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refactor!: require explicit number for references

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Addresses:
- https://github.com/mpusz/units/pull/261#discussion_r596651065
- https://github.com/mpusz/units/pull/261#discussion_r596664550
- https://github.com/mpusz/units/pull/261#discussion_r597132294
This commit is contained in:
Johel Ernesto Guerrero Peña authored and Mateusz Pusz committed 2021-03-18 22:37:25 +01:00
1 parent 6d9abe97e5
commit 0b87e7c99c
8 files changed
+80 -83
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test/unit_test/static/unit_constants.cpp
+11 -10
View File
@@ -55,41 +55,42 @@ concept invalid_operations = requires {
requires !requires { s - s; };
requires !requires { s + 1_q_s; };
requires !requires { s - 1_q_s; };
requires !requires { s * 1_q_s; };
requires !requires { s / 1_q_s; };
requires !requires { 1_q_s + s; };
requires !requires { 1_q_s - s; };
requires !requires { 1_q_s * s; };
requires !requires { 1_q_s / s; };
};
static_assert(invalid_operations<s>);
static_assert(2_q_m / s == 2_q_m_per_s);
static_assert(2 * m / s == 2_q_m_per_s);
static_assert(2 / s * m == 2_q_m_per_s);
static_assert(2_q_m / (1 * s) == 2_q_m_per_s);
static_assert(2 * (m / s) == 2_q_m_per_s);
static_assert(2 / (s / m) == 2_q_m_per_s);
#if !(UNITS_COMP_GCC == 10 && UNITS_COMP_GCC_MINOR == 1)
#if !(UNITS_COMP_GCC == 10 && UNITS_COMP_GCC_MINOR == 1) // GCC 10.1.0 ICEs
constexpr auto m_per_s = m / s;
static_assert(2 * ::m_per_s == 2_q_m_per_s);
#endif
static_assert(120 * km / (2 * h) == 60_q_km_per_h);
static_assert(120 * km / 2 / h == 60_q_km_per_h);
static_assert([] {
const auto length{120};
const auto duration{2};
return length * km / (duration * h);
}() == 60_q_km_per_h);
static_assert(is_same_v<decltype(std::int64_t{120} * km / (2 * h)), decltype(60_q_km_per_h)>);
static_assert(is_same_v<decltype(std::int64_t{120} * km / 2 / h), decltype(60_q_km_per_h)>);
static_assert(is_same_v<decltype(120.L * km / 2 / h), decltype(60._q_km_per_h)>);
static_assert(is_same_v<decltype(120.L * km / (2 * h)), decltype(60._q_km_per_h)>);
static_assert(1. / 4 * m2 == 1._q_m2 / 4);
UNITS_DIAGNOSTIC_PUSH
UNITS_DIAGNOSTIC_IGNORE_SHADOW
constexpr bool test_hiding() {
Speed auto v0 = 10 * m / s;
signed s = 2; // hides ^
Speed auto v0 = 10 * (m / s);
signed s = 2; // hides ^
Length auto v = 20 * m / s;
/* */ v0 = 10 * m / ::s;
/* */ v0 = 10 * (m / ::s);
return !is_same_v<decltype(v0), decltype(v)>;
}