1
0
mirror of https://github.com/TomHarte/CLK.git synced 2025-02-06 13:31:55 +00:00
CLK/Numeric/Sizes.hpp
2025-02-04 22:54:39 -05:00

45 lines
1.2 KiB
C++

//
// Sizes.hpp
// Clock Signal
//
// Created by Thomas Harte on 26/01/2021.
// Copyright © 2021 Thomas Harte. All rights reserved.
//
#pragma once
#include <cstdint>
#include <limits>
#include <type_traits>
template <int size> struct uint_t_impl;
template <> struct uint_t_impl<8> { using type = uint8_t; };
template <> struct uint_t_impl<16> { using type = uint16_t; };
template <> struct uint_t_impl<32> { using type = uint32_t; };
template <> struct uint_t_impl<64> { using type = uint64_t; };
/// Unsigned integer types templated on size; `uint_t<8> = uint8_t`; `uint_t<16> = uint16_t`, etc.
template <int size> using uint_t = typename uint_t_impl<size>::type;
/*!
Maps to the smallest integral type that can contain max_value, from the following options:
* uint8_t;
* uint16_t;
* uint32_t; or
* uint64_t.
*/
template <uint64_t max_value> struct MinIntTypeValue {
using type =
std::conditional_t<
max_value <= std::numeric_limits<uint8_t>::max(), uint8_t,
std::conditional_t<
max_value <= std::numeric_limits<uint16_t>::max(), uint16_t,
std::conditional_t<
max_value <= std::numeric_limits<uint32_t>::max(), uint32_t,
uint64_t
>
>
>;
};