#ifndef COMMON_H_
#define COMMON_H_
// standard
#include <iostream>
using std::cout;
using std::cerr;
using std::endl;
using std::ios_base;
#include <fstream>
using std::ifstream;
using std::ofstream;
#include <sstream>
using std::stringstream;
#include <string>
using std::string;
#define NDEBUG /* turns off assertions */
//#undef NDEBUG /* turns on assertions */
#include <cassert>
#define SAFE_MODE /* checking of function inputs turned on */
#endif /*COMMON_H_*/
