NAME

caxpy - Compute y := alpha ∗ x + y

SYNOPSIS

SUBROUTINE CAXPY (N, ALPHA, X, INCY, Y, INCY )

void caxpy(long int n, complex ∗za, complex ∗zx,
long int incx, complex ∗zy, long int incy)

COMPLEX ALPHA

INTEGER INCX, INCY, N

COMPLEX X( ∗ ), Y( ∗ )

PURPOSE

CAXPY - Compute y := alpha ∗ x + y where alpha is a scalar and x and y are n-vectors. 
 

PARAMETERS

N      - INTEGER. 
On entry, N specifies the number of elements in the vector.  N must be at least one for the subroutine to have any visible effect.  Unchanged on exit.

ALPHA  - COMPLEX. 
On entry, ALPHA specifies the scalar alpha. Unchanged on exit.

X      - COMPLEX          array of DIMENSION at least
( 1 + ( n - 1 )∗abs( INCX ) ). Before entry, the incremented array X must contain the vector x. Unchanged on exit.

INCX   - INTEGER. 
On entry, INCX specifies the increment for the elements of X. INCX must not be zero. Unchanged on exit.

Y      - COMPLEX          array of DIMENSION at least
( 1 + ( m - 1 )∗abs( INCY ) ). On entry, the incremented array Y must contain the vector y. On exit, Y is overwritten by the updated vector y.

INCY   - INTEGER. 
On entry, INCY specifies the increment for the elements of Y. INCY must not be zero. Unchanged on exit.

Sun, Inc.  —  Last change: 20 Sep 1996