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-rw-r--r--unsupported/Eigen/src/NonLinearOptimization/dogleg.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/unsupported/Eigen/src/NonLinearOptimization/dogleg.h b/unsupported/Eigen/src/NonLinearOptimization/dogleg.h
index 4fbc98bfc..57dbc8bfb 100644
--- a/unsupported/Eigen/src/NonLinearOptimization/dogleg.h
+++ b/unsupported/Eigen/src/NonLinearOptimization/dogleg.h
@@ -10,6 +10,9 @@ void dogleg(
Scalar delta,
Matrix< Scalar, Dynamic, 1 > &x)
{
+ using std::abs;
+ using std::sqrt;
+
typedef DenseIndex Index;
/* Local variables */