SRC/dlargv.f(3)

NAME
SRC/dlargv.f

SYNOPSIS

  Functions/Subroutines
subroutine dlargv (n, x, incx, y, incy, c, incc)
DLARGV generates a vector of plane rotations with real cosines and real sines.

Function/Subroutine Documentation

  subroutine dlargv (integer n, double precision, dimension( * ) x, integer incx, double precision, dimension( * ) y, integer incy, double precision, dimension( * ) c, integer incc)

DLARGV generates a vector of plane rotations with real cosines and real sines.

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  )
    !>

Parameters
    N

    !>          N is INTEGER
    !>          The number of plane rotations to be generated.
    !>

    X

    !>          X is DOUBLE PRECISION 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

    !>          INCX is INTEGER
    !>          The increment between elements of X. INCX > 0.
    !>

    Y

    !>          Y is DOUBLE PRECISION array,
    !>                         dimension (1+(N-1)*INCY)
    !>          On entry, the vector y.
    !>          On exit, the sines of the plane rotations.
    !>

    INCY

    !>          INCY is INTEGER
    !>          The increment between elements of Y. INCY > 0.
    !>

    C

    !>          C is DOUBLE PRECISION array, dimension (1+(N-1)*INCC)
    !>          The cosines of the plane rotations.
    !>

    INCC

    !>          INCC is INTEGER
    !>          The increment between elements of C. INCC > 0.
    !>

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Definition at line 103 of file dlargv.f.

Author

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