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-rw-r--r--Eigen/src/IterativeLinearSolvers/BasicPreconditioners.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/Eigen/src/IterativeLinearSolvers/BasicPreconditioners.h b/Eigen/src/IterativeLinearSolvers/BasicPreconditioners.h
index b8b7641a5..c9fe9c618 100644
--- a/Eigen/src/IterativeLinearSolvers/BasicPreconditioners.h
+++ b/Eigen/src/IterativeLinearSolvers/BasicPreconditioners.h
@@ -25,6 +25,8 @@
#ifndef EIGEN_BASIC_PRECONDITIONERS_H
#define EIGEN_BASIC_PRECONDITIONERS_H
+namespace Eigen {
+
/** \ingroup IterativeLinearSolvers_Module
* \brief A preconditioner based on the digonal entries
*
@@ -156,4 +158,6 @@ class IdentityPreconditioner
inline const Rhs& solve(const Rhs& b) const { return b; }
};
+} // end namespace Eigen
+
#endif // EIGEN_BASIC_PRECONDITIONERS_H