random_seed.hpp

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#pragma once
 
#include <random>
 
namespace wmtk::utils {
 
class RandomSeedSingleton
{
public:
    static RandomSeedSingleton& instance()
    {
        static RandomSeedSingleton _instance;
        return _instance;
    }
 
    inline void set_seed(uint64_t val) { m_gen.seed(val); std::srand(val); }
    inline unsigned int get_seed() { return m_gen(); }
 
private:
    RandomSeedSingleton()
    {
        std::random_device rd;
        set_seed(rd());
    }
 
    std::mt19937 m_gen;
};
 
 
inline unsigned int get_random_seed()
{
    return RandomSeedSingleton::instance().get_seed();
}
 
inline void set_random_seed(uint64_t val)
{
    RandomSeedSingleton::instance().set_seed(val);
}
 
} // namespace wmtk::utils