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git.proxmox.com Git - ceph.git/blob - ceph/src/boost/libs/math/test/log1p_expm1_test.cpp
1 // Copyright John Maddock 2005.
2 // Copyright Paul A. Bristow 2010
3 // Use, modification and distribution are subject to the
4 // Boost Software License, Version 1.0. (See accompanying file
5 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
7 #include <pch_light.hpp>
9 // Requires MS extensions permitted or fails to link.
12 #define BOOST_MATH_OVERFLOW_ERROR_POLICY ignore_error
14 #include <boost/math/concepts/real_concept.hpp>
15 #define BOOST_TEST_MAIN
16 #include <boost/test/unit_test.hpp>
17 #include <boost/test/tools/floating_point_comparison.hpp>
18 #include <boost/math/special_functions/math_fwd.hpp>
19 #include "log1p_expm1_test.hpp"
25 // This file tests the functions log1p and expm1. The accuracy tests
26 // use values generated with NTL::RR at 1000-bit precision
27 // and our generic versions of these functions.
29 // Note that when this file is first run on a new platform many of
30 // these tests will fail: the default accuracy is 1 epsilon which
31 // is too tight for most platforms. In this situation you will
32 // need to cast a human eye over the error rates reported and make
33 // a judgement as to whether they are acceptable. Either way please
34 // report the results to the Boost mailing list. Acceptable rates of
35 // error are marked up below as a series of regular expressions that
36 // identify the compiler/stdlib/platform/data-type/test-data/test-function
37 // along with the maximum expected peek and RMS mean errors for that
41 void expected_results()
44 // Define the max and mean errors expected for
45 // various compilers and platforms.
49 // Catch all cases come last:
56 ".*", // test data group
57 ".*", // test function
62 // Finish off by printing out the compiler/stdlib/platform names,
63 // we do this to make it easier to mark up expected error rates.
65 std::cout
<< "Tests run with " << BOOST_COMPILER
<< ", "
66 << BOOST_STDLIB
<< ", " << BOOST_PLATFORM
<< std::endl
;
70 BOOST_AUTO_TEST_CASE( test_main
)
73 BOOST_MATH_CONTROL_FP
;
74 test(float(0), "float");
75 test(double(0), "double");
77 // The long double version of these tests fails on some platforms
78 // due to poor std lib support (not enough digits returned from
79 // std::log and std::exp):
81 #if !defined(BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS)
82 test((long double)(0), "long double");
83 #ifndef BOOST_MATH_NO_REAL_CONCEPT_TESTS
84 test((boost::math::concepts::real_concept
)(0), "real_concept");
87 std::cout
<< "<note>The long double tests have been disabled on this platform "
88 "either because the long double overloads of the usual math functions are "
89 "not available at all, or because they are too inaccurate for these tests "
90 "to pass.</note>" << std::endl
;