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merging with the lp fork

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2017-05-10 16:53:25 -07:00
parent cf695ab876
commit b08f094620
44 changed files with 902 additions and 319 deletions
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38
src/util/lp/permutation_matrix.h
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@ -132,42 +132,4 @@ class permutation_matrix : public tail_matrix<T, X> {
}; // end of the permutation class
#ifdef LEAN_DEBUG
template <typename T, typename X>
class permutation_generator {
unsigned m_n;
permutation_generator* m_lower;
bool m_done = false;
permutation_matrix<T, X> m_current;
unsigned m_last;
public:
permutation_generator(unsigned n);
permutation_generator(const permutation_generator & o);
bool move_next();
~permutation_generator() {
if (m_lower != nullptr) {
delete m_lower;
}
}
permutation_matrix<T, X> *current() {
return &m_current;
}
};
template <typename T, typename X>
inline unsigned number_of_inversions(permutation_matrix<T, X> & p);
template <typename T, typename X>
int sign(permutation_matrix<T, X> & p) {
return is_even(number_of_inversions(p))? 1: -1;
}
template <typename T, typename X>
T det_val_on_perm(permutation_matrix<T, X>* u, const matrix<T, X>& m);
template <typename T, typename X>
T determinant(const matrix<T, X>& m);
#endif
}