#include "blaswrap.h"
#include "f2c.h"

/* Subroutine */ int zscal_(integer *n, doublecomplex *za, doublecomplex *zx, 
	integer *incx)
{
    /* System generated locals */
    integer i__1, i__2, i__3;
    doublecomplex z__1;
    /* Local variables */
    static integer i__, ix;
/*     scales a vector by a constant.   
       jack dongarra, 3/11/78.   
       modified 3/93 to return if incx .le. 0.   
       modified 12/3/93, array(1) declarations changed to array(*)   
       Parameter adjustments */
    --zx;
    /* Function Body */
    if (*n <= 0 || *incx <= 0) {
	return 0;
    }
    if (*incx == 1) {
	goto L20;
    }
/*        code for increment not equal to 1 */
    ix = 1;
    i__1 = *n;
    for (i__ = 1; i__ <= i__1; ++i__) {
	i__2 = ix;
	i__3 = ix;
	z__1.r = za->r * zx[i__3].r - za->i * zx[i__3].i, z__1.i = za->r * zx[
		i__3].i + za->i * zx[i__3].r;
	zx[i__2].r = z__1.r, zx[i__2].i = z__1.i;
	ix += *incx;
/* L10: */
    }
    return 0;
/*        code for increment equal to 1 */
L20:
    i__1 = *n;
    for (i__ = 1; i__ <= i__1; ++i__) {
	i__2 = i__;
	i__3 = i__;
	z__1.r = za->r * zx[i__3].r - za->i * zx[i__3].i, z__1.i = za->r * zx[
		i__3].i + za->i * zx[i__3].r;
	zx[i__2].r = z__1.r, zx[i__2].i = z__1.i;
/* L30: */
    }
    return 0;
} /* zscal_ */

