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How to generate random 64-bit accelerated ints

I am trying to create a random 64-bit unsigned integer using boost random, but I am getting an assertion error using uniform_int.

struct timeval tv;
boost::mt19937 randGen(tval.tv_usec);
boost::uniform_int<> uInt64Dist(0, std::numeric_limits<uint64_t>::max());
boost::variate_generator<boost::mt19937&, boost::uniform_int<> > getRand(randGen, uInt64Dist);
uint64_t clock_seq_= getRand();

This is what appears on line 3.

main:/usr/include/boost/random/uniform_int.hpp:48: boost::uniform_int<IntType>::uniform_int(IntType, IntType) [with IntType = int]: Assertion `min_arg <= max_arg' failed.

EDIT: based on your answers, I tried to specify the size below:

boost:uniform_int<uint64_t> ....

But I get the following compilation error:

spec.cpp: In member function ‘void Specifier::initialize()’:
spec.cpp:58: error: no matching function for call to ‘boost::variate_generator<boost::mt19937&, boost::uniform_int<int> >::variate_generator(boost::mt19937&, boost::uniform_int<long unsigned int>&)’
/usr/include/boost/random/variate_generator.hpp:97: note: candidates are: boost::variate_generator<Engine, Distribution>::variate_generator(Engine, Distribution) [with Engine = boost::mt19937&, Distribution = boost::uniform_int<int>]
/usr/include/boost/random/variate_generator.hpp:87: note:                 boost::variate_generator<boost::mt19937&, boost::uniform_int<int> >::variate_generator(const boost::variate_generator<boost::mt19937&, boost::uniform_int<int> >&)
make: *** [spec.o] Error 1

EDIT: ok, skipped the second instance of boost :: uniform_int. As soon as I got them both, everything goes.

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2 answers

uniform_intused by default intas a value type. Use the following instead:

boost::uniform_int<uint64_t> ...

The same applies to the following line:

boost::variate_generator<boost::mt19937&, boost::uniform_int<uint64_t> > ...
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boost::uniform_int<>, 64- . 32- .

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