From 60d5980a41e3c96f801604bc781b7879fcbece42 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Fri, 22 Jul 2016 15:46:23 +0200
Subject: add a note

---
 test/boostmultiprec.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'test/boostmultiprec.cpp')

diff --git a/test/boostmultiprec.cpp b/test/boostmultiprec.cpp
index 3e16aeabd..b4d0decff 100644
--- a/test/boostmultiprec.cpp
+++ b/test/boostmultiprec.cpp
@@ -72,6 +72,7 @@ namespace Eigen {
   template<>
   Real test_precision<Real>() { return 1e-50; }
 
+  // needed in C++93 mode where number does not support explicit cast.
   namespace internal {
     template<typename NewType>
     struct cast_impl<Real,NewType>
-- 
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