diff --git a/tvmet-1.7.1/testsuite/compare.h b/tvmet-1.7.1/testsuite/compare.h
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+++ b/tvmet-1.7.1/testsuite/compare.h
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+/* This file is part of Eigen, a C++ template library for linear algebra
+ * Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: SelfTest.cc,v 1.1 2004/04/24 11:55:15 opetzold Exp $
+ */
+ 
+/* This file is mostly a duplication of util/Fuzzy.h, but with 1000 times
+ * bigger epsilon. This prevents false positives in tests.
+ */
+
+#ifndef EIGEN_TESTSUITE_COMPARE_H
+#define EIGEN_TESTSUITE_COMPARE_H
+
+#include <QtTest/QtTest>
+
+#include <cstdlib>
+#include <cmath>
+#include <complex>
+
+#include <tvmet/Traits.h>
+
+template<typename T> inline typename tvmet::Traits<T>::real_type test_epsilon()
+{ return static_cast<typename tvmet::Traits<T>::real_type>(0); }
+template<> inline float test_epsilon<float>() { return 1e-2f; }
+template<> inline double test_epsilon<double>() { return 1e-8; }
+template<> inline float test_epsilon<std::complex<float> >() { return test_epsilon<float>(); }
+template<> inline double test_epsilon<std::complex<double> >() { return test_epsilon<double>(); }
+
+/**
+  * Short version: returns true if the absolute value of \a a is much smaller
+  * than that of \a b.
+  *
+  * Full story: returns ( abs(a) <= abs(b) * test_epsilon<T> ).
+  */
+template<typename T> bool test_isNegligible( const T& a, const T& b )
+{
+  return( tvmet::Traits<T>::abs(a)
+            <= tvmet::Traits<T>::abs(b)
+             * test_epsilon<T>() );
+}
+
+/**
+  * Short version: returns true if \a a is approximately zero.
+  *
+  * Full story: returns test_isNegligible( a, static_cast<T>(1) );
+  */
+template<typename T> bool test_isZero( const T& a )
+{
+  return test_isNegligible( a, static_cast<T>(1) );
+}
+
+/**
+  * Short version: returns true if a is very close to b, false otherwise.
+  *
+  * Full story: returns abs( a - b ) <= min( abs(a), abs(b) ) * test_epsilon<T>.
+  */
+template<typename T> bool test_isApprox( const T& a, const T& b )
+{
+  return( tvmet::Traits<T>::abs( a - b )
+          <= std::min( tvmet::Traits<T>::abs(a),
+                       tvmet::Traits<T>::abs(b) ) * test_epsilon<T>() );
+}
+
+/**
+  * Short version: returns true if a is smaller or approximately equalt to b, false otherwise.
+  *
+  * Full story: returns a <= b || test_isApprox(a, b);
+  */
+template<typename T> bool test_isLessThan( const T& a, const T& b )
+{
+  return( tvmet::Traits<T>::isLessThan_nonfuzzy(a, b) || test_isApprox(a, b) );
+}
+
+#define TEST(a)              QVERIFY(a)
+#define TEST_NEGLIGIBLE(a,b) QVERIFY(test_isNegligible(a,b))
+#define TEST_ZERO(a)         QVERIFY(test_isZero(a))
+#define TEST_APPROX(a,b)     QVERIFY(test_isApprox(a,b))
+#define TEST_LESSTHAN(a,b)   QVERIFY(test_isLessThan(a,b))
+
+#endif // EIGEN_TESTSUITE_COMPARE_H