math/random_number_generator.hpp

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• Last update: 2025-03-08 01:15:39+09:00
• Include: #include "math/random_number_generator.hpp"

Verified with

• verify/unit_test/montgomery_modint_32.test.cpp
• verify/unit_test/sqrt_floor.test.cpp

Code

struct RandomNumberGenerator {
    mt19937 mt;
    RandomNumberGenerator() : mt(random_device()()) {}
    long long operator()(long long a, long long b) { return uniform_int_distribution<long long>(a, b - 1)(mt); }
    long long operator()(long long b) { return (*this)(0, b); }
};

#line 1 "math/random_number_generator.hpp"
struct RandomNumberGenerator {
    mt19937 mt;
    RandomNumberGenerator() : mt(random_device()()) {}
    long long operator()(long long a, long long b) { return uniform_int_distribution<long long>(a, b - 1)(mt); }
    long long operator()(long long b) { return (*this)(0, b); }
};

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