ceph/src/boost/libs/math/test/test_beta.cpp

   1 // Copyright John Maddock 2006.
   2 // Copyright Paul A. Bristow 2007, 2009
   3
   4 //  Use, modification and distribution are subject to the
   5 //  Boost Software License, Version 1.0. (See accompanying file
   6 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   7
   8 #include "pch_light.hpp"
   9
  10 #include "test_beta.hpp"
  11
  12 //
  13 // DESCRIPTION:
  14 // ~~~~~~~~~~~~
  15 //
  16 // This file tests the function beta.  There are two sets of tests, spot
  17 // tests which compare our results with selected values computed
  18 // using the online special function calculator at
  19 // functions.wolfram.com, while the bulk of the accuracy tests
  20 // use values generated with NTL::RR at 1000-bit precision
  21 // and our generic versions of these functions.
  22 //
  23 // Note that when this file is first run on a new platform many of
  24 // these tests will fail: the default accuracy is 1 epsilon which
  25 // is too tight for most platforms.  In this situation you will
  26 // need to cast a human eye over the error rates reported and make
  27 // a judgement as to whether they are acceptable.  Either way please
  28 // report the results to the Boost mailing list.  Acceptable rates of
  29 // error are marked up below as a series of regular expressions that
  30 // identify the compiler/stdlib/platform/data-type/test-data/test-function
  31 // along with the maximum expected peek and RMS mean errors for that
  32 // test.
  33 //
  34
  35 void expected_results()
  36 {
  37    //
  38    // Define the max and mean errors expected for
  39    // various compilers and platforms.
  40    //
  41 #if LDBL_MANT_DIG == 106
  42    // Darwin:
  43    add_expected_result(
  44       ".*",                          // compiler
  45       ".*",                          // stdlib
  46       "Mac OS.*",                    // platform
  47       "(long\\s+)?double",           // test type(s)
  48       "Beta Function: Medium.*",     // test data group
  49       "beta", 200, 35); // test function
  50 #endif
  51
  52    add_expected_result(
  53       ".*",                          // compiler
  54       ".*",                          // stdlib
  55       ".*",                          // platform
  56       "(long\\s+)?double",           // test type(s)
  57       "Beta Function: Small.*",      // test data group
  58       "beta", 8, 5);    // test function
  59    add_expected_result(
  60       ".*",                          // compiler
  61       ".*",                          // stdlib
  62       ".*",                          // platform
  63       "(long\\s+)?double",           // test type(s)
  64       "Beta Function: Medium.*",     // test data group
  65       "beta", 160, 35); // test function
  66    add_expected_result(
  67       ".*",                          // compiler
  68       ".*",                          // stdlib
  69       ".*",                          // platform
  70       "(long\\s+)?double",           // test type(s)
  71       "Beta Function: Divergent.*",  // test data group
  72       "beta", 30, 6);   // test function
  73    add_expected_result(
  74       ".*",                          // compiler
  75       ".*",                          // stdlib
  76       ".*",                          // platform
  77       "real_concept",                // test type(s)
  78       "Beta Function: Small.*",      // test data group
  79       "beta", 15, 15);   // test function
  80    add_expected_result(
  81       ".*",                          // compiler
  82       ".*",                          // stdlib
  83       ".*",                          // platform
  84       "real_concept",                // test type(s)
  85       "Beta Function: Medium.*",     // test data group
  86       "beta", 150, 40); // test function
  87    add_expected_result(
  88       ".*",                          // compiler
  89       ".*",                          // stdlib
  90       ".*",                          // platform
  91       "real_concept",                // test type(s)
  92       "Beta Function: Divergent.*",  // test data group
  93       "beta", 25, 8);   // test function
  94
  95    //
  96    // Finish off by printing out the compiler/stdlib/platform names,
  97    // we do this to make it easier to mark up expected error rates.
  98    //
  99    std::cout << "Tests run with " << BOOST_COMPILER << ", "
 100       << BOOST_STDLIB << ", " << BOOST_PLATFORM << std::endl;
 101 }
 102
 103 BOOST_AUTO_TEST_CASE( test_main )
 104 {
 105    expected_results();
 106    BOOST_MATH_CONTROL_FP;
 107    test_spots(0.0F);
 108    test_spots(0.0);
 109 #ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
 110    test_spots(0.0L);
 111 #if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x582))
 112    test_spots(boost::math::concepts::real_concept(0.1));
 113 #endif
 114 #else
 115    std::cout << "<note>The long double tests have been disabled on this platform "
 116       "either because the long double overloads of the usual math functions are "
 117       "not available at all, or because they are too inaccurate for these tests "
 118       "to pass.</note>" << std::endl;
 119 #endif
 120
 121    test_beta(0.1F, "float");
 122    test_beta(0.1, "double");
 123 #ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
 124    test_beta(0.1L, "long double");
 125 #ifndef BOOST_MATH_NO_REAL_CONCEPT_TESTS
 126 #if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x582))
 127    test_beta(boost::math::concepts::real_concept(0.1), "real_concept");
 128 #endif
 129 #endif
 130 #else
 131    std::cout << "<note>The long double tests have been disabled on this platform "
 132       "either because the long double overloads of the usual math functions are "
 133       "not available at all, or because they are too inaccurate for these tests "
 134       "to pass.</note>" << std::endl;
 135 #endif
 136 }
 137
 138
 139