std::poisson_distribution

 

C++

Apoyo de compiladores

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Encabezados de la biblioteca estándar

Requisitos denominados

Macros de prueba de característica (C++20)

Biblioteca de apoyo del lenguaje

Biblioteca de conceptos(C++20)

Biblioteca de diagnósticos

Biblioteca de gestión de memoria

Biblioteca de metaprogramación(C++11)

Biblioteca de servicios generales

Biblioteca de contenedores

Biblioteca de iteradores

Biblioteca de rangos(C++20)

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Biblioteca de procesamiento de texto

Biblioteca numérica

Biblioteca de fecha y hora

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Biblioteca del sistema de archivos(C++17)

Biblioteca de apoyo de concurrencia(C++11)

Biblioteca de apoyo de ejecución(C++26)

Especificaciones técnicas

Índice de símbolos

Bibliotecas externas

 

Biblioteca numérica

Funciones matemáticas comunes
Funciones matemáticas especiales(C++17)
Constantes matemáticas(C++20)
Algoritmos básicos de álgebra lineal(C++26)
Entorno de punto flotante(C++11)
Números complejos
Arrays numéricos
Generación de números pseudoaleatorios
Operaciones de factores
gcd (C++17)
lcm (C++17)
Interpolaciones
midpoint (C++20)
lerp (C++20)
Saturación aritmética
add_sat (C++26) sub_sat (C++26) saturate_cast (C++26)	mul_sat (C++26) div_sat (C++26)
Operaciones numéricas genéricas
iota (C++11)
ranges::iota (C++23)
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)
Operaciones de bits
bit_cast (C++20)
byteswap (C++23)
has_single_bit (C++20)
bit_ceil (C++20)
bit_floor (C++20)
bit_width (C++20)
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::poisson_distribution

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.

poisson_distribution::poisson_distribution

poisson_distribution::reset

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.

poisson_distribution::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.

poisson_distribution::mean

poisson_distribution::param

poisson_distribution::min

poisson_distribution::max

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

operator==operator!=

operator<<operator>>

 

Definido en el archivo de encabezado <random>
template<class IntType =int> class poisson_distribution;		(desde C++11)

Produce aleatorio no negativo i valores enteros, distribuidos de acuerdo con función de probabilidad discreta:

Original:

Produces random non-negative integer values i, distributed according to discrete probability function:

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P(i|μ) =

e-μ ·μi

i!

The value obtained is the probability of exactly i occurrences of a random event if the expected, mean number of its occurrence under the same conditions (on the same time/space interval) is μ.

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	IntType
param_type	el tipo del conjunto de parámetros, sin especificar Original: the type of the parameter set, unspecified The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Las funciones miembro

(constructor)	construye nueva distribución Original: constructs new distribution 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)
reset	restablece el estado interno de la distribución Original: resets the internal state of the distribution 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()	genera el siguiente número aleatorio en la distribución (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.
mean	returns the mean distribution parameter (mean number of occurrences of the event) (función miembro pública)
param	obtiene o establece el objeto de parámetro de distribución Original: gets or sets the distribution parameter object 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	devuelve el valor mínimo potencialmente generado Original: returns the minimum potentially generated value 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)
max	devuelve el valor máximo potencialmente generado Original: returns the maximum potentially generated value 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)

Terceros funciones

operator==operator!=	compara dos objetos de distribución (función)
operator<<operator>>	realiza flujo de entrada y salida en la distribución de números pseudo-aleatorios (función)

Ejemplo

Ejecuta este código

#include <iostream>#include <iomanip>#include <string>#include <map>#include <random>int main(){std::random_device rd;std::mt19937 gen(rd());   // if an event occurs 4 times a minute on average// how often is it that it occurs n times in one minute? std::poisson_distribution<> d(4);   std::map<int, int> hist;for(int n=0; n<10000;++n){++hist[d(gen)];}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 * 10 11 12 13

Enlaces externos

Weisstein, Eric W. "Poisson Distribution." De MathWorld - Un recurso del Web Wolfram .

Original:

Weisstein, Eric W. "Poisson Distribution." From MathWorld--A Wolfram Web Resource.

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