Blame thirdparty/superlu/SuperLU_4.1/CBLAS/scasum.c
|
kusano |
7d535a |
|
|
kusano |
7d535a |
/* -- translated by f2c (version 19940927).
|
|
kusano |
7d535a |
You must link the resulting object file with the libraries:
|
|
kusano |
7d535a |
-lf2c -lm (in that order)
|
|
kusano |
7d535a |
*/
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
#include "f2c.h"
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
real scasum_(integer *n, complex *cx, integer *incx)
|
|
kusano |
7d535a |
{
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
/* System generated locals */
|
|
kusano |
7d535a |
integer i__1, i__2, i__3;
|
|
kusano |
7d535a |
real ret_val, r__1, r__2;
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
/* Builtin functions */
|
|
kusano |
7d535a |
double r_imag(complex *);
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
/* Local variables */
|
|
kusano |
7d535a |
static integer i, nincx;
|
|
kusano |
7d535a |
static real stemp;
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
/* takes the sum of the absolute values of a complex vector and
|
|
kusano |
7d535a |
returns a single precision result.
|
|
kusano |
7d535a |
jack dongarra, linpack, 3/11/78.
|
|
kusano |
7d535a |
modified 3/93 to return if incx .le. 0.
|
|
kusano |
7d535a |
modified 12/3/93, array(1) declarations changed to array(*)
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
Parameter adjustments
|
|
kusano |
7d535a |
Function Body */
|
|
kusano |
7d535a |
#define CX(I) cx[(I)-1]
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
ret_val = 0.f;
|
|
kusano |
7d535a |
stemp = 0.f;
|
|
kusano |
7d535a |
if (*n <= 0 || *incx <= 0) {
|
|
kusano |
7d535a |
return ret_val;
|
|
kusano |
7d535a |
}
|
|
kusano |
7d535a |
if (*incx == 1) {
|
|
kusano |
7d535a |
goto L20;
|
|
kusano |
7d535a |
}
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
/* code for increment not equal to 1 */
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
nincx = *n * *incx;
|
|
kusano |
7d535a |
i__1 = nincx;
|
|
kusano |
7d535a |
i__2 = *incx;
|
|
kusano |
7d535a |
for (i = 1; *incx < 0 ? i >= nincx : i <= nincx; i += *incx) {
|
|
kusano |
7d535a |
i__3 = i;
|
|
kusano |
7d535a |
stemp = stemp + (r__1 = CX(i).r, dabs(r__1)) + (r__2 = r_imag(&CX(
|
|
kusano |
7d535a |
i)), dabs(r__2));
|
|
kusano |
7d535a |
/* L10: */
|
|
kusano |
7d535a |
}
|
|
kusano |
7d535a |
ret_val = stemp;
|
|
kusano |
7d535a |
return ret_val;
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
/* code for increment equal to 1 */
|
|
kusano |
7d535a |
|
|
kusano |
7d535a |
L20:
|
|
kusano |
7d535a |
i__2 = *n;
|
|
kusano |
7d535a |
for (i = 1; i <= *n; ++i) {
|
|
kusano |
7d535a |
i__1 = i;
|
|
kusano |
7d535a |
stemp = stemp + (r__1 = CX(i).r, dabs(r__1)) + (r__2 = r_imag(&CX(
|
|
kusano |
7d535a |
i)), dabs(r__2));
|
|
kusano |
7d535a |
/* L30: */
|
|
kusano |
7d535a |
}
|
|
kusano |
7d535a |
ret_val = stemp;
|
|
kusano |
7d535a |
return ret_val;
|
|
kusano |
7d535a |
} /* scasum_ */
|
|
kusano |
7d535a |
|