std::weibull_distribution
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| Elemento definito nell'header <random>
|
||
| template< class RealType = double > class weibull_distribution; |
(dal C++11) | |
Il
weibull_distribution soddisfa i requisiti di un RandomNumberDistribution e produce numeri casuali secondo la Distribuzione di Weibull:Original:
The
weibull_distribution meets the requirements of a RandomNumberDistribution and produces random numbers according to the Distribuzione di Weibull:The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
- f(x;a,b) = None
⎛a b
⎜
⎝None
⎞x b
⎟
⎠a-1
exp⎛
⎜
⎝-⎛
⎜
⎝None
⎞x b
⎟
⎠a
⎞
⎟
⎠
a is the parametro di forma and b the parametro di scala.
[modifica] 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
|
RealType |
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. |
[modifica] Membri funzioni
| 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) | |
| 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) | |
Original: Generation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. | |
| 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) | |
Original: Characteristics The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. | |
| restituisce il parametro di forma (a) parametro di distribuzione Original: returns the shape parameter (a) distribution parameter The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico) | |
| restituisce il parametro della scala di distribuzione (b) Original: returns the scale distribution parameter (b) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico) | |
| 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) | |
| 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) | |
| 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) | |
[modifica] Non membri funzioni
| 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) | |
| 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) | |
[modifica] Esempio
#include <iostream> #include <iomanip> #include <string> #include <map> #include <random> #include <cmath> int main() { std::random_device rd; std::mt19937 gen(rd()); std::weibull_distribution<> d; std::map<int, int> hist; for(int n=0; n<10000; ++n) { ++hist[std::round(d(gen))]; } for(auto p : hist) { std::cout << std::fixed << std::setprecision(1) << std::setw(2) << p.first << ' ' << std::string(p.second/200, '*') << '\n'; } }
Output:
0 ******************* 1 ******************* 2 ****** 3 ** 4 5 6 7 8
[modifica] Collegamenti esterni
- Weisstein, Eric W. "Weibull Distribution." Da MathWorld - Una risorsa Web Wolfram.Original:Weisstein, Eric W. "Weibull Distribution." From MathWorld--A Wolfram Web Resource.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions. - Weibull distribuzione . Da Wikipedia.Original:Weibull distribuzione . From Wikipedia.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
