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#ifndef WOLFF_MODELS_DIHEDRAL_H
#define WOLFF_MODELS_DIHEDRAL_H
#include "potts.hpp"
namespace wolff {
template <unsigned q>
class dihedral_t {
public:
bool is_reflection;
unsigned x;
dihedral_t() : is_reflection(false), x(0) {}
dihedral_t(bool x, unsigned y) : is_reflection(x), x(y) {}
potts_t<q> act(const potts_t<q>& s) const {
if (this->is_reflection) {
return potts_t<q>(((q + this->x) - s.x) % q);
} else {
return potts_t<q>((this->x + s.x) % q);
}
}
dihedral_t<q> act(dihedral_t<q> r) const {
if (this->is_reflection) {
return dihedral_t<q>(!(r.is_reflection), ((q + this->x) - r.x) % q);
} else {
return dihedral_t<q>(r.is_reflection, (this->x + r.x) % q);
}
}
potts_t<q> act_inverse(potts_t<q> s) const {
if (this->is_reflection) {
return this->act(s);
} else {
return potts_t<q>(((s.x + q) - this->x) % q);
}
}
dihedral_t<q> act_inverse(dihedral_t<q> r) const {
if (this->is_reflection) {
return this->act(r);
} else {
return dihedral_t<q>(r.is_reflection, ((r.x + q) - this->x) % q);
}
}
};
}
#endif
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