add pdd

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

src/test/CMakeLists.txt

@@ -82,6 +82,7 @@ add_executable(test-z3
   optional.cpp
   parray.cpp
   pb2bv.cpp
+  pdd.cpp
   permutation.cpp
   polynomial.cpp
   polynorm.cpp

src/test/main.cpp

@@ -253,6 +253,7 @@ int main(int argc, char ** argv) {
     TST_ARGV(sat_local_search);
     TST_ARGV(cnf_backbones);
     TST(bdd);
+    TST(pdd);
     TST(solver_pool);
     //TST_ARGV(hs);
 }

src/test/pdd.cpp

@@ -0,0 +1,26 @@
+#include "math/dd/dd_pdd.h"
+
+namespace dd {
+    static void test1() {
+        pdd_manager m(20);
+        pdd v0 = m.mk_var(0);
+        pdd v1 = m.mk_var(1);
+        pdd v2 = m.mk_var(2);
+        std::cout << v0 << "\n";
+        std::cout << v1 << "\n";
+        std::cout << v2 << "\n";
+        pdd c1 = v0 * v1 * v2;
+        pdd c2 = v2 * v0 * v1;
+        std::cout << c1 << "\n";
+        SASSERT(c1 == c2);
+
+        c1 = v0 + v1 + v2;
+        c2 = v2 + v1 + v0;
+        std::cout << c1 << "\n";
+        SASSERT(c1 == c2);
+    }
+}
+
+void tst_pdd() {
+    dd::test1();
+}