static ut64 getRefPtr(RCoreObjc *objc, ut64 classMethodsVA, bool *res) {
ut64 namePtr = readQword (objc, classMethodsVA);
int i, cnt = 0;
ut64 res_at = 0LL;
const char *k = addr_key (namePtr);
*res = false;
for (i = 0; ; i++) {
ut64 at = sdb_array_get_num (objc->db, k, i, NULL);
if (!at) {
break;
}
if (inBetween (objc->_selrefs, at)) {
*res = false;
res_at = at;
} else if (inBetween (objc->_msgrefs, at)) {
*res = true;
res_at = at;
} else if (inBetween (objc->_const, at)) {
cnt++;
}
}
if (cnt > 1) {
return 0LL;
}
return res_at;
}
void set_num_threads(int threads)
{
if (threads == -1)
num_threads = ParallelPrimeSieve::getMaxThreads();
else
num_threads = inBetween(1, threads, ParallelPrimeSieve::getMaxThreads());
}
/* intersect:
* Returns true if the segment [c,d] blocks a and b from seeing each other.
* More specifically, returns true iff c or d lies on (a,b) or the two
* segments intersect as open sets.
*/
int intersect(Ppoint_t a,Ppoint_t b,Ppoint_t c,Ppoint_t d)
{
int a_abc;
int a_abd;
int a_cda;
int a_cdb;
a_abc = wind(a,b,c);
if ((a_abc == 0) && inBetween (a,b,c)) {
return 1;
}
a_abd = wind(a,b,d);
if ((a_abd == 0) && inBetween (a,b,d)) {
return 1;
}
a_cda = wind(c,d,a);
a_cdb = wind(c,d,b);
/* True if c and d are on opposite sides of ab,
* and a and b are on opposite sides of cd.
*/
return (((a_abc * a_abd) < 0) && ((a_cda * a_cdb) < 0));
}
// Returns true iff the point c lies on the closed segment ab.
//
bool pointOnLine(const Point& a, const Point& b, const Point& c,
const double tolerance)
{
// Do this a bit more optimally for orthogonal AB line segments.
if (a.x == b.x)
{
return (a.x == c.x) &&
(((a.y < c.y) && (c.y < b.y)) ||
((b.y < c.y) && (c.y < a.y)));
}
else if (a.y == b.y)
{
return (a.y == c.y) &&
(((a.x < c.x) && (c.x < b.x)) ||
((b.x < c.x) && (c.x < a.x)));
}
// Or use the general case.
return (vecDir(a, b, c, tolerance) == 0) && inBetween(a, b, c);
}
/* intersect1:
* Returns true if the polygon segment [q,n) blocks a and b from seeing
* each other.
* More specifically, returns true iff the two segments intersect as open
* sets, or if q lies on (a,b) and either n and p lie on
* different sides of (a,b), i.e., wind(a,b,n)*wind(a,b,p) < 0, or the polygon
* makes a left turn at q, i.e., wind(p,q,n) > 0.
*
* We are assuming the p,q,n are three consecutive vertices of a barrier
* polygon with the polygon interior to the right of p-q-n.
*
* Note that given the constraints of our problem, we could probably
* simplify this code even more. For example, if abq are collinear, but
* q is not in (a,b), we could return false since n will not be in (a,b)
* nor will the (a,b) intersect (q,n).
*
* Also note that we are computing w_abq twice in a tour of a polygon,
* once for each edge of which it is a vertex.
*/
static int intersect1(Ppoint_t a,Ppoint_t b,Ppoint_t q,Ppoint_t n, Ppoint_t p)
{
int w_abq;
int w_abn;
int w_qna;
int w_qnb;
w_abq = wind(a,b,q);
w_abn = wind(a,b,n);
/* If q lies on (a,b),... */
if ((w_abq == 0) && inBetween (a,b,q)) {
return ((w_abn * wind(a,b,p) < 0) || (wind(p,q,n) > 0));
}
else {
w_qna = wind(q,n,a);
w_qnb = wind(q,n,b);
/* True if q and n are on opposite sides of ab,
* and a and b are on opposite sides of qn.
*/
return (((w_abq * w_abn) < 0) && ((w_qna * w_qnb) < 0));
}
}
// Returns true iff the point c lies on the closed segment ab.
//
bool pointOnLine(const Point& a, const Point& b, const Point& c,
const double tolerance)
{
return (vecDir(a, b, c, tolerance) == 0) && inBetween(a, b, c);
}
void set_sieve_size(int kilobytes)
{
sieve_size = inBetween(1, kilobytes, 2048);
}