NAME

SRC/dlartv.f

SYNOPSIS

Functions/Subroutines

subroutine dlartv (n, x, incx, y, incy, c, s, incc)
DLARTV applies a vector of plane rotations with real cosines and real sines to the elements of a pair of vectors.

Function/Subroutine Documentation

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

DLARTV applies a vector of plane rotations with real cosines and real sines to the elements of a pair of vectors.

Purpose:



 DLARTV applies a vector of real plane rotations to elements of the


 real vectors x and y. For i = 1,2,...,n


    ( x(i) ) := (  c(i)  s(i) ) ( x(i) )


    ( y(i) )    ( -s(i)  c(i) ) ( y(i) )

Parameters



          N is INTEGER


          The number of plane rotations to be applied.



          X is DOUBLE PRECISION array,


                         dimension (1+(N-1)*INCX)


          The vector x.

INCX



          INCX is INTEGER


          The increment between elements of X. INCX > 0.



          Y is DOUBLE PRECISION array,


                         dimension (1+(N-1)*INCY)


          The vector y.

INCY



          INCY is INTEGER


          The increment between elements of Y. INCY > 0.



          C is DOUBLE PRECISION array, dimension (1+(N-1)*INCC)


          The cosines of the plane rotations.



          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.

Definition at line 107 of file dlartv.f.

Author

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