/* -- translated by f2c (version 19940927).
You must link the resulting object file with the libraries:
-lf2c -lm (in that order)
*/
#include "f2c.h"
real sasum_(integer *n, real *sx, integer *incx)
{
/* System generated locals */
integer i__1, i__2;
real ret_val, r__1, r__2, r__3, r__4, r__5, r__6;
/* Local variables */
static integer i, m, nincx;
static real stemp;
static integer mp1;
/* takes the sum of the absolute values.
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 SX(I) sx[(I)-1]
ret_val = 0.f;
stemp = 0.f;
if (*n <= 0 || *incx <= 0) {
return ret_val;
}
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) {
stemp += (r__1 = SX(i), dabs(r__1));
/* L10: */
}
ret_val = stemp;
return ret_val;
/* code for increment equal to 1
clean-up loop */
L20:
m = *n % 6;
if (m == 0) {
goto L40;
}
i__2 = m;
for (i = 1; i <= m; ++i) {
stemp += (r__1 = SX(i), dabs(r__1));
/* L30: */
}
if (*n < 6) {
goto L60;
}
L40:
mp1 = m + 1;
i__2 = *n;
for (i = mp1; i <= *n; i += 6) {
stemp = stemp + (r__1 = SX(i), dabs(r__1)) + (r__2 = SX(i + 1), dabs(
r__2)) + (r__3 = SX(i + 2), dabs(r__3)) + (r__4 = SX(i + 3),
dabs(r__4)) + (r__5 = SX(i + 4), dabs(r__5)) + (r__6 = SX(i +
5), dabs(r__6));
/* L50: */
}
L60:
ret_val = stemp;
return ret_val;
} /* sasum_ */