Guiorgy

#!/usr/bin/env bash

# Copyright 2025 Guiorgy
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the “Software”), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
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Guiorgy

// prime calculation based on https://gist.github.com/rongjiecomputer/d52f34d27a21b8c9c9e82ca85b806640
// add increase limits or it wont compile for sieveSize = 1000000 -fconstexpr-loop-limit=2000000 -fconstexpr-ops-limit=335544320
// use debug build.
// release build will optimize most of the loop away.

#include <chrono>
#include <iostream>
#include <numeric>
#include <span>
#include <stdio.h>