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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 http://www.boost.org/LICENSE_1_
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 #define BOOST_TEST_MAIN
13 #include <boost/test/unit_test.hpp>
14 #include <boost/test/floating_point_comparison.hpp>
15 #include <boost/math/special_functions/math_fwd.hpp>
17 #include "table_type.hpp"
19 #include "libs/math/test/powm1_sqrtp1m1_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:
55 ".*mpfr_float_backend<18>.*", // test type(s)
56 ".*", // test data group
57 ".*", // test function
58 300, // Max Peek error
59 50); // Max mean error
65 ".*", // test data group
66 ".*", // test function
71 // Finish off by printing out the compiler/stdlib/platform names,
72 // we do this to make it easier to mark up expected error rates.
74 std::cout
<< "Tests run with " << BOOST_COMPILER
<< ", "
75 << BOOST_STDLIB
<< ", " << BOOST_PLATFORM
<< std::endl
;
79 void test(T t
, const char* p
)
81 test_powm1_sqrtp1m1(t
, p
);
84 BOOST_AUTO_TEST_CASE( test_main
)
86 using namespace boost::multiprecision
;
89 // We test two different precisions:
90 // 18 decimal digits triggers Boost.Math's 64-bit long double support.
91 // 30 decimal digits triggers Boost.Math's 128-bit long double support.
92 // 35 decimal digits triggers true arbitrary precision support.