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diff --git a/src/common/include/gudhi/Unitary_tests_utils.h b/src/common/include/gudhi/Unitary_tests_utils.h
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+++ b/src/common/include/gudhi/Unitary_tests_utils.h
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+/*    This file is part of the Gudhi Library - https://gudhi.inria.fr/ - which is released under MIT.
+ *    See file LICENSE or go to https://gudhi.inria.fr/licensing/ for full license details.
+ *    Author(s):       Vincent Rouvreau
+ *
+ *    Copyright (C) 2017 Inria
+ *
+ *    Modification(s):
+ *      - YYYY/MM Author: Description of the modification
+ */
+#ifndef UNITARY_TESTS_UTILS_H_
+#define UNITARY_TESTS_UTILS_H_
+
+#include <boost/test/unit_test.hpp>
+
+#include <iostream>
+#include <limits>  // for std::numeric_limits<>
+
+template<typename FloatingType >
+void GUDHI_TEST_FLOAT_EQUALITY_CHECK(FloatingType a, FloatingType b,
+                                     FloatingType epsilon = std::numeric_limits<FloatingType>::epsilon()) {
+#ifdef DEBUG_TRACES
+  std::cout << "GUDHI_TEST_FLOAT_EQUALITY_CHECK - " << a << " versus " << b
+            << " | diff = " << std::fabs(a - b) << " - epsilon = " << epsilon << std::endl;
+#endif
+  BOOST_CHECK(std::fabs(a - b) <= epsilon);
+}
+
+#endif  // UNITARY_TESTS_UTILS_H_