c++ - How to calculate the time difference in microseconds between two timestamps using the Boost library -

c++ - How to calculate the time difference in microseconds between two timestamps using the Boost library -

update: code compiles properly

i calculate time difference between 2 timestamps. resolution of import must in microseconds/milliseconds.

i tried next result not meaningful:

boost::posix_time::ptime before = (&input[0])->timestamp; boost::posix_time::ptime = boost::posix_time::microsec_clock::local_time(); boost::posix_time::time_period tp (before, now); std::string str (boost::posix_time::to_simple_string (tp)); cout << str.c_str() << endl;

the result following:

[2014-jun-20 12:26:07.711182/2014-jun-20 12:26:07.711596]

how can next instead?

76 μs

you can use

std::cout << (now - before).total_microseconds() << " µs\n"; std::cout << (now - before).total_milliseconds() << " ms\n";

this want (printing e.g. 76 µs or 314 ms)

c++ boost time