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 | #include "test_close.hpp" |
32 | |
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); |
39 | |
40 | void test_sin() { |
41 | BOOST_TEST_EQ(boost::units::sin(2.0 * radians), std::sin(2.0) * si_dimensionless); |
42 | BOOST_UNITS_TEST_CLOSE(static_cast<double>(boost::units::sin(15.0 * degrees)), 0.2588, 0.0004); |
43 | } |
44 | |
45 | void test_cos() { |
46 | BOOST_TEST_EQ(boost::units::cos(2.0 * radians), std::cos(2.0) * si_dimensionless); |
47 | BOOST_UNITS_TEST_CLOSE(static_cast<double>(boost::units::cos(75.0 * degrees)), 0.2588, 0.0004); |
48 | } |
49 | |
50 | void test_tan() { |
51 | BOOST_TEST_EQ(boost::units::tan(2.0 * radians), std::tan(2.0) * si_dimensionless); |
52 | BOOST_UNITS_TEST_CLOSE(static_cast<double>(boost::units::tan(45.0 * degrees)), 1.0, 0.0001); |
53 | } |
54 | |
55 | void test_asin() { |
56 | BOOST_TEST_EQ(boost::units::asin(0.2 * si_dimensionless), std::asin(0.2) * radians); |
57 | BOOST_UNITS_TEST_CLOSE(boost::units::asin(0.5 * degree_dimensionless).value(), 30.0, 0.0001); |
58 | BOOST_TEST_EQ(boost::units::asin(0.2 * heterogeneous_dimensionless).value(), std::asin(0.2)); |
59 | } |
60 | |
61 | void test_acos() { |
62 | BOOST_TEST_EQ(boost::units::acos(0.2 * si_dimensionless), std::acos(0.2) * radians); |
63 | BOOST_UNITS_TEST_CLOSE(boost::units::acos(0.5 * degree_dimensionless).value(), 60.0, 0.0001); |
64 | BOOST_TEST_EQ(boost::units::acos(0.2 * heterogeneous_dimensionless).value(), std::acos(0.2)); |
65 | } |
66 | |
67 | void test_atan() { |
68 | BOOST_TEST_EQ(boost::units::atan(0.2 * si_dimensionless), std::atan(0.2) * radians); |
69 | BOOST_UNITS_TEST_CLOSE(boost::units::atan(1.0 * degree_dimensionless).value(), 45.0, 0.0001); |
70 | BOOST_TEST_EQ(boost::units::atan(0.2 * heterogeneous_dimensionless).value(), std::atan(0.2)); |
71 | } |
72 | |
73 | void test_atan2() { |
74 | BOOST_TEST_EQ(boost::units::atan2(0.2 * si_dimensionless, 0.3 * si_dimensionless), std::atan2(0.2, 0.3) * radians); |
75 | BOOST_TEST_EQ(boost::units::atan2(0.2 * meters, 0.3 * meters), std::atan2(0.2, 0.3) * radians); |
76 | BOOST_UNITS_TEST_CLOSE(boost::units::atan2(0.8660*degree_dimensionless,0.5*degree_dimensionless).value(), 60., 0.0002); |
77 | BOOST_TEST_EQ(boost::units::atan2(0.2 * heterogeneous_dimensionless, 0.3 * heterogeneous_dimensionless).value(), std::atan2(0.2, 0.3)); |
78 | } |
79 | |
80 | int main() |
81 | { |
82 | test_sin(); |
83 | test_cos(); |
84 | test_tan(); |
85 | test_asin(); |
86 | test_acos(); |
87 | test_atan(); |
88 | test_atan2(); |
89 | return boost::report_errors(); |
90 | } |
91 | |