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/* Requires Thread Building Blocks (libtbb-dev on Debian) */
#include <algorithm>
#include <cstdlib>
#include <ctime>
#include <execution>
#include <iostream>
int a[ARRAYSIZE];
int main(void) {
srand(time(NULL));
for (auto &x : a) x = rand() % 1000000000;
struct timespec begin;
clock_gettime(CLOCK_MONOTONIC, &begin);
std::sort(std::execution::par, a, a+ARRAYSIZE,
[](const int &x, const int &y) { return x < y; });
struct timespec end;
clock_gettime(CLOCK_MONOTONIC, &end);
double time = end.tv_sec - begin.tv_sec +
(end.tv_nsec - begin.tv_nsec) / 1000000000.0;
std::cout << "(" << a[ARRAYSIZE/2] << ") C++ time for " << ARRAYSIZE
<< " numbers (parallel): " << time << "s\n";
}
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