A lot of the constructors of ptime deals with getting the current system time or time structures.  I have a double with the seconds and fractional microseconds from midnight January 1, 1970.  What is the best way to create a ptime object from this double?

#include #include namespace pt = boost::posix_time; int main() { double d = 1000.1; double sec; double mksec = std::modf(d, &sec); pt::ptime t = pt::from_time_t(static_cast<int>(sec)) + pt::microseconds(static_cast<int>(mksec)); }