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ROOT 6.07/09 Reference Guide |
This class provides a static interface for generating random numbers.
By default a private copy of TRandom3 is used to generate all random numbers.
Definition at line 24 of file RooRandom.h.
Classes | |
struct | Guard |
Public Member Functions | |
virtual | ~RooRandom () |
Static Public Member Functions | |
static Double_t | gaussian (TRandom *generator=randomGenerator()) |
Return a Gaussian random variable with mean 0 and variance 1. More... | |
static UInt_t | integer (UInt_t max, TRandom *generator=randomGenerator()) |
Return an integer uniformly distributed from [0,n-1]. More... | |
static Bool_t | quasi (UInt_t dimension, Double_t vector[], RooQuasiRandomGenerator *generator=quasiGenerator()) |
Return a quasi-random number in the range (0,1) using the Niederreiter base 2 generator described in Bratley, Fox, Niederreiter, ACM Trans. More... | |
static RooQuasiRandomGenerator * | quasiGenerator () |
Return a pointer to a singleton quasi-random generator implementation. More... | |
static TRandom * | randomGenerator () |
Return a pointer to a singleton random-number generator implementation. More... | |
static void | setRandomGenerator (TRandom *gen) |
set the random number generator; takes ownership of the object passed as parameter More... | |
static Double_t | uniform (TRandom *generator=randomGenerator()) |
Return a number uniformly distributed from (0,1) More... | |
static void | uniform (UInt_t dimension, Double_t vector[], TRandom *generator=randomGenerator()) |
Fill the vector provided with random numbers uniformly distributed from (0,1) More... | |
Private Member Functions | |
RooRandom () | |
Static Private Attributes | |
static TRandom * | _theGenerator = 0 |
static RooQuasiRandomGenerator * | _theQuasiGenerator = 0 |
static struct Guard | guard |
Friends | |
struct | RooRandom::Guard |
#include <RooRandom.h>
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inlinevirtual |
Definition at line 27 of file RooRandom.h.
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private |
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static |
Return a Gaussian random variable with mean 0 and variance 1.
Definition at line 111 of file RooRandom.cxx.
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static |
Return an integer uniformly distributed from [0,n-1].
Definition at line 102 of file RooRandom.cxx.
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Return a quasi-random number in the range (0,1) using the Niederreiter base 2 generator described in Bratley, Fox, Niederreiter, ACM Trans.
Model. Comp. Sim. 2, 195 (1992).
Definition at line 122 of file RooRandom.cxx.
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Return a pointer to a singleton quasi-random generator implementation.
Creates the object the first time it is called.
Definition at line 74 of file RooRandom.cxx.
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static |
Return a pointer to a singleton random-number generator implementation.
Creates the object the first time it is called.
Definition at line 54 of file RooRandom.cxx.
set the random number generator; takes ownership of the object passed as parameter
Definition at line 64 of file RooRandom.cxx.
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static |
Return a number uniformly distributed from (0,1)
Definition at line 84 of file RooRandom.cxx.
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Fill the vector provided with random numbers uniformly distributed from (0,1)
Definition at line 93 of file RooRandom.cxx.
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friend |
Definition at line 49 of file RooRandom.h.
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staticprivate |
Definition at line 43 of file RooRandom.h.
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staticprivate |
Definition at line 44 of file RooRandom.h.
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staticprivate |
Definition at line 48 of file RooRandom.h.