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feat: quantity_point does not take a default origin anymore + common_qs logic removed from the binary operators

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Mateusz Pusz
2023-08-23 10:41:37 +02:00
parent d8b687d6a9
commit 71981172c3
8 changed files with 775 additions and 877 deletions
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example/currency.cpp
+6 -3
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@@ -33,6 +33,8 @@ inline constexpr struct dim_currency : base_dimension<"$"> {} dim_currency;
QUANTITY_SPEC(currency, dim_currency);
constexpr struct zero : absolute_point_origin<currency> {} zero;
inline constexpr struct euro : named_unit<"EUR", kind_of<currency>> {} euro;
inline constexpr struct us_dollar : named_unit<"USD", kind_of<currency>> {} us_dollar;
inline constexpr struct great_british_pound : named_unit<"GBP", kind_of<currency>> {} great_british_pound;
@@ -41,6 +43,7 @@ inline constexpr struct japanese_jen : named_unit<"JPY", kind_of<currency>> {} j
static_assert(!std::equality_comparable_with<quantity<euro, int>, quantity<us_dollar, int>>);
#if 0
// if you have only a few currencies to handle
@@ -78,13 +81,13 @@ quantity<To, Rep> exchange_to(quantity<From, Rep> q)
template<ReferenceOf<currency> auto To, ReferenceOf<currency> auto From, auto PO, typename Rep>
quantity_point<To, PO, Rep> exchange_to(quantity_point<From, PO, Rep> q)
{
return quantity_point{static_cast<Rep>(exchange_rate<q.unit, get_unit(To)>() * q.absolute().number()) * To};
return quantity_point{zero + static_cast<Rep>(exchange_rate<q.unit, get_unit(To)>() * q.absolute().number()) * To};
}
int main()
{
auto price_usd = quantity_point{100 * us_dollar};
auto price_euro = quantity_point{exchange_to<euro>(price_usd)};
quantity_point price_usd = zero + 100 * us_dollar;
quantity_point price_euro = exchange_to<euro>(price_usd);
std::cout << price_usd.absolute() << " -> " << price_euro.absolute() << "\n";
// std::cout << price_usd.absolute() + price_euro.absolute() << "\n"; // does not compile