man clacrt (Fonctions bibliothèques) - 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
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 )
- INTEGER INCX, INCY, N
- COMPLEX C, S
- COMPLEX CX( * ), CY( * )
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 ]