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fix: Added constraints for quantity_values

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Mateusz Pusz
2021-01-04 19:37:38 +01:00
parent 76437a7752
commit 3e66ea93b9
1 changed files with 16 additions and 4 deletions
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20
src/include/units/customization_points.h
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@@ -22,6 +22,7 @@
#pragma once
#include <units/bits/external/hacks.h>
#include <limits>
#include <type_traits>
@@ -54,10 +55,21 @@ inline constexpr bool treat_as_floating_point<T> = treat_as_floating_point<typen
*/
template<typename Rep>
struct quantity_values {
static constexpr Rep zero() noexcept { return Rep(0); }
static constexpr Rep one() noexcept { return Rep(1); }
static constexpr Rep min() noexcept { return std::numeric_limits<Rep>::lowest(); }
static constexpr Rep max() noexcept { return std::numeric_limits<Rep>::max(); }
static constexpr Rep zero() noexcept
requires std::constructible_from<Rep, int>
{ return Rep(0); }
static constexpr Rep one() noexcept
requires std::constructible_from<Rep, int>
{ return Rep(1); }
static constexpr Rep min() noexcept
requires requires { { std::numeric_limits<Rep>::lowest() } -> std::same_as<Rep>; }
{ return std::numeric_limits<Rep>::lowest(); }
static constexpr Rep max() noexcept
requires requires { { std::numeric_limits<Rep>::max() } -> std::same_as<Rep>; }
{ return std::numeric_limits<Rep>::max(); }
};
/**