std::mersenne_twister_engine

 

C++

Language

Standard library headers

Concepts

Utilities library

Strings library

Containers library

Algorithms library

Iterators library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

Technical Specifications

 

Numerics library

Common mathematical functions

Floating-point environment

Complex numbers

Numeric arrays

Pseudo-random number generation

Compile-time rational arithmetic (C++11)

Generic numeric operations

iota (C++11)

accumulate

inner_product

adjacent_difference

partial_sum

 

Pseudo-random number generation

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)

Generators

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

 

std::mersenne_twister_engine

Member functions

mersenne_twister_engine::mersenne_twister_engine

mersenne_twister_engine::seed

Generation

mersenne_twister_engine::operator()

mersenne_twister_engine::discard

Characteristics

mersenne_twister_engine::min

mersenne_twister_engine::max

Non-member functions

operator==operator!=

operator<<operator>>

 

Defined in header <random>
template<     class UIntType,     size_t w, size_t n, size_t m, size_t r,     UIntType a, size_t u, UIntType d, size_t s,     UIntType b, size_t t,     UIntType c, size_t l, UIntType f > class mersenne_twister_engine;		(since C++11)

mersenne_twister_engine is a random number engine based on Mersenne Twister algorithm. It produces high quality unsigned integer random numbers.

The following typedefs define the random number engine with two commonly used parameter sets:

Defined in header <random>
Type	Definition
mt19937	std::mersenne_twister_engine<std::uint_fast32_t, 32, 624, 397, 31,                              0x9908b0df, 11,                              0xffffffff, 7,                              0x9d2c5680, 15,                              0xefc60000, 18, 1812433253> 32-bit Mersenne Twister by Matsumoto and Nishimura, 1998
mt19937_64	std::mersenne_twister_engine<std::uint_fast64_t, 64, 312, 156, 31,                              0xb5026f5aa96619e9, 29,                              0x5555555555555555, 17,                              0x71d67fffeda60000, 37,                              0xfff7eee000000000, 43, 6364136223846793005> 64-bit Mersenne Twister by Matsumoto and Nishimura, 2000

Member types

Member type	Definition
result_type	The integral type generated by the engine. Results are undefined if this is not an unsigned integral type.

Member functions

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

Non-member functions

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

Member objects

constexpr size_t word_size [static]	(public static member constant)
constexpr size_t state_size [static]	(public static member constant)
constexpr size_t shift_size [static]	(public static member constant)
constexpr size_t mask_bits [static]	(public static member constant)
constexpr UIntType xor_mask [static]	(public static member constant)
constexpr size_t tempering_u [static]	(public static member constant)
constexpr UIntType tempering_d [static]	(public static member constant)
constexpr size_t tempering_s [static]	(public static member constant)
constexpr UIntType tempering_b [static]	(public static member constant)
constexpr size_t tempering_t [static]	(public static member constant)
constexpr UIntType tempering_c [static]	(public static member constant)
constexpr size_t tempering_l [static]	(public static member constant)
constexpr UIntType initialization_multiplier [static]	(public static member constant)
constexpr UIntType default_seed [static]	(public static member constant)