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git-subtree-dir: erigon-lib git-subtree-mainline:3c8cbda809git-subtree-split:93d9c9d9fe
33 lines
767 B
C++
33 lines
767 B
C++
#ifndef STARKWARE_UTILS_PRNG_H_
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#define STARKWARE_UTILS_PRNG_H_
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#include <limits>
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#include <random>
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namespace starkware {
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class Prng {
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public:
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Prng() : mt_prng_(std::random_device()()) {}
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/*
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Returns a random integer in the range [lower_bound, upper_bound].
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*/
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uint64_t RandomUint64(uint64_t lower_bound, uint64_t upper_bound) {
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return std::uniform_int_distribution<uint64_t>(lower_bound, upper_bound)(mt_prng_);
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}
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/*
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Returns a random integer in the range [0, 2^64).
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Note: This random number generator is NOT cryptographically secure.
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*/
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uint64_t RandomUint64() { return RandomUint64(0, std::numeric_limits<uint64_t>::max()); }
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private:
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std::mt19937 mt_prng_;
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};
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} // namespace starkware
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#endif // STARKWARE_UTILS_PRNG_H_
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