LAPACK  3.4.2
LAPACK: Linear Algebra PACKage
 All Files Functions Groups
Functions/Subroutines
dlargv.f File Reference

Go to the source code of this file.

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.

Download DLARGV + dependencies [TGZ] [ZIP] [TXT]
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:
[in]N
          N is INTEGER
          The number of plane rotations to be generated.
[in,out]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.
[in]INCX
          INCX is INTEGER
          The increment between elements of X. INCX > 0.
[in,out]Y
          Y is DOUBLE PRECISION array,
                         dimension (1+(N-1)*INCY)
          On entry, the vector y.
          On exit, the sines of the plane rotations.
[in]INCY
          INCY is INTEGER
          The increment between elements of Y. INCY > 0.
[out]C
          C is DOUBLE PRECISION array, dimension (1+(N-1)*INCC)
          The cosines of the plane rotations.
[in]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.
Date:
September 2012

Definition at line 105 of file dlargv.f.

Here is the caller graph for this function: