Espaços nominais
Variantes
Acções

std::uniform_real_distribution

Da cppreference.com
< cpp‎ | numeric‎ | random

 
 
Biblioteca numéricos
Funções matemáticas comuns
De ponto flutuante ambiente
Números complexos
Matrizes numéricas
Pseudo-aleatório de geração de números
Tempo de compilação aritmética racional (C++11)
Genéricos operações numéricas
Original:
Generic numeric operations
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(C++11)
 
Pseudo-aleatório de geração de números
Motores e adaptadores de motor
Original:
Engines and engine adaptors
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Geradores
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Generators
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Distribuições
Original:
Distributions
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Distribuições uniformes
Original:
Uniform distributions
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uniform_real_distribution
(C++11)
Distribuições de Bernoulli
Original:
Bernoulli distributions
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Distribuições de Poisson
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Poisson distributions
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Distribuições normais
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Normal distributions
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Distribuições de amostragem
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Sampling distributions
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Seqüências de sementes
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Seed Sequences
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(C++11)
C biblioteca
Original:
C library
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std::uniform_real_distribution
Funções de membro
Original:
Member functions
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uniform_real_distribution::uniform_real_distribution
uniform_real_distribution::reset
Geração
Original:
Generation
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uniform_real_distribution::operator()
Características
Original:
Characteristics
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uniform_real_distribution::a
uniform_real_distribution::b
uniform_real_distribution::param
uniform_real_distribution::min
uniform_real_distribution::max
Não-membros funções
Original:
Non-member functions
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Definido no cabeçalho <random>
template< class RealType = double >
class uniform_real_distribution;
(desde C++11)
Produz aleatória de ponto flutuante de valores i, uniformemente distribuída pelo [a, b) intervalo, isto é, distribuídas de acordo com a função de probabilidade:
Original:
Produces random floating-point values i, uniformly distributed on the interval [a, b), that is, distributed according to the probability function:
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P(i|a,b) =
1
b − a
.

Índice

[editar] Tipos de membro

Tipo de membro
Original:
Member type
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Definition
result_type RealType
param_type
o tipo do conjunto de parâmetros, não especificado
Original:
the type of the parameter set, unspecified
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[editar] Funções de membro

constrói nova distribuição
Original:
constructs new distribution
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(função pública membro) [edit]
redefine o estado interno da distribuição
Original:
resets the internal state of the distribution
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(função pública membro) [edit]
Geração
Original:
Generation
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gera o próximo número aleatório na distribuição
Original:
generates the next random number in the distribution
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(função pública membro) [edit]
Características
Original:
Characteristics
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retorna a um parâmetro de distribuição' (valor mínimo)
Original:
returns the a distribution parameter (minimum value)
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(função pública membro) [edit]
retorna o parâmetro de distribuição b (valor máximo)
Original:
returns the b distribution parameter (maximum value)
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(função pública membro) [edit]
obtém ou define o objeto de parâmetro de distribuição
Original:
gets or sets the distribution parameter object
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(função pública membro) [edit]
retorna o valor mínimo potencialmente gerado
Original:
returns the minimum potentially generated value
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(função pública membro) [edit]
retorna o valor máximo potencialmente gerado
Original:
returns the maximum potentially generated value
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(função pública membro) [edit]

[editar] Não-membros funções

compara dois objetos de distribuição
Original:
compares two distribution objects
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(função) [edit]
executa fluxo de entrada e saída em pseudo-aleatório distribuição de números
Original:
performs stream input and output on pseudo-random number distribution
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(função) [edit]

[editar] Exemplo

imprimir 10 números aleatórios entre 1 e 2
Original:
print 10 random numbers between 1 and 2
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#include <random>
#include <iostream>
 
int main()
{
    std::random_device rd;
    std::mt19937 gen(rd());
    std::uniform_real_distribution<> dis(1, 2);
    for (int n = 0; n < 10; ++n) {
        std::cout << dis(gen) << ' ';
    }
    std::cout << '\n';
}

Saída:

1.80829 1.15391 1.18483 1.38969 1.36094 1.0648 1.97798 1.27984 1.68261 1.57326