namespace xbt {
namespace random {
-bool Random::read_state(std::string filename)
+bool Random::read_state(const std::string& filename)
{
std::ifstream file(filename);
file >> mt19937_gen;
return not file.fail();
}
-bool Random::write_state(std::string filename)
+bool Random::write_state(const std::string& filename) const
{
std::ofstream file(filename);
file << mt19937_gen;
do {
value = mt19937_gen();
} while (value >= decltype(mt19937_gen)::max() - decltype(mt19937_gen)::max() % range);
- return value % range + min;
+ return static_cast<int>(value % range + min);
}
double XbtRandom::uniform_real(double min, double max)
do {
numerator = mt19937_gen() - decltype(mt19937_gen)::min();
} while (numerator == divisor);
- return min + (max - min) * numerator / divisor;
+ return min + (max - min) * static_cast<double>(numerator) / divisor;
}
double XbtRandom::exponential(double lambda)
return z0 * sd + mean;
}
-static std::unique_ptr<Random> default_random(new XbtRandom);
+static std::unique_ptr<Random> default_random = std::make_unique<XbtRandom>();
void set_implem_xbt()
{
- default_random.reset(new XbtRandom);
+ default_random = std::make_unique<XbtRandom>();
}
void set_implem_std()
{
- default_random.reset(new StdRandom);
+ default_random = std::make_unique<StdRandom>();
}
void set_mersenne_seed(int seed)
default_random->set_seed(seed);
}
-bool read_mersenne_state(std::string filename)
+bool read_mersenne_state(const std::string& filename)
{
return default_random->read_state(filename);
}
-bool write_mersenne_state(std::string filename)
+bool write_mersenne_state(const std::string& filename)
{
return default_random->write_state(filename);
}