RandomMixin

Mixin class that provides helper randomness functions.

Synopsis

Declared in <random.h>

template<typename T>
class RandomMixin;

Description

Intended to be used through CRTP: https://en.cppreference.com/w/cpp/language/crtp. An RNG class FunkyRNG would derive publicly from RandomMixin<FunkyRNG>. This permits RandomMixin from accessing the derived class's rand64() function, while also allowing the derived class to provide more.

The derived class must satisfy the RandomNumberGenerator concept.

Type Aliases

Name

Description

result_type

Result type of the generator, for the UniformRandomBitGenerator concept.

Member Functions

Name

Description

RandomMixin [constructor]

Constructors

operator=

Assignment operators

fillrand

Fill a span with random bytes.

operator()

Generate the next random value, for the UniformRandomBitGenerator concept.

rand

Generate a random integer in its entire (non‐negative) range.

rand256

generate a random uint256.

rand32

Generate a random 32‐bit integer.

rand_exp_duration

Return a duration sampled from an exponential distribution (https://en.wikipedia.org/wiki/Exponential_distribution). Successive events whose intervals are distributed according to this form a memoryless Poisson process. This should be used for repeated network events (e.g. sending a certain type of message) to minimize leaking information to observers.

rand_uniform_delay

Return the time point advanced by a uniform random duration.

rand_uniform_duration

Generate a uniform random duration in the range from 0 (inclusive) to range (exclusive).

randbits

randbits overloads

randbool

Generate a random boolean.

randbytes

randbytes overloads

randrange

randrange overloads