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Add C++20 std::math constants shim (#1788)

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Based on http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0631r7.pdf
This commit is contained in:
Tyler Veness
2019-07-31 22:15:22 -07:00
committed by Peter Johnson
parent dd43109596
commit 37d316aa09
11 changed files with 119 additions and 50 deletions
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13
wpilibc/src/test/native/cpp/geometry/Rotation2dTest.cpp
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@@ -7,17 +7,18 @@
#include <cmath>
#include <wpi/math>
#include "frc/geometry/Rotation2d.h"
#include "gtest/gtest.h"
using namespace frc;
static constexpr double kEpsilon = 1E-9;
static constexpr double kPi = 3.14159265358979323846;
TEST(Rotation2dTest, RadiansToDegrees) {
const Rotation2d one{kPi / 3};
const Rotation2d two{kPi / 4};
const Rotation2d one{wpi::math::pi / 3};
const Rotation2d two{wpi::math::pi / 4};
EXPECT_NEAR(one.Degrees(), 60.0, kEpsilon);
EXPECT_NEAR(two.Degrees(), 45.0, kEpsilon);
@@ -27,15 +28,15 @@ TEST(Rotation2dTest, DegreesToRadians) {
const auto one = Rotation2d::FromDegrees(45.0);
const auto two = Rotation2d::FromDegrees(30.0);
EXPECT_NEAR(one.Radians(), kPi / 4.0, kEpsilon);
EXPECT_NEAR(two.Radians(), kPi / 6.0, kEpsilon);
EXPECT_NEAR(one.Radians(), wpi::math::pi / 4.0, kEpsilon);
EXPECT_NEAR(two.Radians(), wpi::math::pi / 6.0, kEpsilon);
}
TEST(Rotation2dTest, RotateByFromZero) {
const Rotation2d zero;
auto sum = zero + Rotation2d::FromDegrees(90.0);
EXPECT_NEAR(sum.Radians(), kPi / 2.0, kEpsilon);
EXPECT_NEAR(sum.Radians(), wpi::math::pi / 2.0, kEpsilon);
EXPECT_NEAR(sum.Degrees(), 90.0, kEpsilon);
}