Quickly benchmark C++ runtimes

/*
* vector.h
*
*  Created on: 6 окт. 2018 г.
*      Author: disba1ancer
*/

#ifndef VEC_H_
#define VEC_H_


namespace dse::math {

template <typename value_t, std::size_t size>
struct vec;

namespace impl {

template <typename value_t>
concept no_cvref =

!std::is_reference_v<value_t> &&

!std::is_const_v<std::remove_reference_t<value_t>> &&

!std::is_volatile_v<std::remove_reference_t<value_t>>;

template <typename value_t>
concept ref_or_val =

std::is_lvalue_reference_v<value_t> ||

no_cvref<value_t>;

template <typename>
constexpr bool is_vector = false;

template <typename type_t, std::size_t size>
constexpr bool is_vector<vec<type_t, size>> = true;

template <typename type_t>
concept scalar_type = !is_vector<std::remove_cv_t<type_t>>;

constexpr auto character_to_index(char ch) -> std::size_t {

return (ch - 'x') & 3;
}

} // namespace impl

template <typename value_t, std::size_t size>
requires(

!std::is_const_v<value_t> &&

!std::is_volatile_v<value_t> &&

!std::is_reference_v<value_t> &&

size…