1 // Boost.Units - A C++ library for zero-overhead dimensional analysis and
2 // unit/quantity manipulation and conversion
3 //
4 // Copyright (C) 2009 Steven Watanabe
5 //
6 // Distributed under the Boost Software License, Version 1.0. (See
7 // accompanying file LICENSE_1_0.txt or copy at
8 // http://www.boost.org/LICENSE_1_0.txt)
9
10 /**
11 \file
12
13 \brief test_trig.cpp
14
15 \details
16 Test trigonometric functions.
17
18 Output:
19 @verbatim
20 @endverbatim
21 **/
22
23 #include <cmath>
24 #include <boost/units/cmath.hpp>
25 #include <boost/units/io.hpp>
26 #include <boost/units/systems/si/plane_angle.hpp>
27 #include <boost/units/systems/si/length.hpp>
28 #include <boost/units/systems/si/dimensionless.hpp>
29 #include <boost/units/systems/angle/degrees.hpp>
30
31 #define BOOST_TEST_MAIN
32 #include <boost/test/unit_test.hpp>
33
34 using boost::units::si::radians;
35 using boost::units::si::si_dimensionless;
36 using boost::units::degree::degrees;
37 BOOST_UNITS_STATIC_CONSTANT(degree_dimensionless, boost::units::degree::dimensionless);
38 using boost::units::si::meters;
39 BOOST_UNITS_STATIC_CONSTANT(heterogeneous_dimensionless, boost::units::reduce_unit<boost::units::si::dimensionless>::type);
40
BOOST_AUTO_TEST_CASE(test_sin)41 BOOST_AUTO_TEST_CASE(test_sin) {
42 BOOST_CHECK_EQUAL(boost::units::sin(2.0 * radians), std::sin(2.0) * si_dimensionless);
43 BOOST_CHECK_CLOSE_FRACTION(static_cast<double>(boost::units::sin(15.0 * degrees)), 0.2588, 0.0004);
44 }
45
BOOST_AUTO_TEST_CASE(test_cos)46 BOOST_AUTO_TEST_CASE(test_cos) {
47 BOOST_CHECK_EQUAL(boost::units::cos(2.0 * radians), std::cos(2.0) * si_dimensionless);
48 BOOST_CHECK_CLOSE_FRACTION(static_cast<double>(boost::units::cos(75.0 * degrees)), 0.2588, 0.0004);
49 }
50
BOOST_AUTO_TEST_CASE(test_tan)51 BOOST_AUTO_TEST_CASE(test_tan) {
52 BOOST_CHECK_EQUAL(boost::units::tan(2.0 * radians), std::tan(2.0) * si_dimensionless);
53 BOOST_CHECK_CLOSE_FRACTION(static_cast<double>(boost::units::tan(45.0 * degrees)), 1.0, 0.0001);
54 }
55
BOOST_AUTO_TEST_CASE(test_asin)56 BOOST_AUTO_TEST_CASE(test_asin) {
57 BOOST_CHECK_EQUAL(boost::units::asin(0.2 * si_dimensionless), std::asin(0.2) * radians);
58 BOOST_CHECK_CLOSE_FRACTION(boost::units::asin(0.5 * degree_dimensionless).value(), 30.0, 0.0001);
59 BOOST_CHECK_EQUAL(boost::units::asin(0.2 * heterogeneous_dimensionless).value(), std::asin(0.2));
60 }
61
BOOST_AUTO_TEST_CASE(test_acos)62 BOOST_AUTO_TEST_CASE(test_acos) {
63 BOOST_CHECK_EQUAL(boost::units::acos(0.2 * si_dimensionless), std::acos(0.2) * radians);
64 BOOST_CHECK_CLOSE_FRACTION(boost::units::acos(0.5 * degree_dimensionless).value(), 60.0, 0.0001);
65 BOOST_CHECK_EQUAL(boost::units::acos(0.2 * heterogeneous_dimensionless).value(), std::acos(0.2));
66 }
67
BOOST_AUTO_TEST_CASE(test_atan)68 BOOST_AUTO_TEST_CASE(test_atan) {
69 BOOST_CHECK_EQUAL(boost::units::atan(0.2 * si_dimensionless), std::atan(0.2) * radians);
70 BOOST_CHECK_CLOSE_FRACTION(boost::units::atan(1.0 * degree_dimensionless).value(), 45.0, 0.0001);
71 BOOST_CHECK_EQUAL(boost::units::atan(0.2 * heterogeneous_dimensionless).value(), std::atan(0.2));
72 }
73
BOOST_AUTO_TEST_CASE(test_atan2)74 BOOST_AUTO_TEST_CASE(test_atan2) {
75 BOOST_CHECK_EQUAL(boost::units::atan2(0.2 * si_dimensionless, 0.3 * si_dimensionless), std::atan2(0.2, 0.3) * radians);
76 BOOST_CHECK_EQUAL(boost::units::atan2(0.2 * meters, 0.3 * meters), std::atan2(0.2, 0.3) * radians);
77 BOOST_CHECK_CLOSE_FRACTION(boost::units::atan2(0.8660*degree_dimensionless,0.5*degree_dimensionless).value(), 60., 0.0002);
78 BOOST_CHECK_EQUAL(boost::units::atan2(0.2 * heterogeneous_dimensionless, 0.3 * heterogeneous_dimensionless).value(), std::atan2(0.2, 0.3));
79 }
80