NAME

dcopy - Copy x to y

SYNOPSIS

SUBROUTINE DCOPY (N, X, INCY, Y, INCY )

void dcopy(long int n, double ∗dx, long int incx,
double ∗dy, long int incy)

INTEGER INCX, INCY, N

REAL    X( ∗ ), Y( ∗ )

PURPOSE

DCOPY - Copy x to y where 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.

X      - DOUBLE PRECISION 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      - DOUBLE PRECISION 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 vector x.

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