LAPACK 3.12.0
LAPACK: Linear Algebra PACKage
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◆ clartv()

subroutine clartv ( integer n,
complex, dimension( * ) x,
integer incx,
complex, dimension( * ) y,
integer incy,
real, dimension( * ) c,
complex, dimension( * ) s,
integer incc )

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

Download CLARTV + dependencies [TGZ] [ZIP] [TXT]

Purpose:
!>
!> CLARTV applies a vector of complex plane rotations with real cosines
!> to elements of the complex vectors x and y. For i = 1,2,...,n
!>
!>    ( x(i) ) := (        c(i)   s(i) ) ( x(i) )
!>    ( y(i) )    ( -conjg(s(i))  c(i) ) ( y(i) )
!> 
Parameters
[in]N
!>          N is INTEGER
!>          The number of plane rotations to be applied.
!> 
[in,out]X
!>          X is COMPLEX array, dimension (1+(N-1)*INCX)
!>          The vector x.
!> 
[in]INCX
!>          INCX is INTEGER
!>          The increment between elements of X. INCX > 0.
!> 
[in,out]Y
!>          Y is COMPLEX array, dimension (1+(N-1)*INCY)
!>          The vector y.
!> 
[in]INCY
!>          INCY is INTEGER
!>          The increment between elements of Y. INCY > 0.
!> 
[in]C
!>          C is REAL array, dimension (1+(N-1)*INCC)
!>          The cosines of the plane rotations.
!> 
[in]S
!>          S is COMPLEX array, dimension (1+(N-1)*INCC)
!>          The sines of the plane rotations.
!> 
[in]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.