main.cpp
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#include "crucible/boot.hpp"
#include "crucible/core.hpp"
#include <chrono>
#include <cmath>
#include <iostream>
#include <string>
namespace crucible::boot::main
{
constexpr std::size_t BENCHMARK_ITERATIONS { 10'000'000 };
constexpr char const BULLET[] { "•" };
constexpr char const GREEN[] { "\x1b[0;32m" };
constexpr char const MAGENTA[] { "\x1b[0;35m" };
constexpr char const BRIGHT[] { "\x1b[1m" };
constexpr char const RESET[] { "\x1b[0m" };
[[nodiscard]] auto replicate(std::string const &pattern, std::size_t const amount) -> std::string
{
std::string result {};
for (std::size_t i { 0 }; i < amount; ++i) {
result += pattern;
}
return result;
}
auto benchmark_core_math() -> void
{
{
float value { 0.0f };
float const delta { 0.000001f };
[[maybe_unused]] float volatile storage { 0.0f };
auto const t0 { std::chrono::steady_clock::now() };
for (std::size_t i { 0 }; i < BENCHMARK_ITERATIONS; ++i) {
storage = core::math::square_root(value);
value += delta;
}
auto const t1 { std::chrono::steady_clock::now() };
auto const ms = std::chrono::duration_cast<std::chrono::milliseconds>(t1 - t0).count();
std::cout << BULLET << " " << MAGENTA << "crucible::core::math::square_root<float>()" << RESET << ": " << GREEN << BENCHMARK_ITERATIONS << RESET << " iterations; " << GREEN << ms << RESET << "ms\n";
}
{
float value { 0.0f };
float const delta { 0.000001f };
[[maybe_unused]] float volatile storage { 0.0f };
auto const t0 { std::chrono::steady_clock::now() };
for (std::size_t i { 0 }; i < BENCHMARK_ITERATIONS; ++i) {
storage = std::sqrt(value);
value += delta;
}
auto const t1 { std::chrono::steady_clock::now() };
auto const ms = std::chrono::duration_cast<std::chrono::milliseconds>(t1 - t0).count();
std::cout << BULLET << " " << MAGENTA << "std::sqrt()" << RESET << ": " << GREEN << BENCHMARK_ITERATIONS << RESET << " iterations; " << GREEN << ms << RESET << "ms\n";
}
}
auto launch(core::arrays::ImmutableSlice<std::string> const arguments) -> ExitStatus
{
static_cast<void>(arguments);
std::string const full_header { "crucible-benchmark v" CRUCIBLE_VERSION };
std::size_t const space_required { full_header.size() + 2 };
std::string const horizontal_bars { replicate("─", space_required) };
std::cout
<< "\n"
<< BRIGHT << "╭" << horizontal_bars << "╮\n" << RESET
<< BRIGHT << "│ " << full_header << " │\n" << RESET
<< BRIGHT << "╰" << horizontal_bars << "╯\n" << RESET
<< "\n"
<< BRIGHT << "Benchmarks\n" << RESET
<< BRIGHT << "──────────\n" << RESET
<< "\n";
benchmark_core_math();
return ExitStatus::Success;
}
}