1 // Boost.Units - A C++ library for zero-overhead dimensional analysis and
2 // unit/quantity manipulation and conversion
4 // Copyright (C) 2009 Steven Watanabe
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)
16 Test trigonometric functions.
24 #include <boost/units/cmath.hpp>
25 #include <boost/units/systems/si/plane_angle.hpp>
26 #include <boost/units/systems/si/length.hpp>
27 #include <boost/units/systems/si/dimensionless.hpp>
28 #include <boost/units/systems/angle/degrees.hpp>
30 #define BOOST_TEST_MAIN
31 #include <boost/test/unit_test.hpp>
33 using boost::units::si::radians;
34 using boost::units::si::si_dimensionless;
35 using boost::units::degree::degrees;
36 BOOST_UNITS_STATIC_CONSTANT(degree_dimensionless, boost::units::degree::dimensionless);
37 using boost::units::si::meters;
38 BOOST_UNITS_STATIC_CONSTANT(heterogeneous_dimensionless, boost::units::reduce_unit<boost::units::si::dimensionless>::type);
40 BOOST_AUTO_TEST_CASE(test_sin) {
41 BOOST_CHECK_EQUAL(boost::units::sin(2.0 * radians), std::sin(2.0) * si_dimensionless);
42 BOOST_CHECK_CLOSE_FRACTION(static_cast<double>(boost::units::sin(15.0 * degrees)), 0.2588, 0.0004);
45 BOOST_AUTO_TEST_CASE(test_cos) {
46 BOOST_CHECK_EQUAL(boost::units::cos(2.0 * radians), std::cos(2.0) * si_dimensionless);
47 BOOST_CHECK_CLOSE_FRACTION(static_cast<double>(boost::units::cos(75.0 * degrees)), 0.2588, 0.0004);
50 BOOST_AUTO_TEST_CASE(test_tan) {
51 BOOST_CHECK_EQUAL(boost::units::tan(2.0 * radians), std::tan(2.0) * si_dimensionless);
52 BOOST_CHECK_CLOSE_FRACTION(static_cast<double>(boost::units::tan(45.0 * degrees)), 1.0, 0.0001);
55 BOOST_AUTO_TEST_CASE(test_asin) {
56 BOOST_CHECK_EQUAL(boost::units::asin(0.2 * si_dimensionless), std::asin(0.2) * radians);
57 BOOST_CHECK_CLOSE_FRACTION(boost::units::asin(0.5 * degree_dimensionless).value(), 30.0, 0.0001);
58 BOOST_CHECK_EQUAL(boost::units::asin(0.2 * heterogeneous_dimensionless).value(), std::asin(0.2));
61 BOOST_AUTO_TEST_CASE(test_acos) {
62 BOOST_CHECK_EQUAL(boost::units::acos(0.2 * si_dimensionless), std::acos(0.2) * radians);
63 BOOST_CHECK_CLOSE_FRACTION(boost::units::acos(0.5 * degree_dimensionless).value(), 60.0, 0.0001);
64 BOOST_CHECK_EQUAL(boost::units::acos(0.2 * heterogeneous_dimensionless).value(), std::acos(0.2));
67 BOOST_AUTO_TEST_CASE(test_atan) {
68 BOOST_CHECK_EQUAL(boost::units::atan(0.2 * si_dimensionless), std::atan(0.2) * radians);
69 BOOST_CHECK_CLOSE_FRACTION(boost::units::atan(1.0 * degree_dimensionless).value(), 45.0, 0.0001);
70 BOOST_CHECK_EQUAL(boost::units::atan(0.2 * heterogeneous_dimensionless).value(), std::atan(0.2));
73 BOOST_AUTO_TEST_CASE(test_atan2) {
74 BOOST_CHECK_EQUAL(boost::units::atan2(0.2 * si_dimensionless, 0.3 * si_dimensionless), std::atan2(0.2, 0.3) * radians);
75 BOOST_CHECK_EQUAL(boost::units::atan2(0.2 * meters, 0.3 * meters), std::atan2(0.2, 0.3) * radians);
76 BOOST_CHECK_CLOSE_FRACTION(boost::units::atan2(0.8660*degree_dimensionless,0.5*degree_dimensionless).value(), 60., 0.0002);
77 BOOST_CHECK_EQUAL(boost::units::atan2(0.2 * heterogeneous_dimensionless, 0.3 * heterogeneous_dimensionless).value(), std::atan2(0.2, 0.3));