slargv (l) - Linux Manuals

slargv: generates a vector of real plane rotations, determined by elements of the real vectors x and y

NAME

SLARGV - generates a vector of real plane rotations, determined by elements of the real vectors x and y

SYNOPSIS

SUBROUTINE SLARGV(
N, X, INCX, Y, INCY, C, INCC )

    
INTEGER INCC, INCX, INCY, N

    
REAL C( * ), X( * ), Y( * )

PURPOSE

SLARGV 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) REAL array,
dimension (1+(N-1)*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) REAL array,
dimension (1+(N-1)*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) REAL array, dimension (1+(N-1)*INCC)
The cosines of the plane rotations.
INCC (input) INTEGER
The increment between elements of C. INCC > 0.

Pages related to slargv

  • slargv (3)
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  • slarft (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
  • slarfx (l) - applies a real elementary reflector H to a real m by n matrix C, from either the left or the right
  • slarnv (l) - returns a vector of n random real numbers from a uniform or normal distribution