in rand48::operator () [...]\linear_congruential.hpp(218) : warning C4244: 'return' : conversion from 'boost::uint64_t' to 'boost::int32_t', possible loss of data Patch attached. Stefan RCS file: /cvsroot/boost/boost/boost/random/linear_congruential.hpp,v retrieving revision 1.18 diff -u -r1.18 linear_congruential.hpp --- linear_congruential.hpp 27 Jul 2004 03:43:32 -0000 1.18 +++ linear_congruential.hpp 28 Jul 2004 15:09:10 -0000 @@ -215,7 +215,7 @@ void seed(uint64_t x0) { lcf.seed(x0); } template<class It> void seed(It& first, It last) { lcf.seed(first,last); } - int32_t operator()() { return lcf() >> 17; } + int32_t operator()() { return static_cast<int32_t>(lcf() >> 17); } // by experiment from lrand48() static bool validation(int32_t x) { return x == 1993516219; }