-/* Copyright (c) 2019-2020. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2019-2023. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#include <random>
#include <string>
-namespace simgrid {
-namespace xbt {
-namespace random {
+namespace simgrid::xbt::random {
/** A random number generator.
*
/**
* @brief Read the state of the Mersenne-Twister RNG from a file
*/
- void read_state(std::string filename)
- {
- std::ifstream file(filename);
- file >> mt19937_gen;
- }
+ bool read_state(const std::string& filename);
/**
* @brief Write the state of the Mersenne-Twister RNG to a file
*/
- void write_state(std::string filename)
- {
- std::ofstream file(filename);
- file << mt19937_gen;
- }
+ bool write_state(const std::string& filename) const;
/**
* @brief Draws an integer number uniformly in range [min, max] (min and max included)
*/
class XBT_PUBLIC StdRandom : public Random {
public:
- StdRandom() = default;
- explicit StdRandom(int seed) : Random(seed) {}
+ using Random::Random;
int uniform_int(int min, int max) override;
double uniform_real(double min, double max) override;
*/
class XBT_PUBLIC XbtRandom : public Random {
public:
- XbtRandom() = default;
- explicit XbtRandom(int seed) : Random(seed) {}
+ using Random::Random;
int uniform_int(int min, int max) override;
double uniform_real(double min, double max) override;
void set_mersenne_seed(int);
/**
- * @brief Read the state of the Mersenne-Twister RNG from a file
+ * @brief Read the state of the Mersenne-Twister RNG from a file.
*/
-void read_mersenne_state(std::string filename);
+bool read_mersenne_state(const std::string& filename);
/**
- * @brief Write the state of the Mersenne-Twister RNG to a file
+ * @brief Write the state of the Mersenne-Twister RNG to a file.
*/
-void write_mersenne_state(std::string filename);
+bool write_mersenne_state(const std::string& filename);
/**
* @brief Draws an integer number uniformly in range [min, max] (min and max included)
* @param sd Standard deviation of the normal distribution
*/
double normal(double mean, double sd);
-} // namespace random
-} // namespace xbt
-} // namespace simgrid
+} // namespace simgrid::xbt::random
#endif