dlar2v (3)  Linux Man Pages
NAME
dlar2v.f 
SYNOPSIS
Functions/Subroutines
subroutine dlar2v (N, X, Y, Z, INCX, C, S, INCC)
DLAR2V applies a vector of plane rotations with real cosines and real sines from both sides to a sequence of 2by2 symmetric/Hermitian matrices.
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 applies a vector of plane rotations with real cosines and real sines from both sides to a sequence of 2by2 symmetric/Hermitian matrices.
Purpose:

DLAR2V applies a vector of real plane rotations from both sides to a sequence of 2by2 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.
XX is DOUBLE PRECISION array, dimension (1+(N1)*INCX) The vector x.
YY is DOUBLE PRECISION array, dimension (1+(N1)*INCX) The vector y.
ZZ is DOUBLE PRECISION array, dimension (1+(N1)*INCX) The vector z.
INCXINCX is INTEGER The increment between elements of X, Y and Z. INCX > 0.
CC is DOUBLE PRECISION array, dimension (1+(N1)*INCC) The cosines of the plane rotations.
SS is DOUBLE PRECISION array, dimension (1+(N1)*INCC) The sines of the plane rotations.
INCCINCC 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:
 September 2012
Definition at line 111 of file dlar2v.f.
Author
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