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std::uniform_real_distribution

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C++
 
Numerik-Bibliothek
Gemeinsame mathematischen Funktionen
Floating-Point-Umgebung
Komplexe Zahlen
Numerische Arrays
Pseudo-Zufallszahlen
Compile-time rationale Arithmetik (C++11)
Generische numerische Operationen
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Generic numeric operations
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iota(C++11)
accumulate
inner_product
adjacent_difference
partial_sum
 
Pseudo-Zufallszahlen
Motoren und Adaptern
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Engines and engine adaptors
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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)
Generatoren
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Generators
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random_device(C++11)
Ausschüttungen
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Distributions
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Uniform-Distributionen
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Uniform distributions
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uniform_int_distribution(C++11)
uniform_real_distribution(C++11)
generate_canonical(C++11)
Bernoulli-Distributionen
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Bernoulli distributions
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bernoulli_distribution(C++11)
binomial_distribution(C++11)
negative_binomial_distribution(C++11)
geometric_distribution(C++11)
Poisson-Verteilungen
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Poisson distributions
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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)
Normalverteilungen
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Normal distributions
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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-Distributionen
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Sampling distributions
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discrete_distribution(C++11)
piecewise_constant_distribution(C++11)
piecewise_linear_distribution(C++11)
Seed-Sequenzen
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Seed Sequences
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seed_seq(C++11)
C-Bibliothek
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C library
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rand
srand
RAND_MAX
 
std::uniform_real_distribution
Member-Funktionen
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Member functions
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uniform_real_distribution::uniform_real_distribution
uniform_real_distribution::reset
Generation
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Generation
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uniform_real_distribution::operator()
Merkmale
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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
Non-Member-Funktionen
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Non-member functions
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operator==
operator!=
operator<<
operator>>
 
definiert in Header <random>
template< class RealType = double >
class uniform_real_distribution;
 (seit C++11)
Erzeugt zufällige Gleitkommawerten i, gleichmäßig auf dem Intervall [a, b) verteilt, dass nach der Wahrscheinlichkeitsfunktion verteilt:
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
.

Inhaltsverzeichnis

[Bearbeiten] Mitglied Typen

Mitglied Typ
Original:
Member type
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 Definition
result_type RealType
param_type
die Art des Parametersatzes, nicht näher bezeichnet
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the type of the parameter set, unspecified
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[Bearbeiten] Member-Funktionen

 erzeugt eine neue Verteilung
(öffentliche Elementfunktion) [edit]
setzt den internen Zustand der Verteilung
Original:
resets the internal state of the distribution
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(öffentliche Elementfunktion) [edit]
Generation
Original:
Generation
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erzeugt das nächste Zufallszahl in der Verteilung
Original:
generates the next random number in the distribution
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(öffentliche Elementfunktion) [edit]
Merkmale
Original:
Characteristics
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kehrt das a Verteilungsparameter (Minimalwert)
Original:
returns the a distribution parameter (minimum value)
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(öffentliche Elementfunktion) [edit]
kehrt das b Verteilung Parameter (Maximalwert)
Original:
returns the b distribution parameter (maximum value)
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(öffentliche Elementfunktion) [edit]
ab oder legt die Verteilung Parameter-Objekt
Original:
gets or sets the distribution parameter object
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(öffentliche Elementfunktion) [edit]
gibt das Minimum potentiell generierten Wert
Original:
returns the minimum potentially generated value
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(öffentliche Elementfunktion) [edit]
gibt die maximale potentiell generierten Wert
Original:
returns the maximum potentially generated value
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(öffentliche Elementfunktion) [edit]

[Bearbeiten] Non-Member-Funktionen
vergleicht zwei Verteilung Objekte
Original:
compares two distribution objects
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(Funktion) [edit]
Stream führt Eingabe und Ausgabe auf Pseudozufallszahl Verteilung
Original:
performs stream input and output on pseudo-random number distribution
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(Funktion) [edit]

[Bearbeiten] Beispiel

Drucken 10 Zufallszahlen zwischen 1 und 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';
}

Output: 

1.80829 1.15391 1.18483 1.38969 1.36094 1.0648 1.97798 1.27984 1.68261 1.57326
Von „https://de.cppreference.com/mwiki/index.php?title=cpp/numeric/random/uniform_real_distribution&oldid=27677“