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#include "polygen.h"
#include "util.h"
using namespace std;
namespace PolyGen::Derbyshire {
// Returns whether we just looped around
bool next(Poly &poly) {
for (int i = 1; i < (int)poly.size(); i++) {
if (poly[i] == -1) {
poly[i] = 1;
return false;
}
poly[i] = -1;
}
return true;
}
Poly atIndex(int index) {
Poly poly;
poly[0] = 1;
for (int i = 1; i <= N; i++) {
poly[i] = index & 1 ? 1 : -1;
index >>= 1;
}
assert(index == 0);
return poly;
}
vector<Job> genJobs(int targetJobs) {
int njobs = min(1 << N, ceil2(targetJobs));
int jobsize = (1 << N) / njobs;
vector<Job> jobs(njobs);
for (int i = 0; i < njobs; i++) {
jobs[i].init = atIndex(i * jobsize);
jobs[i].numItems = jobsize;
}
return jobs;
}
}
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