1 // (C) Copyright Gennadiy Rozental 2011-2015. 2 // Distributed under the Boost Software License, Version 1.0. 3 // (See accompanying file LICENSE_1_0.txt or copy at 4 // http://www.boost.org/LICENSE_1_0.txt) 5 6 // See http://www.boost.org/libs/test for the library home page. 7 8 9 //[example_code 10 #define BOOST_TEST_MODULE example 11 #include <boost/test/included/unit_test.hpp> 12 #include <boost/test/tools/floating_point_comparison.hpp> 13 BOOST_AUTO_TEST_CASE(test)14BOOST_AUTO_TEST_CASE( test ) 15 { 16 double v1 = 1.23456e-10; 17 double v2 = 1.23457e-10; 18 19 BOOST_CHECK_CLOSE( v1, v2, 0.0001 ); 20 // Absolute value of difference between these two values is 1e-15. They seems 21 // to be very close. But we want to checks that these values differ no more then 0.0001% 22 // of their value. And this test will fail at tolerance supplied. 23 } 24 //] 25