Technical Reference: Base Operating System and Extensions, Volume 2

SCOPY, DCOPY, CCOPY, or ZCOPY Subroutine

Copies vector X to Y.

BLAS Library (libblas.a)

SUBROUTINE SCOPY(N,X,INCX,Y,INCY) INTEGER INCX, INCY, N REAL X(*), Y(*)

SUBROUTINE DCOPY(N,X,INCX,Y,INCY)
INTEGER INCX,INCY,N
DOUBLE PRECISION X(*),Y(*)

SUBROUTINE CCOPY(N,X,INCX,Y,INCY)
INTEGER INCX,INCY,N
COMPLEX X(*),Y(*)

SUBROUTINE ZCOPY(N,X,INCX,Y,INCY)
INTEGER INCX,INCY,N
COMPLEX*16 X(*),Y(*)

The SCOPY, DCOPY, CCOPY, or ZCOPY subroutine copies vector X to vector Y.

N	On entry, N specifies the number of elements in X and Y; unchanged on exit.
X	Vector of dimension at least (1 + (N-1) * abs(INCX) ); unchanged on exit.
INCX	On entry, INCX specifies the increment for the elements of X; unchanged on exit.
Y	Vector of dimension at least (1 + (N-1) * abs(INCY) ) or greater; can contain any values on entry; on exit, contains the same values as X.
INCY	On entry, INCY specifies the increment for the elements of Y; unchanged on exit.

For values of N <= 0, the subroutines return immediately.