dlargv (l)  Linux Man Pages
dlargv: generates a vector of real plane rotations, determined by elements of the real vectors x and y
Command to display dlargv
manual in Linux: $ man l dlargv
NAME
DLARGV  generates a vector of real plane rotations, determined by elements of the real vectors x and y
SYNOPSIS
 SUBROUTINE DLARGV(

N, X, INCX, Y, INCY, C, INCC )

INTEGER
INCC, INCX, INCY, N

DOUBLE
PRECISION C( * ), X( * ), Y( * )
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) )
( s(i) c(i) ) ( y(i) ) = ( 0 )
ARGUMENTS
 N (input) INTEGER

The number of plane rotations to be generated.
 X (input/output) DOUBLE PRECISION array,

dimension (1+(N1)*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) DOUBLE PRECISION array,

dimension (1+(N1)*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) DOUBLE PRECISION array, dimension (1+(N1)*INCC)

The cosines of the plane rotations.
 INCC (input) INTEGER

The increment between elements of C. INCC > 0.
Pages related to dlargv
 dlargv (3)
 dlar1v (l)  computes the (scaled) rth column of the inverse of the sumbmatrix in rows B1 through BN of the tridiagonal matrix L D L^T  sigma I
 dlar2v (l)  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
 dlarf (l)  applies a real elementary reflector H to a real m by n matrix C, from either the left or the right
 dlarfb (l)  applies a real block reflector H or its transpose Haq to a real m by n matrix C, from either the left or the right
 dlarfg (l)  generates a real elementary reflector H of order n, such that H * ( alpha ) = ( beta ), Haq * H = I
 dlarfp (l)  generates a real elementary reflector H of order n, such that H * ( alpha ) = ( beta ), Haq * H = I
 dlarft (l)  forms the triangular factor T of a real block reflector H of order n, which is defined as a product of k elementary reflectors
 dlarfx (l)  applies a real elementary reflector H to a real m by n matrix C, from either the left or the right
 dlarnv (l)  returns a vector of n random real numbers from a uniform or normal distribution