std::random_device

 

C++

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Generación de números pseudoaleatorios
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gcd (C++17)
lcm (C++17)
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midpoint (C++20)
lerp (C++20)
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ranges::iota (C++23)
accumulate
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rotl (C++20)
rotr (C++20)
countl_zero (C++20)
countl_one (C++20)
countr_zero (C++20)
countr_one (C++20)
popcount (C++20)
endian (C++20)

 

Generación de números pseudoaleatorios

Motores y adaptadores de motor Original: Engines and engine adaptors The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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)

Generadores Original: Generators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

random_device (C++11)

Distribuciones Original: Distributions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Distribuciones uniformes Original: Uniform distributions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

uniform_int_distribution (C++11)

uniform_real_distribution (C++11)

generate_canonical (C++11)

Bernoulli distribuciones Original: Bernoulli distributions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

bernoulli_distribution (C++11)

binomial_distribution (C++11)

negative_binomial_distribution (C++11)

geometric_distribution (C++11)

Poisson distribuciones Original: Poisson distributions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

poisson_distribution (C++11)

exponential_distribution (C++11)

gamma_distribution (C++11)

weibull_distribution (C++11)

extreme_value_distribution (C++11)

Distribuciones normales Original: Normal distributions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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)

Distribuciones de muestreo Original: Sampling distributions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

discrete_distribution (C++11)

piecewise_constant_distribution (C++11)

piecewise_linear_distribution (C++11)

Secuencias de semillas Original: Seed Sequences The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

seed_seq (C++11)

C biblioteca Original: C library The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

rand

srand

RAND_MAX

 

std::random_device

Las funciones miembro Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

random_device::random_device

Generación Original: Generation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

random_device::operator()

Características Original: Characteristics The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

random_device::entropy

random_device::min

random_device::max

 

Definido en el archivo de encabezado <random>
class random_device;		(desde C++11)

std::random_device es un uniformemente distribuida generador de número entero de números aleatorios, que produce no deterministas números aleatorios, si una fuente no determinista (por ejemplo, un dispositivo de hardware) está disponible para la aplicación .

Original:

std::random_device is a uniformly-distributed integer random number generator, which produces non-deterministic random numbers, if a non-deterministic source (e.g. a hardware device) is available to the implementation.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Tipos de miembros

Miembro de tipo Original: Member type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.	Definition
result_type	unsignedint

Las funciones miembro

Construcción Original: Construction The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
(constructor)	construye el motor Original: constructs the engine The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función miembro pública)
operator= (eliminada)	el operador de asignación se elimina Original: the assignment operator is deleted The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función miembro pública)
Generación Original: Generation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
operator()	avanza el estado del motor de generación aleatorio y devuelve el valor generado (función miembro pública)
Características Original: Characteristics The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
entropy	obtiene la estimación de la entropía para el generador de números aleatorios no determinista Original: obtains the entropy estimate for the non-deterministic random number generator The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función miembro pública)
min [estático]	se obtiene el valor más pequeño posible en el rango de salida Original: gets the smallest possible value in the output range The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función miembro estática pública)
max [estático]	gets the largest possible value in the output range (función miembro estática pública)

Ejemplo

Ejecuta este código

#include <iostream>#include <string>#include <map>#include <random>int main(){ std::random_device rd;std::map<int, int> hist;for(int n=0; n<20000;++n)++hist[rd()%10];for(auto p : hist)std::cout<< p.first<<" : "<<std::string(p.second/100, '*')<<'\n';}

Salida:

0 : ******************** 1 : ******************* 2 : ******************** 3 : ******************** 4 : ******************** 5 : ******************* 6 : ******************** 7 : ******************** 8 : ******************* 9 : ********************