/*
Texel - A UCI chess engine.
Copyright (C) 2013-2014 Peter Österlund, peterosterlund2@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 3 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/>.
*/
/*
* timeUtil.cpp
*
* Created on: Sep 20, 2013
* Author: petero
*/
#include "timeUtil.hpp"
#include <chrono>
#include <iostream>
#ifdef HAS_RT
#include <time.h>
#include <sys/time.h>
#endif
S64 currentTimeMillis() {
#ifdef HAS_RT
clockid_t c = CLOCK_MONOTONIC;
timespec sp;
clock_gettime(c, &sp);
return (S64)(sp.tv_sec * 1e3 + sp.tv_nsec * 1e-6);
#else
auto t = std::chrono::high_resolution_clock::now();
auto t0 = t.time_since_epoch();
auto x = t0.count();
using T0Type = decltype(t0);
auto n = T0Type::period::num;
auto d = T0Type::period::den;
return (S64)(x * (1000.0 * n / d));
#endif
}
double currentTime() {
#ifdef HAS_RT
clockid_t c = CLOCK_MONOTONIC;
timespec sp;
clock_gettime(c, &sp);
return sp.tv_sec + sp.tv_nsec * 1e-9;
#else
auto t = std::chrono::high_resolution_clock::now();
auto t0 = t.time_since_epoch();
double x = (double)t0.count(); // Pierre-Marie Baty -- added type cast
using T0Type = decltype(t0);
double n = T0Type::period::num;
double d = T0Type::period::den;
return x * n / d;
#endif
}
SampleStatistics&
SampleStatistics::operator+=(const SampleStatistics& other) {
nSamples += other.nSamples;
sum += other.sum;
sqSum += other.sqSum;
return *this;
}