template<typename CBRNG>
class r123::MicroURNG< CBRNG >
Given a CBRNG whose ctr_type has an unsigned integral value_type,
MicroURNG<CBRNG>(c, k) is a type that satisfies the
requirements of a C++0x Uniform Random Number Generator.
The intended purpose is for a MicroURNG to be passed
as an argument to a C++0x Distribution, e.g.,
std::normal_distribution. See examples/MicroURNG.cpp.
The MicroURNG functor has a period of "only"
ctr_type.size()*2^32,
after which it will silently repeat.
The high 32 bits of the highest word in the counter c, passed to
the constructor must be zero. MicroURNG uses these bits to
"count".
Older versions of the library permitted a second template
parameter by which the caller could control the number of
bits devoted to the URNG's internal counter. This flexibility
has been disabled because URNGs created with different
numbers of counter bits could, conceivably "collide".
typedef ?someCBRNG? RNG;
RNG::ctr_type c = ...;
RNG::key_type k = ...;
std::normal_distribution<float> nd;
MicroURNG<RNG> urng(c, k);
for(???){
...
nd(urng);
...
}
1.8.5
