std::discrete_distribution

 

C++

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Numeri libreria

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Virgola mobile ambiente

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Array numerici

Pseudo-casuale generazione

In fase di compilazione aritmetica razionale(C++11)

Generici operazioni numeriche Original: Generic numeric operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

iota (C++11)

accumulate

inner_product

adjacent_difference

partial_sum

 

Pseudo-casuale generazione

Motori e adattatori del motore 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)

Generatori 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)

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

Distribuzioni uniformi 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 distribuzioni 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 distribuzioni 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)

Distribuzioni normali 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)

Distribuzioni di campionamento 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)

Seed Sequenze 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)

Libreria C 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::discrete_distribution

Membri funzioni 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.

discrete_distribution::discrete_distribution

discrete_distribution::reset

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

discrete_distribution::operator()

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

discrete_distribution::probabilities

discrete_distribution::param

discrete_distribution::min

discrete_distribution::max

Non membri funzioni 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>>

 

Elemento definito nell'header <random>
template<class IntType =int> class discrete_distribution;		(dal C++11)

std::discrete_distribution produce interi casuali sulla [0, n) intervallo, dove è definita la probabilità di ogni i intero individuo come w
i/S, cioè il peso' del numero intero ith diviso per la somma di tutti i pesi n.

Original:

std::discrete_distribution produces random integers on the interval [0, n), where the probability of each individual integer i is defined as w
i/S, that is the weight of the ith integer divided by the sum of all n weights.

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You can help to correct and verify the translation. Click here for instructions.

Membri tipi

Membro 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	il tipo di set di parametri, non specificato 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.

Membri funzioni

(costruttore)	costruisce nuova distribuzione 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. (metodo pubblico)
reset	ripristina lo stato interno della distribuzione 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. (metodo pubblico)
Generazione 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 il successivo numero casuale nella distribuzione Original: generates the next random number in the distribution The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
Caratteristiche Original: Characteristics The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
probabilities	ottiene l'elenco di probabilità Original: obtains the list of probabilities The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
param	ottiene o imposta l'oggetto parametro di distribuzione 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. (metodo pubblico)
min	restituisce il valore minimo potenzialmente generato 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. (metodo pubblico)
max	restituisce il valore massimo potenzialmente generato 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. (metodo pubblico)

Non membri funzioni

operator== operator!=	confronta due oggetti di distribuzione Original: compares two distribution objects The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione)
operator<< operator>>	esegue flusso di ingresso e di uscita sul pseudo-casuale distribuzione numerica Original: performs stream input and output on pseudo-random number distribution The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione)

Esempio

#include <iostream>#include <map>#include <random>   int main(){ std::random_device rd;std::mt19937 gen(rd()); std::discrete_distribution<> d({40, 10, 10, 40});std::map<int, int> m;for(int n=0; n<10000;++n){++m[d(gen)];}for(auto p : m){std::cout<< p.first<<" generated "<< p.second<<" times\n";}}

Output:

0 generated 4028 times 1 generated 978 times 2 generated 1012 times 3 generated 3982 times