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bug #1222: fix compilation in AutoDiffScalar and add respective unit test

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(grafted from 448d9d943c3996f6d74cebad457865d005248ddd
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This commit is contained in:
Gael Guennebaud 2016-05-18 16:00:11 +02:00
parent 51f763eaba
commit 17c40e5524
1 changed files with 11 additions and 0 deletions
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11
unsupported/test/autodiff.cpp
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@ -162,6 +162,15 @@ void test_autodiff_jacobian()
CALL_SUBTEST(( forward_jacobian(TestFunc1<double>(3,3)) ));
}
double bug_1222() {
typedef Eigen::AutoDiffScalar<Eigen::Vector3d> AD;
const double _cv1_3 = 1.0;
const AD chi_3 = 1.0;
// this line did not work, because operator+ returns ADS<DerType&>, which then cannot be converted to ADS<DerType>
const AD denom = chi_3 + _cv1_3;
return denom.value();
}
void test_autodiff()
{
for(int i = 0; i < g_repeat; i++) {
@ -169,5 +178,7 @@ void test_autodiff()
CALL_SUBTEST_2( test_autodiff_vector() );
CALL_SUBTEST_3( test_autodiff_jacobian() );
}
bug_1222();
}