From 99501a2c4c015a0f5a4a11d3cfbcdf1d3a39fe49 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Tue, 16 Dec 2014 16:23:47 +0100
Subject: Fix wrong negative in nullary unit test when extended precision is
 used (FPU).

---
 test/nullary.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'test/nullary.cpp')

diff --git a/test/nullary.cpp b/test/nullary.cpp
index 5408d88b2..fbc721a1a 100644
--- a/test/nullary.cpp
+++ b/test/nullary.cpp
@@ -80,7 +80,9 @@ void testVectorType(const VectorType& base)
   Matrix<Scalar,1,Dynamic> col_vector(size);
   row_vector.setLinSpaced(size,low,high);
   col_vector.setLinSpaced(size,low,high);
-  VERIFY( row_vector.isApprox(col_vector.transpose(), NumTraits<Scalar>::epsilon()));
+  // when using the extended precision (e.g., FPU) the relative error might exceed 1 bit
+  // when computing the squared sum in isApprox, thus the 2x factor.
+  VERIFY( row_vector.isApprox(col_vector.transpose(), Scalar(2)*NumTraits<Scalar>::epsilon()));
 
   Matrix<Scalar,Dynamic,1> size_changer(size+50);
   size_changer.setLinSpaced(size,low,high);
-- 
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