/*  -- translated by f2c (version 19940927).

   You must link the resulting object file with the libraries:

	-lf2c -lm   (in that order)

*/

#include "f2c.h"

/* Subroutine */ int dscal_(integer *n, doublereal *da, doublereal *dx, 

	integer *incx)

{

    /* System generated locals */

    integer i__1, i__2;

    /* Local variables */

    static integer i, m, nincx, mp1;

/*     scales a vector by a constant.   

       uses unrolled loops for increment equal to one.   

       jack dongarra, linpack, 3/11/78.   

       modified 3/93 to return if incx .le. 0.   

       modified 12/3/93, array(1) declarations changed to array(*)   

   Parameter adjustments   

       Function Body */

#define DX(I) dx[(I)-1]

    if (*n <= 0 || *incx <= 0) {

	return 0;

    }

    if (*incx == 1) {

	goto L20;

    }

/*        code for increment not equal to 1 */

    nincx = *n * *incx;

    i__1 = nincx;

    i__2 = *incx;

    for (i = 1; *incx < 0 ? i >= nincx : i <= nincx; i += *incx) {

	DX(i) = *da * DX(i);

/* L10: */

    }

    return 0;

/*        code for increment equal to 1   

          clean-up loop */

L20:

    m = *n % 5;

    if (m == 0) {

	goto L40;

    }

    i__2 = m;

    for (i = 1; i <= m; ++i) {

	DX(i) = *da * DX(i);

/* L30: */

    }

    if (*n < 5) {

	return 0;

    }

L40:

    mp1 = m + 1;

    i__2 = *n;

    for (i = mp1; i <= *n; i += 5) {

	DX(i) = *da * DX(i);

	DX(i + 1) = *da * DX(i + 1);

	DX(i + 2) = *da * DX(i + 2);

	DX(i + 3) = *da * DX(i + 3);

	DX(i + 4) = *da * DX(i + 4);

/* L50: */

    }

    return 0;

} /* dscal_ */