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/*******************************************************************************
* Copyright (C) 2015 Johan Ouwerkerk <jm.ouwerkerk@gmail.com> *
* *
* This program is free software: you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the Free *
* Software Foundation, either version 2 of the License, or (at your option) *
* any later version. *
* *
* This program is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for *
* more details. *
* *
* You should have received a copy of the GNU General Public License along *
* with this program. If not, see <http://www.gnu.org/licenses/>. *
*******************************************************************************/
#include <iostream>
#include <ratio>
#include <chrono>
#include <cstdint>
/*
* Test case to check:
* - if std::ratio is present and includes predefined ratios (std::milli).
* - if std::chrono::duration is present and includes predefined durations (std::chrono::microseconds)
* - if std::chrono::duration supports mixed type arithmetic/conversion
* - if std::chrono::duration specifically supports using double as 'representation' type.
*
* This should catch out compilers with broken std::chrono::duration support.
*/
typedef std::chrono::duration<uint64_t, std::milli> msec_t;
typedef std::chrono::duration<double> sec_t;
int main()
{
sec_t secs(3.5);
sec_t next = secs + sec_t(1.5) - sec_t(2.0);
msec_t msec(std::chrono::duration_cast<msec_t>(secs));
std::chrono::microseconds usec(std::chrono::duration_cast<std::chrono::microseconds>(msec));
bool checkNext = 3.0 == next.count();
bool checkUsec = 3500000 == usec.count();
bool checkSRep = sizeof(secs.count()) == sizeof(double);
bool checkMSRep = sizeof(msec.count()) == sizeof(uint64_t);
bool checkMsec = 3500 == msec.count();
std::cout
<< "Original duration in (s): " << secs.count() << std::endl
<< "Converted to (ms): " << msec.count() << std::endl
<< "Converted to (us): " << usec.count() << std::endl
<< "After arithmetic (+ 1.5s - 2.0s): " << next.count() << std::endl;
return (checkNext && checkUsec && checkSRep && checkMSRep && checkMsec) ? 0 : 1;
}
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