RandomLib::LeadingZeros Class Reference

Count of leading zeros. More...

#include <RandomLib-2010-01/LeadingZeros.hpp>

List of all members.

Public Member Functions
template<class Random >
unsigned	operator() (Random &r) const throw ()

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Detailed Description

Count of leading zeros.

Count of leading zero bits after the binary point in a real number uniformly distributed in (0,1). (This is equivalent to the geometric distribution with probability 1/2.) For example

   #include "RandomLib/LeadingZeros.hpp"

   RandomLib::Random r; // A RandomGenerator works here too
   std::cout << "Seed set to " << r.SeedString() << std::endl;
   LeadingZeros zeros;
   std::cout << "Count of leading zeros:";
   for (size_t i = 0; i < 20; ++i)
       std::cout << " " << zeros(r);
   std::cout << std::endl;

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Member Function Documentation

template<class Random >

unsigned RandomLib::LeadingZeros::operator()

(

Random &

r

)

const throw () [inline]

Return the number of zero bits after the binary point in a real number uniformly distributed in (0,1). Thus k is returned with probability 1/2^k+1. Because MT19937 is not a perfect random number generator, this always returns a result in [0, 19937).

Definition at line 45 of file LeadingZeros.hpp.

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The documentation for this class was generated from the following file:

• LeadingZeros.hpp