#include "stdafx.h"
/* -- translated by f2c (version 19940927).
You must link the resulting object file with the libraries:
-lf2c -lm (in that order)
*/
#include "hnum_f2c.h"
namespace harlinn
{
namespace numerics
{
namespace SuperLU
{
int saxpy_(integer *n, real *sa, real *sx, integer *incx, real *sy, integer *incy)
{
// System generated locals
integer i__1;
// Local variables
static integer i, m, ix, iy, mp1;
// constant times a vector plus a vector.
// uses unrolled loop for increments equal to one.
// jack dongarra, linpack, 3/11/78.
// modified 12/3/93, array(1) declarations changed to array(*)
//
// Parameter adjustments
// Function Body
#define SY(I) sy[(I)-1]
#define SX(I) sx[(I)-1]
if (*n <= 0)
{
return 0;
}
if (*sa == 0.f)
{
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 <= *n; ++i)
{
SY(iy) += *sa * SX(ix);
ix += *incx;
iy += *incy;
/* L10: */
}
return 0;
/* code for both increments equal to 1
clean-up loop */
L20:
m = *n % 4;
if (m == 0)
{
goto L40;
}
i__1 = m;
for (i = 1; i <= m; ++i)
{
SY(i) += *sa * SX(i);
}
if (*n < 4)
{
return 0;
}
L40:
mp1 = m + 1;
i__1 = *n;
for (i = mp1; i <= *n; i += 4)
{
SY(i) += *sa * SX(i);
SY(i + 1) += *sa * SX(i + 1);
SY(i + 2) += *sa * SX(i + 2);
SY(i + 3) += *sa * SX(i + 3);
}
return 0;
}
};
};
};