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[wpimath] Increase constexpr support in geometry data types (#4231)

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This uses std::is_constant_evaluated() to conditionally use the gcem library for constexpr calculations.
This commit is contained in:
David K Turner
2022-10-31 11:17:00 -05:00
committed by GitHub
parent 1c3c86e9f1
commit 3a5a376465
94 changed files with 6919 additions and 212 deletions
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21
wpimath/src/test/native/cpp/geometry/Translation3dTest.cpp
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@@ -126,3 +126,24 @@ TEST(Translation3dTest, PolarConstructor) {
EXPECT_NEAR(two.Y().value(), std::sqrt(3.0), kEpsilon);
EXPECT_NEAR(two.Z().value(), 0.0, kEpsilon);
}
TEST(Translation3dTest, Constexpr) {
constexpr Translation3d defaultCtor;
constexpr Translation3d componentCtor{1_m, 2_m, 3_m};
constexpr auto added = defaultCtor + componentCtor;
constexpr auto subtracted = defaultCtor - componentCtor;
constexpr auto negated = -componentCtor;
constexpr auto multiplied = componentCtor * 2;
constexpr auto divided = componentCtor / 2;
constexpr Translation2d projected = componentCtor.ToTranslation2d();
static_assert(defaultCtor.X() == 0_m);
static_assert(componentCtor.Y() == 2_m);
static_assert(added.Z() == 3_m);
static_assert(subtracted.X() == (-1_m));
static_assert(negated.Y() == (-2_m));
static_assert(multiplied.Z() == 6_m);
static_assert(divided.Y() == 1_m);
static_assert(projected.X() == 1_m);
static_assert(projected.Y() == 2_m);
}