Replace == by isApproxEqual with tolerance.

src/level_set/redistancing_Sussman/tests/help_functions_unit_test.cpp

@@ -41,7 +41,9 @@ BOOST_AUTO_TEST_SUITE(HelpFunctionsTestSuite)
 		
 		// Now we check if get_min_value returns smaller_value
 		auto min_value = get_min_val<Field>(g_dist);
-		BOOST_CHECK_MESSAGE(min_value == smaller_value, "Checking if smallest value stored in grid is returned.");
+		double tolerance = 1e-12;
+		BOOST_CHECK_MESSAGE(isApproxEqual(min_value, smaller_value, tolerance), "Checking if smallest value stored in grid "
+																		  "is returned.");
 	}
 	
 	BOOST_AUTO_TEST_CASE(get_max_val_test)
@@ -74,6 +76,9 @@ BOOST_AUTO_TEST_SUITE(HelpFunctionsTestSuite)
 		
 		// Now we check if get_max_value returns bigger_value
 		auto max_value = get_max_val<Field>(g_dist);
-		BOOST_CHECK_MESSAGE(max_value == bigger_value, "Checking if smallest value stored in grid is returned.");
+		double tolerance = 1e-12;
+		BOOST_CHECK_MESSAGE(isApproxEqual(max_value, bigger_value, tolerance), "Checking if smallest value stored in "
+																			   "grid "
+																		  "is returned.");
 	}
 BOOST_AUTO_TEST_SUITE_END()