
November 2011
Definition at line 111 of file dlar2v.f.
Author
Generated automatically by Doxygen for LAPACK from the source code.
Version 3.4.1 Sun May 26 2013 dlar2v.f(3)
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