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feat: full-on dimensional analysis between related quantity kinds

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This commit is contained in:
Johel Ernesto Guerrero Peña
2021-02-21 00:17:03 +01:00
committed by Mateusz Pusz
parent dad9b4f166
commit 017183653d
11 changed files with 295 additions and 49 deletions
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test/unit_test/static/quantity_test.cpp
+16 -6
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@@ -278,9 +278,10 @@ static_assert((1_q_m += 1_q_m).count() == 2);
static_assert((2_q_m -= 1_q_m).count() == 1);
static_assert((1_q_m *= 2).count() == 2);
static_assert((2_q_m /= 2).count() == 1);
static_assert((7_q_m %= 2).count() == 1);
static_assert((1_q_m *= quantity(2)).count() == 2);
static_assert((2_q_m /= quantity(2)).count() == 1);
static_assert((7_q_m %= 2).count() == 1);
static_assert((7_q_m %= quantity(2)).count() == 1);
static_assert((7_q_m %= 2_q_m).count() == 1);
// different types
@@ -295,8 +296,10 @@ static_assert((7.5_q_m /= quantity(3)).count() == 2.5);
static_assert((3500_q_m %= 1_q_km).count() == 500);
static_assert((std::uint8_t(255) * m %= 256).count() == [] { std::uint8_t ui(255); return ui %= 256; }());
static_assert((std::uint8_t(255) * m %= quantity(256)).count() == [] { std::uint8_t ui(255); return ui %= 256; }());
// static_assert((std::uint8_t(255) * m %= 256 * m).count() != [] { std::uint8_t ui(255); return ui %= 256; }()); // UB
static_assert((std::uint8_t(255) * m %= 257).count() == [] { std::uint8_t ui(255); return ui %= 257; }());
static_assert((std::uint8_t(255) * m %= quantity(257)).count() == [] { std::uint8_t ui(255); return ui %= 257; }());
// TODO: Fix
static_assert((std::uint8_t(255) * m %= 257 * m).count() != [] { std::uint8_t ui(255); return ui %= 257; }());
@@ -309,14 +312,21 @@ static_assert((22_q_m *= quantity(33.33)).count() == 733);
static_assert((22_q_m /= quantity(3.33)).count() == 6);
#endif
template<typename Metre>
template<typename Metre, typename Kilometre>
concept invalid_compound_assignments = requires() {
// truncating not allowed
requires !requires(length<Metre, int> l) { l += 2.5_q_m; };
requires !requires(length<Metre, int> l) { l -= 2.5_q_m; };
requires !requires(length<kilometre, int> l) { l += length<Metre, int>(2); };
requires !requires(length<kilometre, int> l) { l -= length<Metre, int>(2); };
requires !requires(length<kilometre, int> l) { l %= length<Metre, int>(2); };
requires !requires(length<Kilometre, int> l) { l += length<Metre, int>(2); };
requires !requires(length<Kilometre, int> l) { l -= length<Metre, int>(2); };
requires !requires(length<Kilometre, int> l) { l %= length<Metre, int>(2); };
requires !requires(length<Kilometre, int> l) { l %= dimensionless<percent, int>(2); };
requires !requires(length<Kilometre, int> l) { l %= dimensionless<percent, double>(2); };
// TODO: accept non-truncating argument
requires !requires(length<Kilometre, int> l) { l *= 1 * km / m; };
requires !requires(length<Kilometre, int> l) { l /= 1 * km / m; };
requires !requires(length<Kilometre, int> l) { l %= 1 * km / m; };
// only quantities can be added or subtracted
requires !requires(length<Metre, int> l) { l += 2; };
@@ -333,7 +343,7 @@ concept invalid_compound_assignments = requires() {
requires !requires(length<Metre, double> l) { l %= 2_q_m; };
requires !requires(length<Metre, int> l) { l %= 2._q_m; };
};
static_assert(invalid_compound_assignments<metre>);
static_assert(invalid_compound_assignments<metre, kilometre>);
////////////////////