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bug #1223: fix compilation of AutoDiffScalar's min/max operators, and add regression unit test.

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This commit is contained in:
Gael Guennebaud
2016-05-18 16:26:26 +02:00
parent 448d9d943c
commit 1fbfab27a9
2 changed files with 35 additions and 4 deletions
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19
unsupported/test/autodiff.cpp
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@@ -216,6 +216,24 @@ double bug_1222() {
return denom.value();
}
double bug_1223() {
using std::min;
typedef Eigen::AutoDiffScalar<Eigen::Vector3d> AD;
const double _cv1_3 = 1.0;
const AD chi_3 = 1.0;
const AD denom = 1.0;
// failed because implementation of min attempts to construct ADS<DerType&> via constructor AutoDiffScalar(const Real& value)
// without initializing m_derivatives (which is a reference in this case)
#define EIGEN_TEST_SPACE
const AD t = min EIGEN_TEST_SPACE (denom / chi_3, 1.0);
const AD t2 = min EIGEN_TEST_SPACE (denom / (chi_3 * _cv1_3), 1.0);
return t.value() + t2.value();
}
void test_autodiff()
{
for(int i = 0; i < g_repeat; i++) {
@@ -226,5 +244,6 @@ void test_autodiff()
}
bug_1222();
bug_1223();
}