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1 | // Copyright John Maddock 2006. |
2 | // Copyright Paul A. Bristow 2007. | |
3 | ||
4 | // Use, modification and distribution are subject to the | |
5 | // Boost Software License, Version 1.0. | |
6 | // (See accompanying file LICENSE_1_0.txt | |
7 | // or copy at http://www.boost.org/LICENSE_1_0.txt) | |
8 | ||
9 | // test_dist_overloads.cpp | |
10 | ||
11 | #include <boost/math/concepts/real_concept.hpp> // for real_concept | |
12 | #include <boost/math/distributions/normal.hpp> | |
13 | using boost::math::normal_distribution; | |
14 | ||
15 | #define BOOST_TEST_MAIN | |
16 | #include <boost/test/unit_test.hpp> // Boost.Test | |
17 | #include <boost/test/floating_point_comparison.hpp> | |
18 | ||
19 | #include <iostream> | |
20 | using std::cout; | |
21 | using std::endl; | |
22 | using std::setprecision; | |
23 | ||
24 | template <class RealType> | |
25 | void test_spots(RealType) | |
26 | { | |
27 | // Basic sanity checks, | |
28 | // 2 eps as a percentage: | |
29 | RealType tolerance = boost::math::tools::epsilon<RealType>() * 2 * 100; | |
30 | ||
31 | cout << "Tolerance for type " << typeid(RealType).name() << " is " << tolerance << " %" << endl; | |
32 | ||
33 | for(int i = -4; i <= 4; ++i) | |
34 | { | |
35 | BOOST_CHECK_CLOSE( | |
36 | ::boost::math::cdf(normal_distribution<RealType>(), i), | |
37 | ::boost::math::cdf(normal_distribution<RealType>(), static_cast<RealType>(i)), | |
38 | tolerance); | |
39 | BOOST_CHECK_CLOSE( | |
40 | ::boost::math::pdf(normal_distribution<RealType>(), i), | |
41 | ::boost::math::pdf(normal_distribution<RealType>(), static_cast<RealType>(i)), | |
42 | tolerance); | |
43 | BOOST_CHECK_CLOSE( | |
44 | ::boost::math::cdf(complement(normal_distribution<RealType>(), i)), | |
45 | ::boost::math::cdf(complement(normal_distribution<RealType>(), static_cast<RealType>(i))), | |
46 | tolerance); | |
47 | BOOST_CHECK_CLOSE( | |
48 | ::boost::math::hazard(normal_distribution<RealType>(), i), | |
49 | ::boost::math::hazard(normal_distribution<RealType>(), static_cast<RealType>(i)), | |
50 | tolerance); | |
51 | BOOST_CHECK_CLOSE( | |
52 | ::boost::math::chf(normal_distribution<RealType>(), i), | |
53 | ::boost::math::chf(normal_distribution<RealType>(), static_cast<RealType>(i)), | |
54 | tolerance); | |
55 | } | |
56 | for(float f = 0.01f; f < 1; f += 0.01f) | |
57 | { | |
58 | BOOST_CHECK_CLOSE( | |
59 | ::boost::math::quantile(normal_distribution<RealType>(), f), | |
60 | ::boost::math::quantile(normal_distribution<RealType>(), static_cast<RealType>(f)), | |
61 | tolerance); | |
62 | BOOST_CHECK_CLOSE( | |
63 | ::boost::math::quantile(complement(normal_distribution<RealType>(), f)), | |
64 | ::boost::math::quantile(complement(normal_distribution<RealType>(), static_cast<RealType>(f))), | |
65 | tolerance); | |
66 | } | |
67 | } // template <class RealType>void test_spots(RealType) | |
68 | ||
69 | BOOST_AUTO_TEST_CASE( test_main ) | |
70 | { | |
71 | // Basic sanity-check spot values. | |
72 | // (Parameter value, arbitrarily zero, only communicates the floating point type). | |
73 | test_spots(0.0F); // Test float. OK at decdigits = 0 tolerance = 0.0001 % | |
74 | test_spots(0.0); // Test double. OK at decdigits 7, tolerance = 1e07 % | |
75 | #ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS | |
76 | test_spots(0.0L); // Test long double. | |
77 | #if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x582)) | |
78 | test_spots(boost::math::concepts::real_concept(0.)); // Test real concept. | |
79 | #endif | |
80 | #else | |
81 | std::cout << "<note>The long double tests have been disabled on this platform " | |
82 | "either because the long double overloads of the usual math functions are " | |
83 | "not available at all, or because they are too inaccurate for these tests " | |
84 | "to pass.</note>" << std::endl; | |
85 | #endif | |
86 | ||
87 | } // BOOST_AUTO_TEST_CASE( test_main ) | |
88 | ||
89 | /* | |
90 | ||
91 | Output: | |
92 | ||
93 | Running 1 test case... | |
94 | Tolerance for type float is 2.38419e-005 % | |
95 | Tolerance for type double is 4.44089e-014 % | |
96 | Tolerance for type long double is 4.44089e-014 % | |
97 | Tolerance for type class boost::math::concepts::real_concept is 4.44089e-014 % | |
98 | *** No errors detected | |
99 | ||
100 | */ | |
101 |