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1 | // Copyright (c) 2015 Boost.Test team |
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 | //[example_code | |
9 | #define BOOST_TEST_MODULE tolerance_03 | |
10 | #include <boost/test/included/unit_test.hpp> | |
11 | namespace utf = boost::unit_test; | |
12 | ||
13 | double x = 10.000000; | |
14 | double d = 0.000001; | |
15 | ||
16 | BOOST_AUTO_TEST_CASE(passing, * utf::tolerance(0.0001)) | |
17 | { | |
18 | BOOST_TEST(x == x + d); // equal with tolerance | |
19 | BOOST_TEST(x >= x + d); // ==> greater-or-equal | |
20 | ||
21 | BOOST_TEST(d == .0); // small with tolerance | |
22 | } | |
23 | ||
24 | BOOST_AUTO_TEST_CASE(failing, * utf::tolerance(0.0001)) | |
25 | { | |
26 | BOOST_TEST(x - d < x); // less, but still too close | |
27 | BOOST_TEST(x - d != x); // unequal but too close | |
28 | ||
29 | BOOST_TEST(d > .0); // positive, but too small | |
30 | BOOST_TEST(d < .0); // not sufficiently negative | |
31 | } | |
32 | //] |