NAME
CLACRT - perform the operation ( c s )( x ) ==> ( x ) ( -s c )( y ) ( y ) where c and s are complex and the vectors x and y are complex
SYNOPSIS
SUBROUTINE CLACRT(
N, CX, INCX, CY, INCY, C, S )
PURPOSE
CLACRT performs the operation ( c s )( x ) ==> ( x ) ( -s c )( y ) ( y ) where c and s are complex and the vectors x and y are complex.
ARGUMENTS
N (input) INTEGER
The number of elements in the vectors CX and CY.
CX (input/output) COMPLEX array, dimension (N)
On input, the vector x.
On output, CX is overwritten with c*x + s*y.
INCX (input) INTEGER
The increment between successive values of CX. INCX <> 0.
CY (input/output) COMPLEX array, dimension (N)
On input, the vector y.
On output, CY is overwritten with -s*x + c*y.
INCY (input) INTEGER
The increment between successive values of CY. INCY <> 0.
C (input) COMPLEX
S (input) COMPLEX
C and S define the matrix
[ C S ].
[ -S C ]
ČLÁNKY DO MAILU