From bf91a44f4ac8b82af79fc9a302f155f8beb3ca2d Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Thu, 21 Jul 2016 15:48:24 +0200
Subject: [PATCH] Use ADL and log10 for printing matrices.

---
 Eigen/src/Core/IO.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Eigen/src/Core/IO.h b/Eigen/src/Core/IO.h
index 2198f5668..8c794837f 100644
--- a/Eigen/src/Core/IO.h
+++ b/Eigen/src/Core/IO.h
@@ -131,7 +131,9 @@ struct significant_decimals_default_impl
   typedef typename NumTraits<Scalar>::Real RealScalar;
   static inline int run()
   {
-    return cast<RealScalar,int>(numext::ceil(-numext::log(NumTraits<RealScalar>::epsilon())/numext::log(RealScalar(10))));
+    using std::ceil;
+    using std::log10;
+    return cast<RealScalar,int>(ceil(-log10(NumTraits<RealScalar>::epsilon())));
   }
 };