1 ///////////////////////////////////////////////////////////////
2 // Copyright Christopher Kormanyos 2002 - 2011.
3 // Copyright 2011 John Maddock. Distributed under the Boost
4 // Software License, Version 1.0. (See accompanying file
5 // LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt
7 // This work is based on an earlier work:
8 // "Algorithm 910: A Portable C++ Multiple-Precision System for Special-Function Calculations",
9 // in ACM TOMS, {VOL 37, ISSUE 4, (February 2011)} (C) ACM, 2011. http://doi.acm.org/10.1145/1916461.1916469
12 //#include <boost/math/special_functions/log1p.hpp>
13 //#include <boost/math/special_functions/expm1.hpp>
14 #define BOOST_TEST_MAIN
15 #include <boost/test/unit_test.hpp>
16 #include <boost/test/floating_point_comparison.hpp>
17 #include <boost/math/special_functions/math_fwd.hpp>
19 #include "table_type.hpp"
21 #include "libs/math/test/log1p_expm1_test.hpp"
27 // This file tests the functions log1p and expm1. The accuracy tests
28 // use values generated with NTL::RR at 1000-bit precision
29 // and our generic versions of these functions.
31 // Note that when this file is first run on a new platform many of
32 // these tests will fail: the default accuracy is 1 epsilon which
33 // is too tight for most platforms. In this situation you will
34 // need to cast a human eye over the error rates reported and make
35 // a judgement as to whether they are acceptable. Either way please
36 // report the results to the Boost mailing list. Acceptable rates of
37 // error are marked up below as a series of regular expressions that
38 // identify the compiler/stdlib/platform/data-type/test-data/test-function
39 // along with the maximum expected peek and RMS mean errors for that
43 void expected_results()
46 // Define the max and mean errors expected for
47 // various compilers and platforms.
51 // Catch all cases come last:
57 ".*gmp_float<18>.*", // test type(s)
58 ".*", // test data group
59 ".*", // test function
60 500, // Max Peek error
61 100); // Max mean error
66 ".*mpfr_float_backend<18>.*", // test type(s)
67 ".*", // test data group
68 ".*", // test function
69 500, // Max Peek error
70 100); // Max mean error
76 ".*", // test data group
77 ".*", // test function
82 // Finish off by printing out the compiler/stdlib/platform names,
83 // we do this to make it easier to mark up expected error rates.
85 std::cout << "Tests run with " << BOOST_COMPILER << ", "
86 << BOOST_STDLIB << ", " << BOOST_PLATFORM << std::endl;
89 BOOST_AUTO_TEST_CASE(test_main)
91 using namespace boost::multiprecision;
95 // 18 decimal digits: tests 80-bit long double approximations
96 // 30 decimal digits: tests 128-bit long double approximations
97 // 35 decimal digits: tests arbitrary precision code