1 files changed, 4 insertions, 2 deletions
diff --git a/unsupported/Eigen/src/IterativeSolvers/Scaling.h b/unsupported/Eigen/src/IterativeSolvers/Scaling.h
index 4fd439202..d113e6e90 100644
--- a/unsupported/Eigen/src/IterativeSolvers/Scaling.h
+++ b/unsupported/Eigen/src/IterativeSolvers/Scaling.h
@@ -9,6 +9,9 @@
 
 #ifndef EIGEN_ITERSCALING_H
 #define EIGEN_ITERSCALING_H
+
+namespace Eigen {
+
 /**
   * \ingroup IterativeSolvers_Module
   * \brief iterative scaling algorithm to equilibrate rows and column norms in matrices
@@ -41,8 +44,6 @@
   * 
   * \sa \ref IncompleteLUT 
   */
-namespace Eigen {
-using std::abs; 
 template<typename _MatrixType>
 class IterScaling
 {
@@ -71,6 +72,7 @@ class IterScaling
      */
     void compute (const MatrixType& mat)
     {
+      using std::abs;
       int m = mat.rows(); 
       int n = mat.cols();
       eigen_assert((m>0 && m == n) && "Please give a non - empty matrix");