121 lines
3.4 KiB
C++
121 lines
3.4 KiB
C++
#pragma once
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// Fix for limits.h not exposing LLONG_MIN, LLONG_MIN, and ULLONG_MAX to C++ context
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#ifdef __cplusplus
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#define __STDC_VERSION__ 201112L
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#endif
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#include <limits.h>
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namespace uart {
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namespace util {
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template <typename...>
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struct always_false {
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static constexpr auto value = false;
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};
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template <typename... Ts>
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static constexpr auto always_false_v = always_false<Ts...>::value;
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// clang-format off
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template <typename T>
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struct NumericLimits {
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static constexpr T min() { return T(); }
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static constexpr T max() { return T(); }
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};
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template <>
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struct NumericLimits<bool> {
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static constexpr bool min() { return false; }
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static constexpr bool max() { return true; }
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};
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template <>
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struct NumericLimits<char> {
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static constexpr char min() { return CHAR_MIN; }
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static constexpr char max() { return CHAR_MAX; }
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};
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template <>
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struct NumericLimits<signed char> {
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static constexpr signed char min() { return SCHAR_MIN; }
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static constexpr signed char max() { return SCHAR_MAX; }
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};
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template <>
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struct NumericLimits<unsigned char> {
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static constexpr unsigned char min() { return 0; }
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static constexpr unsigned char max() { return UCHAR_MAX; }
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};
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template <>
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struct NumericLimits<short> {
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static constexpr short min() { return SHRT_MIN; }
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static constexpr short max() { return SHRT_MAX; }
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};
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template <>
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struct NumericLimits<int> {
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static constexpr int min() { return INT_MIN; }
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static constexpr int max() { return INT_MAX; }
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};
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template <>
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struct NumericLimits<long> {
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static constexpr long int min() { return LONG_MIN; }
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static constexpr long int max() { return LONG_MAX; }
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};
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template <>
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struct NumericLimits<long long int> {
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static constexpr long long int min() { return LLONG_MIN; }
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static constexpr long long int max() { return LLONG_MAX; }
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};
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template <>
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struct NumericLimits<unsigned short> {
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static constexpr unsigned short min() { return 0; }
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static constexpr unsigned short max() { return USHRT_MAX; }
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};
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template <>
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struct NumericLimits<unsigned int> {
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static constexpr unsigned int min() { return 0; }
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static constexpr unsigned int max() { return UINT_MAX; }
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};
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template <>
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struct NumericLimits<unsigned long int> {
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static constexpr unsigned long int min() { return 0; }
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static constexpr unsigned long int max() { return ULONG_MAX; }
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};
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template <>
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struct NumericLimits<unsigned long long int> {
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static constexpr unsigned long long int min() { return 0; }
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static constexpr unsigned long long int max() { return ULLONG_MAX; }
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};
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template <>
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struct NumericLimits<float> {
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template <typename... Ts> static constexpr float min() { static_assert(always_false_v<Ts...>, "Not implemented"); return 0; }
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template <typename... Ts> static constexpr float max() { static_assert(always_false_v<Ts...>, "Not implemented"); return 0; }
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};
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template <>
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struct NumericLimits<double> {
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template <typename... Ts> static constexpr double min() { static_assert(always_false_v<Ts...>, "Not implemented"); return 0; }
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template <typename... Ts> static constexpr double max() { static_assert(always_false_v<Ts...>, "Not implemented"); return 0; }
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};
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template <>
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struct NumericLimits<long double> {
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template <typename... Ts> static constexpr long double min() { static_assert(always_false_v<Ts...>, "Not implemented"); return 0; }
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template <typename... Ts> static constexpr long double max() { static_assert(always_false_v<Ts...>, "Not implemented"); return 0; }
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};
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// clang-format on
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} // namespace util
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} // namespace uart
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