std::shuffle_order_engine

Defined in header `<random>`
template< class Engine, std::size_t K > class shuffle_order_engine;		(since C++11)

shuffle_order_engine is a random number engine adaptor that shuffles the random numbers generated by the base engine. It maintains a table of size K and delivers a randomly selected number from that table when requested, replacing it with a number generated by the base engine.

The following typedef defines the random number engine with one commonly used parameter set:

Defined in header `<random>`
Type	Definition
`knuth_b`(C++11)	std::shuffle_order_engine<std::minstd_rand0, 256>

Template parameters

Engine	-	the type of the wrapped engine
K	-	the size of the internal table. Must be greater than $0$
Type requirements
- `Engine` must meet the requirements of RandomNumberEngine.

Member types

Member type	Definition
`result_type`	`Engine::result_type`

Member functions

(constructor)	constructs the engine adaptor (public member function)
seed	sets the state of the underlying engine (public member function)
base	returns the underlying engine (public member function)
Generation
operator()	advances the state of the underlying engine and returns the generated value (public member function)
discard	advances the adaptor's state by a specified amount (public member function)
Characteristics
min [static]	gets the smallest possible value in the output range of the underlying engine. (public static member function)
max [static]	gets the largest possible value in the output range of the underlying engine. (public static member function)

Non-member functions

operator==operator!=	compares the internal states of the adaptors and underlying engines (function)
operator<<operator>>	performs stream input and output on pseudo-random number engine adaptor (function)

Member objects

constexpr size_t table_size

[static]

the size of the internal table, K
(public static member constant)

Language
Standard Library Headers
Freestanding and hosted implementations
Named requirements
Language support library
Concepts library (C++20)
Diagnostics library
Utilities library
Strings library
Containers library
Iterators library
Ranges library (C++20)
Algorithms library
Numerics library
Input/output library
Localizations library
Regular expressions library (C++11)
Atomic operations library (C++11)
Thread support library (C++11)
Filesystem library (C++17)
Technical Specifications

Common mathematical functions
Special mathematical functions
Floating-point environment (C++11)
Complex numbers
Numeric arrays
Pseudo-random number generation
Compile-time rational arithmetic (C++11)
Numeric algorithms
gcd (C++17)
lcm (C++17)
Interpolations
midpoint (C++20)
lerp (C++20)
Generic numeric operations
iota (C++11)
accumulate
inner_product
adjacent_difference
partial_sum
reduce (C++17)
transform_reduce (C++17)
inclusive_scan (C++17)
exclusive_scan (C++17)
transform_inclusive_scan (C++17)
transform_exclusive_scan (C++17)
Bit operations
bit_cast (C++20)
ispow2 (C++20)
ceil2 (C++20)
floor2 (C++20)
log2p1 (C++20)

Uniform random bit generators
UniformRandomBitGenerator (C++20)
Engines and engine adaptors
linear_congruential_engine (C++11)
mersenne_twister_engine (C++11)
subtract_with_carry_engine (C++11)
discard_block_engine (C++11)
independent_bits_engine (C++11)
shuffle_order_engine (C++11)
Non-deterministic generator
random_device (C++11)
Distributions
Uniform distributions
uniform_int_distribution (C++11)
uniform_real_distribution (C++11)
generate_canonical (C++11)
Bernoulli distributions
bernoulli_distribution (C++11)
binomial_distribution (C++11)
negative_binomial_distribution (C++11)
geometric_distribution (C++11)
Poisson distributions
poisson_distribution (C++11)
exponential_distribution (C++11)
gamma_distribution (C++11)
weibull_distribution (C++11)
extreme_value_distribution (C++11)
Normal distributions
normal_distribution (C++11)
lognormal_distribution (C++11)
chi_squared_distribution (C++11)
cauchy_distribution (C++11)
fisher_f_distribution (C++11)
student_t_distribution (C++11)
Sampling distributions
discrete_distribution (C++11)
piecewise_constant_distribution (C++11)
piecewise_linear_distribution (C++11)
Seed Sequences
seed_seq (C++11)
C library
rand
srand
RAND_MAX

Member functions
shuffle_order_engine::shuffle_order_engine
shuffle_order_engine::seed
shuffle_order_engine::base
Generation
shuffle_order_engine::operator()
shuffle_order_engine::discard
Characteristics
shuffle_order_engine::min
shuffle_order_engine::max
Non-member functions
operator==operator!=
operator<<operator>>