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include compression

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2015-05-11 20:32:39 -07:00
parent c96c4c7af7
commit 4d3d9f7602
1 changed files with 54 additions and 6 deletions
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60
src/test/ddnf.cpp
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@ -24,7 +24,11 @@ void read_nums(std::istream& is, unsigned & x, unsigned& y) {
static char const* g_file = 0; static char const* g_file = 0;
void create_forwarding(char const* file, datalog::ddnf_core& ddnf, ptr_vector<tbv>& tbvs) { void create_forwarding(
char const* file,
datalog::ddnf_core& ddnf,
ptr_vector<tbv>& tbvs,
vector<unsigned_vector>& fwd_indices) {
IF_VERBOSE(1, verbose_stream() << "creating (and forgetting) forwarding index\n";); IF_VERBOSE(1, verbose_stream() << "creating (and forgetting) forwarding index\n";);
std::ifstream is(file); std::ifstream is(file);
@ -44,7 +48,8 @@ void create_forwarding(char const* file, datalog::ddnf_core& ddnf, ptr_vector<tb
read_nums(is, K, P); read_nums(is, K, P);
ddnf.reset_accumulate(); ddnf.reset_accumulate();
unsigned p; unsigned p;
unsigned_vector forwarding_index; fwd_indices.push_back(unsigned_vector());
unsigned_vector& forwarding_index = fwd_indices.back();
forwarding_index.resize(ddnf.size()); forwarding_index.resize(ddnf.size());
for (unsigned g = 0; g < K; ++g) { for (unsigned g = 0; g < K; ++g) {
is >> p; is >> p;
@ -129,17 +134,60 @@ static void read_args(char ** argv, int argc, int& i) {
} }
typedef std::pair<unsigned, unsigned> u_pair;
struct uu_eq { bool operator()(u_pair u1, u_pair u2) const { return u1 == u2; } };
typedef map<u_pair, unsigned, pair_hash<unsigned_hash, unsigned_hash>, uu_eq > pair_table;
static unsigned refine_forwarding(
unsigned_vector& p,
unsigned_vector const& q) {
unsigned sz = p.size();
unsigned n = 0, m = 0;
pair_table tbl;
for (unsigned i = 0; i < sz; ++i) {
u_pair pr = std::make_pair(p[i], q[i]);
if (tbl.find(pr, m)) {
p[i] = m;
}
else {
p[i] = n;
tbl.insert(pr, n++);
}
}
return n;
}
static void refine_forwarding(
datalog::ddnf_core& ddnf,
vector<unsigned_vector> const& fwd_indices) {
unsigned_vector roots;
roots.resize(ddnf.size());
for (unsigned i = 0; i < roots.size(); ++i) {
roots[i] = 0;
}
unsigned max_class = 1;
for (unsigned i = 0; i < fwd_indices.size(); ++i) {
unsigned_vector const& fwd = fwd_indices[i];
max_class = refine_forwarding(roots, fwd);
}
std::cout << "num classes: " << max_class << "\n";
}
void tst_ddnf(char ** argv, int argc, int& i) { void tst_ddnf(char ** argv, int argc, int& i) {
read_args(argv, argc, i); read_args(argv, argc, i);
ptr_vector<tbv> tbvs; ptr_vector<tbv> tbvs;
datalog::ddnf_core* ddnf = populate_ddnf(g_file, tbvs); datalog::ddnf_core* ddnf = populate_ddnf(g_file, tbvs);
IF_VERBOSE(1, ddnf->display(verbose_stream());); IF_VERBOSE(1, ddnf->display(verbose_stream()););
create_forwarding(g_file, *ddnf, tbvs); vector<unsigned_vector> fwd_indices;
create_forwarding(g_file, *ddnf, tbvs, fwd_indices);
refine_forwarding(*ddnf, fwd_indices);
std::cout << "resulting size: " << ddnf->size() << "\n"; std::cout << "resulting size: " << ddnf->size() << "\n";
ddnf->display_statistics(std::cout); ddnf->display_statistics(std::cout);
IF_VERBOSE(1, ddnf->display(verbose_stream());); IF_VERBOSE(1, ddnf->display(verbose_stream());
std::cout << ddnf->well_formed() << "\n"; verbose_stream() << ddnf->well_formed() << "\n";);
tbv_manager& tbvm = ddnf->get_tbv_manager(); tbv_manager& tbvm = ddnf->get_tbv_manager();
for (unsigned i = 0; i < tbvs.size(); ++i) { for (unsigned i = 0; i < tbvs.size(); ++i) {
tbvm.deallocate(tbvs[i]); tbvm.deallocate(tbvs[i]);