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This version can integrate correctly for ~200 days. But there is a memory leak now. Also, the implicit method is not exactly correct, a -> PaP^{-1}. However, it is stable without this fix.- Loading branch information
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| Original file line number | Diff line number | Diff line change |
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| // C/C++ | ||
| #include <algorithm> | ||
| #include <cmath> | ||
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| // external | ||
| #include <gtest/gtest.h> | ||
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| // athena | ||
| #include <athena/athena.hpp> | ||
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| // exo3 | ||
| #include <exo3/cubed_sphere_utility.hpp> | ||
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| namespace cs = CubedSphereUtility; | ||
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| TEST(CovariantToContravariant, test1) { | ||
| Real w[5] = {1., 2., 3., 4., 5.}; | ||
| Real cth = 0.5; | ||
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| cs::CovariantToContravariant(w, cth); | ||
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| EXPECT_DOUBLE_EQ(w[0], 1.); | ||
| EXPECT_DOUBLE_EQ(w[1], 2.); | ||
| EXPECT_DOUBLE_EQ(w[2], 4./3.); | ||
| EXPECT_DOUBLE_EQ(w[3], 10./3.); | ||
| EXPECT_DOUBLE_EQ(w[4], 5.); | ||
| } | ||
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| TEST(ContravariantToOrthogonal, test1) { | ||
| Real w[5] = {1., 2., 3., 4., 5.}; | ||
| Real y[5] = {1., 2., 3., 4., 5.}; | ||
| Real cth = 0.5; | ||
| Real sth = sqrt(1. - cth * cth); | ||
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| cs::ContravariantToCovariant(y, cth); | ||
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| Real ek1 = w[IVX] * y[IVX] + w[IVY] * y[IVY] + w[IVZ] * y[IVZ]; | ||
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| w[IVY] += w[IVZ] * cth; | ||
| w[IVZ] *= sth; | ||
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| Real ek2 = w[IVX] * w[IVX] + w[IVY] * w[IVY] + w[IVZ] * w[IVZ]; | ||
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| EXPECT_DOUBLE_EQ(w[0], 1.); | ||
| EXPECT_DOUBLE_EQ(w[1], 2.); | ||
| EXPECT_DOUBLE_EQ(w[2], 5); | ||
| EXPECT_DOUBLE_EQ(w[3], sqrt(12)); | ||
| EXPECT_DOUBLE_EQ(w[4], 5.); | ||
| EXPECT_DOUBLE_EQ(ek1, ek2); | ||
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| w[IVZ] /= sth; | ||
| w[IVY] -= w[IVZ] * cth; | ||
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| EXPECT_DOUBLE_EQ(w[0], 1.); | ||
| EXPECT_DOUBLE_EQ(w[1], 2.); | ||
| EXPECT_DOUBLE_EQ(w[2], 3.); | ||
| EXPECT_DOUBLE_EQ(w[3], 4.); | ||
| EXPECT_DOUBLE_EQ(w[4], 5.); | ||
| } | ||
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| TEST(ContravariantToCovariant, test1) { | ||
| Real w[5] = {1., 2., 4./3., 10./3., 5.}; | ||
| Real cth = 0.5; | ||
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| cs::ContravariantToCovariant(w, cth); | ||
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| EXPECT_DOUBLE_EQ(w[0], 1.); | ||
| EXPECT_DOUBLE_EQ(w[1], 2.); | ||
| EXPECT_DOUBLE_EQ(w[2], 3.); | ||
| EXPECT_DOUBLE_EQ(w[3], 4.); | ||
| EXPECT_DOUBLE_EQ(w[4], 5.); | ||
| } | ||
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| int main(int argc, char **argv) { | ||
| testing::InitGoogleTest(&argc, argv); | ||
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| int result = RUN_ALL_TESTS(); | ||
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| return result; | ||
| } |