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feat!: 💥 dimensionless quantities refactored

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Dimensionless quantities are now represented by quantity types rather
than by plain representation types. Only dimensionless quantities with
`unitless` unit are implicitly convertible from representation types.

`units::exp()` now is a function doing std::exp() on a representation
type (previous `units::exp` class template was renamed to
`units::exponent`).

BREAKING_CHANGE: gcc-9.3 support removed
BREAKING_CHANGE: `exp` and `Exp` renamed to `exponent` and `Exponent`
Resolves #27
Resolves #42
This commit is contained in:
Mateusz Pusz
2020-09-08 11:02:16 +02:00
parent c8b60b80c1
commit 563b358d5e
47 changed files with 599 additions and 422 deletions
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test/unit_test/runtime/fmt_test.cpp
+70 -4
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@@ -421,6 +421,72 @@ TEST_CASE("operator<< on a quantity", "[text][ostream][fmt]")
}
}
SECTION("dimensionless quantity")
{
SECTION("unitless with ratio == 1")
{
const auto q = 4q_m / 2q_m;
os << q;
SECTION("iostream")
{
CHECK(os.str() == "2");
}
SECTION("fmt with default format {} on a quantity")
{
CHECK(fmt::format("{}", q) == os.str());
}
SECTION("fmt with format {:%Q %q} on a quantity")
{
CHECK(fmt::format("{:%Q %q}", q) == "2 ");
}
}
SECTION("unitless with ratio.exp != 0")
{
const auto q = 4q_km / 2q_m;
os << q;
SECTION("iostream")
{
CHECK(os.str() == "2 × 10³");
}
SECTION("fmt with default format {} on a quantity")
{
CHECK(fmt::format("{}", q) == os.str());
}
SECTION("fmt with format {:%Q %q} on a quantity")
{
CHECK(fmt::format("{:%Q %q}", q) == "2 × 10³");
}
}
SECTION("percents")
{
const auto q = quantity_cast<percent>(15.q_m / 100.q_m);
os << q;
SECTION("iostream")
{
CHECK(os.str() == "15 %");
}
SECTION("fmt with default format {} on a quantity")
{
CHECK(fmt::format("{}", q) == os.str());
}
SECTION("fmt with format {:%Q %q} on a quantity")
{
CHECK(fmt::format("{:%Q %q}", q) == os.str());
}
}
}
SECTION("quantity with an unkown dimension")
{
SECTION("unit::ratio::num == 1 && unit::ratio::den == 1")
@@ -573,7 +639,7 @@ TEST_CASE("operator<< on a quantity", "[text][ostream][fmt]")
}
}
SECTION("exp::num == 1 && exp::den == 1")
SECTION("exponent::num == 1 && exponent::den == 1")
{
const auto q = 4q_m * 2q_s;
os << q;
@@ -594,7 +660,7 @@ TEST_CASE("operator<< on a quantity", "[text][ostream][fmt]")
}
}
SECTION("exp::num == 2 && exp::den == 1 for positive exponent")
SECTION("exponent::num == 2 && exponent::den == 1 for positive exponent")
{
const auto q = 4q_m * 2q_s * 2q_s;
os << q;
@@ -615,7 +681,7 @@ TEST_CASE("operator<< on a quantity", "[text][ostream][fmt]")
}
}
SECTION("exp::num == 2 && exp::den == 1 for negative exponent (first dimension)")
SECTION("exponent::num == 2 && exponent::den == 1 for negative exponent (first dimension)")
{
const auto q = 8q_s / 2q_m / 2q_m;
os << q;
@@ -636,7 +702,7 @@ TEST_CASE("operator<< on a quantity", "[text][ostream][fmt]")
}
}
SECTION("exp::num == 2 && exp::den == 1 for negative exponent (not first dimension)")
SECTION("exponent::num == 2 && exponent::den == 1 for negative exponent (not first dimension)")
{
const auto q = 8q_m / 2q_kg / 2q_kg;
os << q;