Hello, I'm trying to use the boost::timer library, but I can't get to 'format' function to work : it always prints zero values. I followed the documentation : http://www.boost.org/doc/libs/1_48_0/libs/timer/doc/cpu_timers.html#Default-... Here is my code : { boost::timer::cpu_timer cput; someFunctionTakingTime(); std::cout<