/* dcopy.f -- translated by f2c (version 19961017).
   You must link the resulting object file with the libraries:
	-lf2c -lm   (in that order)
*/

#include "f2c.h"

/* Subroutine */ int dcopy_(n, sx, incx, sy, incy)
integer *n;
doublereal *sx;
integer *incx;
doublereal *sy;
integer *incy;
{
    /* System generated locals */
    integer i__1;

    /* Local variables */
    static integer i__, m, ix, iy, mp1;


/*     COPIES A VECTOR, X, TO A VECTOR, Y. */
/*     USES UNROLLED LOOPS FOR INCREMENTS EQUAL TO 1. */
/*     JACK DONGARRA, LINPACK, 3/11/78. */


    /* Parameter adjustments */
    --sy;
    --sx;

    /* Function Body */
    if (*n <= 0) {
	return 0;
    }
    if (*incx == 1 && *incy == 1) {
	goto L20;
    }

/*        CODE FOR UNEQUAL INCREMENTS OR EQUAL INCREMENTS */
/*          NOT EQUAL TO 1 */

    ix = 1;
    iy = 1;
    if (*incx < 0) {
	ix = (-(*n) + 1) * *incx + 1;
    }
    if (*incy < 0) {
	iy = (-(*n) + 1) * *incy + 1;
    }
    i__1 = *n;
    for (i__ = 1; i__ <= i__1; ++i__) {
	sy[iy] = sx[ix];
	ix += *incx;
	iy += *incy;
/* L10: */
    }
    return 0;

/*        CODE FOR BOTH INCREMENTS EQUAL TO 1 */


/*        CLEAN-UP LOOP */

L20:
    m = *n % 7;
    if (m == 0) {
	goto L40;
    }
    i__1 = m;
    for (i__ = 1; i__ <= i__1; ++i__) {
	sy[i__] = sx[i__];
/* L30: */
    }
    if (*n < 7) {
	return 0;
    }
L40:
    mp1 = m + 1;
    i__1 = *n;
    for (i__ = mp1; i__ <= i__1; i__ += 7) {
	sy[i__] = sx[i__];
	sy[i__ + 1] = sx[i__ + 1];
	sy[i__ + 2] = sx[i__ + 2];
	sy[i__ + 3] = sx[i__ + 3];
	sy[i__ + 4] = sx[i__ + 4];
	sy[i__ + 5] = sx[i__ + 5];
	sy[i__ + 6] = sx[i__ + 6];
/* L50: */
    }
    return 0;
} /* dcopy_ */

