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52 lines
1.3 KiB
C++
52 lines
1.3 KiB
C++
#ifndef RADII_LIB_RANDOM
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#define RADII_LIB_RANDOM
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#include <limits>
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#include <random>
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template <typename T = unsigned long> class random_number_generator {
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std::random_device seed;
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std::mt19937_64 generator;
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std::uniform_int_distribution<T> range;
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T l = std::numeric_limits<T>::min();
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T h = std::numeric_limits<T>::max();
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public:
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random_number_generator(T high = std::numeric_limits<T>::max());
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random_number_generator(T low, T high);
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T operator()();
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T operator()(T h);
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T operator()(T l, T h);
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};
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template <typename T>
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random_number_generator<T>::random_number_generator(T high) : h(high) {
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generator.seed(seed());
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range = std::uniform_int_distribution<T>(l, h);
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}
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template <typename T>
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random_number_generator<T>::random_number_generator(T low, T high)
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: l(low), h(high) {
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generator.seed(seed());
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range = std::uniform_int_distribution<T>(l, h);
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}
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template <typename T> T random_number_generator<T>::operator()() {
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return range(generator);
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}
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template <typename T> T random_number_generator<T>::operator()(T high) {
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h = high;
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range = std::uniform_int_distribution<T>(l, h);
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return range(generator);
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}
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template <typename T> T random_number_generator<T>::operator()(T low, T high) {
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l = low;
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h = high;
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range = std::uniform_int_distribution<T>(l, h);
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return range(generator);
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}
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#endif |