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-rw-r--r--test/diagonal.cpp7
1 files changed, 7 insertions, 0 deletions
diff --git a/test/diagonal.cpp b/test/diagonal.cpp
index 53814a588..ee00cad55 100644
--- a/test/diagonal.cpp
+++ b/test/diagonal.cpp
@@ -20,6 +20,8 @@ template<typename MatrixType> void diagonal(const MatrixType& m)
MatrixType m1 = MatrixType::Random(rows, cols),
m2 = MatrixType::Random(rows, cols);
+ Scalar s1 = internal::random<Scalar>();
+
//check diagonal()
VERIFY_IS_APPROX(m1.diagonal(), m1.transpose().diagonal());
m2.diagonal() = 2 * m1.diagonal();
@@ -58,6 +60,11 @@ template<typename MatrixType> void diagonal(const MatrixType& m)
VERIFY_IS_APPROX(m2.template diagonal<N2>(), static_cast<Scalar>(2) * m1.diagonal(N2));
m2.diagonal(N2)[0] *= 3;
VERIFY_IS_APPROX(m2.diagonal(N2)[0], static_cast<Scalar>(6) * m1.diagonal(N2)[0]);
+
+ m2.diagonal(N2).x() = s1;
+ VERIFY_IS_APPROX(m2.diagonal(N2).x(), s1);
+ m2.diagonal(N2).coeffRef(0) = Scalar(2)*s1;
+ VERIFY_IS_APPROX(m2.diagonal(N2).coeff(0), Scalar(2)*s1);
}
}