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author | Geoffrey Lalonde <lalondegeoffrey@gmail.com> | 2016-06-15 23:33:19 -0700 |
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committer | Geoffrey Lalonde <lalondegeoffrey@gmail.com> | 2016-06-15 23:33:19 -0700 |
commit | 72c95383e03ea86d6a154faa7ec684d7f4d1e750 (patch) | |
tree | cbd943554a09ec50c34e496ec1241f0ffe16b540 /unsupported/test/autodiff_scalar.cpp | |
parent | d7e3e4bb0407718d27cb62c6409dfaf0ea0986d1 (diff) |
Add autodiff coverage for standard library hyperbolic functions, and tests.
* * *
Corrected tanh derivatived, moved test definitions.
* * *
Added more test cases, removed lingering lines
Diffstat (limited to 'unsupported/test/autodiff_scalar.cpp')
-rw-r--r-- | unsupported/test/autodiff_scalar.cpp | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/unsupported/test/autodiff_scalar.cpp b/unsupported/test/autodiff_scalar.cpp index c631c734a..4df2f5c57 100644 --- a/unsupported/test/autodiff_scalar.cpp +++ b/unsupported/test/autodiff_scalar.cpp @@ -36,13 +36,48 @@ template<typename Scalar> void check_atan2() VERIFY_IS_APPROX(res.derivatives(), x.derivatives()); } +template<typename Scalar> void check_hyperbolic_functions() +{ + using std::sinh; + using std::cosh; + using std::tanh; + typedef Matrix<Scalar, 1, 1> Deriv1; + typedef AutoDiffScalar<Deriv1> AD; + Deriv1 p = Deriv1::Random(); + AD val(p.x(),Deriv1::UnitX()); + + Scalar cosh_px = std::cosh(p.x()); + AD res1 = tanh(val); + VERIFY_IS_APPROX(res1.value(), std::tanh(p.x())); + VERIFY_IS_APPROX(res1.derivatives().x(), Scalar(1.0) / (cosh_px * cosh_px)); + AD res2 = sinh(val); + VERIFY_IS_APPROX(res2.value(), std::sinh(p.x())); + VERIFY_IS_APPROX(res2.derivatives().x(), cosh_px); + AD res3 = cosh(val); + VERIFY_IS_APPROX(res3.value(), cosh_px); + VERIFY_IS_APPROX(res3.derivatives().x(), std::sinh(p.x())); + + // Check constant values. + const Scalar sample_point = Scalar(1) / Scalar(3); + val = AD(sample_point,Deriv1::UnitX()); + res1 = tanh(val); + VERIFY_IS_APPROX(res1.derivatives().x(), Scalar(0.896629559604914)); + + res2 = sinh(val); + VERIFY_IS_APPROX(res2.derivatives().x(), Scalar(1.056071867829939)); + + res3 = cosh(val); + VERIFY_IS_APPROX(res3.derivatives().x(), Scalar(0.339540557256150)); +} void test_autodiff_scalar() { for(int i = 0; i < g_repeat; i++) { CALL_SUBTEST_1( check_atan2<float>() ); CALL_SUBTEST_2( check_atan2<double>() ); + CALL_SUBTEST_3( check_hyperbolic_functions<float>() ); + CALL_SUBTEST_4( check_hyperbolic_functions<double>() ); } } |