std::linear_congruential_engine

 

C++

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Regular expressions library (C++11)

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Numerics library

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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)

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bernoulli_distribution (C++11)

binomial_distribution (C++11)

negative_binomial_distribution (C++11)

geometric_distribution (C++11)

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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::linear_congruential_engine

Member functions

linear_congruential_engine::linear_congruential_engine

linear_congruential_engine::seed

Generation

linear_congruential_engine::operator()

linear_congruential_engine::discard

Characteristics

linear_congruential_engine::min

linear_congruential_engine::max

Non-member functions

operator== operator!=

operator<< operator>>

 

Defined in header <random>
template<     class UIntType,     UIntType a,     UIntType c,     UIntType m > class linear_congruential_engine;		(since C++11)

A linear_congruential_engine produces unsigned integer pseudorandom numbers. The state of a LCG is of size 1 and consists of a single integer.

The transition algorithm of the LCG function is x
i+1 ← (ax
i+c) mod m.

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 variables

constexpr UIntType multiplier [static]	the multiplier term (a). (public static member constant)
constexpr UIntType increment [static]	the increment term (c). (public static member constant)
constexpr UIntType modulus [static]	the modulus term (m). (public static member constant)
constexpr UIntType default_seed [static]	the default seed (1). (public static member constant)

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)
operator<< operator>>	performs stream input and output on pseudo-random number engine (function)