How do i calculate the millisecond difference from the following Ptime ,I am using boost::ptime I'm trying to calculate the time_duration in milliseconds to find the difference. i get value like 999975 but expected value is 975
ptime PreviousgpsTime = Mon Jun 28 17:07:10.054 2021 ptime NextgpsTime = Mon Jun 28 17:07:11.025 2021
double totalDiff = (NextgpsTime-PreviousgpsTime).total_milliseconds();
How to fix this and get the actual time duration.
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#include <boost/date_time/posix_time/posix_time.hpp>
int main()
{
using namespace boost::posix_time;
ptime PreviousgpsTime = time_from_string("2021-Jun-28 17:07:10.054");
ptime NextgpsTime = time_from_string("2021-Jun-28 17:07:11.025");
long totalDiff = (NextgpsTime - PreviousgpsTime).total_milliseconds();
std::cout << "From " << PreviousgpsTime << " to " << NextgpsTime << " is " << totalDiff << "ms\n";
}
Prints
From 2021-Jun-28 17:07:10.054000 to 2021-Jun-28 17:07:11.025000 is 971ms