importint cassert in params.h to avoid compilation errors

include/params.h

@@ -6,6 +6,7 @@
 #include <vector>
 #include <stdexcept>
 #include <complex>
+#include <cassert>
 
 using namespace NTL;
 
@@ -330,4 +331,4 @@ inline void decompose(std::vector<int>& res, const int input, const int b, const
         throw std::overflow_error("Input is too big for given length\n");
 }
 
-#endif
+#endif