NAME

clartv - apply a vector of complex plane rotations with real cosines to elements of the complex vectors x and y

SYNOPSIS

SUBROUTINE CLARTV( N, X, INCX, Y, INCY, C, S, INCC )

INTEGER INCC, INCX, INCY, N

REAL C( ∗ )

COMPLEX S( ∗ ), X( ∗ ), Y( ∗ )

#include <sunperf.h>

void clartv(int n, complex ∗cx, int incx, complex ∗cy, int incy, float ∗sc, complex ∗s, int incc) ;

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) )
 

ARGUMENTS

N (input) INTEGER
The number of plane rotations to be applied.

X (input/output) COMPLEX array, dimension (1+(N-1)∗INCX)
The vector x.

INCX (input) INTEGER
The increment between elements of X. INCX > 0.

Y (input/output) COMPLEX array, dimension (1+(N-1)∗INCY)
The vector y.

INCY (input) INTEGER
The increment between elements of Y. INCY > 0.

C (input) REAL array, dimension (1+(N-1)∗INCC)
The cosines of the plane rotations.

S (input) COMPLEX array, dimension (1+(N-1)∗INCC)
The sines of the plane rotations.

INCC (input) INTEGER
The increment between elements of C and S. INCC > 0.

SunOS 5.0  —  Last change: 10 Dec 1998