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| author | Pieter Wuille <pieter.wuille@gmail.com> | 2018-03-20 19:10:39 -0700 |
|---|---|---|
| committer | Pieter Wuille <pieter.wuille@gmail.com> | 2018-03-20 21:24:49 -0700 |
| commit | 1ec1602a4549f6b68586cead8eff701bceb624f5 (patch) | |
| tree | 39620ad95f180c7e3cb24ada85e8fbb70defa921 /src/random.h | |
| parent | 4ba3d4f4393d81148422d24d222fe7ed00130194 (diff) | |
| download | bitcoin-1ec1602a4549f6b68586cead8eff701bceb624f5.tar.xz | |
Make FastRandomContext support standard C++11 RNG interface
This makes it possible to plug it into the various standard C++11 random
distribution algorithms and other functions like std::shuffle.
Diffstat (limited to 'src/random.h')
| -rw-r--r-- | src/random.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/random.h b/src/random.h index ea88670a37..632ab05883 100644 --- a/src/random.h +++ b/src/random.h @@ -11,6 +11,7 @@ #include <uint256.h> #include <stdint.h> +#include <limits> /* Seed OpenSSL PRNG with additional entropy data */ void RandAddSeed(); @@ -121,6 +122,12 @@ public: /** Generate a random boolean. */ bool randbool() { return randbits(1); } + + // Compatibility with the C++11 UniformRandomBitGenerator concept + typedef uint64_t result_type; + static constexpr uint64_t min() { return 0; } + static constexpr uint64_t max() { return std::numeric_limits<uint64_t>::max(); } + inline uint64_t operator()() { return rand64(); } }; /* Number of random bytes returned by GetOSRand. |