/usr/share/doc/libsuperlu-dev/tests/MATGEN/zdotc.c is in libsuperlu3-dev 3.0+20070106-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | /* -- translated by f2c (version 19940927).
You must link the resulting object file with the libraries:
-lf2c -lm (in that order)
*/
#include "f2c.h"
/* Double Complex */ VOID zdotc_(doublecomplex * ret_val, integer *n,
doublecomplex *zx, integer *incx, doublecomplex *zy, integer *incy)
{
/* System generated locals */
integer i__1, i__2;
doublecomplex z__1, z__2, z__3;
/* Builtin functions */
void d_cnjg(doublecomplex *, doublecomplex *);
/* Local variables */
static integer i;
static doublecomplex ztemp;
static integer ix, iy;
/* forms the dot product of a vector.
jack dongarra, 3/11/78.
modified 12/3/93, array(1) declarations changed to array(*)
Parameter adjustments */
--zy;
--zx;
/* Function Body */
ztemp.r = 0., ztemp.i = 0.;
ret_val->r = 0., ret_val->i = 0.;
if (*n <= 0) {
return ;
}
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) {
d_cnjg(&z__3, &zx[ix]);
i__2 = iy;
z__2.r = z__3.r * zy[iy].r - z__3.i * zy[iy].i, z__2.i = z__3.r *
zy[iy].i + z__3.i * zy[iy].r;
z__1.r = ztemp.r + z__2.r, z__1.i = ztemp.i + z__2.i;
ztemp.r = z__1.r, ztemp.i = z__1.i;
ix += *incx;
iy += *incy;
/* L10: */
}
ret_val->r = ztemp.r, ret_val->i = ztemp.i;
return ;
/* code for both increments equal to 1 */
L20:
i__1 = *n;
for (i = 1; i <= *n; ++i) {
d_cnjg(&z__3, &zx[i]);
i__2 = i;
z__2.r = z__3.r * zy[i].r - z__3.i * zy[i].i, z__2.i = z__3.r *
zy[i].i + z__3.i * zy[i].r;
z__1.r = ztemp.r + z__2.r, z__1.i = ztemp.i + z__2.i;
ztemp.r = z__1.r, ztemp.i = z__1.i;
/* L30: */
}
ret_val->r = ztemp.r, ret_val->i = ztemp.i;
return ;
} /* zdotc_ */
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