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

   1 //  (C) Copyright John Maddock 2006.
   2 //  Use, modification and distribution are subject to the
   3 //  Boost Software License, Version 1.0. (See accompanying file
   4 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #include <pch_light.hpp>
   7 #include "test_igamma_inva.hpp"
   8
   9 #if !defined(TEST_FLOAT) && !defined(TEST_DOUBLE) && !defined(TEST_LDOUBLE) && !defined(TEST_REAL_CONCEPT)
  10 #  define TEST_FLOAT
  11 #  define TEST_DOUBLE
  12 #  define TEST_LDOUBLE
  13 #  define TEST_REAL_CONCEPT
  14 #endif
  15
  16 //
  17 // DESCRIPTION:
  18 // ~~~~~~~~~~~~
  19 //
  20 // This file tests the incomplete gamma function inverses
  21 // gamma_p_inva and gamma_q_inva. There are two sets of tests:
  22 // 2) TODO: Accuracy tests use values generated with NTL::RR at
  23 // 1000-bit precision and our generic versions of these functions.
  24 // 3) Round trip sanity checks, use the test data for the forward
  25 // functions, and verify that we can get (approximately) back
  26 // where we started.
  27 //
  28 // Note that when this file is first run on a new platform many of
  29 // these tests will fail: the default accuracy is 1 epsilon which
  30 // is too tight for most platforms.  In this situation you will
  31 // need to cast a human eye over the error rates reported and make
  32 // a judgement as to whether they are acceptable.  Either way please
  33 // report the results to the Boost mailing list.  Acceptable rates of
  34 // error are marked up below as a series of regular expressions that
  35 // identify the compiler/stdlib/platform/data-type/test-data/test-function
  36 // along with the maximum expected peek and RMS mean errors for that
  37 // test.
  38 //
  39
  40 void expected_results()
  41 {
  42    //
  43    // Define the max and mean errors expected for
  44    // various compilers and platforms.
  45    //
  46    const char* largest_type;
  47 #ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
  48    if(boost::math::policies::digits<double, boost::math::policies::policy<> >() == boost::math::policies::digits<long double, boost::math::policies::policy<> >())
  49    {
  50       largest_type = "(long\\s+)?double";
  51    }
  52    else
  53    {
  54       largest_type = "long double";
  55    }
  56 #else
  57    largest_type = "(long\\s+)?double";
  58 #endif
  59    //
  60    // Linux:
  61    //
  62    add_expected_result(
  63       "[^|]*",                          // compiler
  64       "[^|]*",                          // stdlib
  65       "linux",                          // platform
  66       largest_type,                     // test type(s)
  67       "[^|]*",                          // test data group
  68       "[^|]*", 800, 200);               // test function
  69
  70    //
  71    // Catch all cases come last:
  72    //
  73    add_expected_result(
  74       "[^|]*",                          // compiler
  75       "[^|]*",                          // stdlib
  76       "[^|]*",                          // platform
  77       "real_concept",                   // test type(s)
  78       "[^|]*",                          // test data group
  79       "[^|]*", 3000, 1000);             // test function
  80    add_expected_result(
  81       "[^|]*",                          // compiler
  82       "[^|]*",                          // stdlib
  83       "[^|]*",                          // platform
  84       largest_type,                     // test type(s)
  85       "[^|]*",                          // test data group
  86       "[^|]*", 300, 100);               // test function
  87    // this one has to come last in case double *is* the widest
  88    // float type:
  89    add_expected_result(
  90       "[^|]*",                          // compiler
  91       "[^|]*",                          // stdlib
  92       "[^|]*",                          // platform
  93       "float|double",                   // test type(s)
  94       "[^|]*",                          // test data group
  95       "[^|]*", 10, 5);                 // test function
  96    //
  97    // Finish off by printing out the compiler/stdlib/platform names,
  98    // we do this to make it easier to mark up expected error rates.
  99    //
 100    std::cout << "Tests run with " << BOOST_COMPILER << ", "
 101       << BOOST_STDLIB << ", " << BOOST_PLATFORM << std::endl;
 102 }
 103
 104 BOOST_AUTO_TEST_CASE( test_main )
 105 {
 106    expected_results();
 107    BOOST_MATH_CONTROL_FP;
 108
 109 #ifndef BOOST_MATH_BUGGY_LARGE_FLOAT_CONSTANTS
 110 #ifdef TEST_FLOAT
 111    test_gamma(0.1F, "float");
 112 #endif
 113 #endif
 114 #ifdef TEST_DOUBLE
 115    test_gamma(0.1, "double");
 116 #endif
 117 #ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
 118 #ifdef TEST_LDOUBLE
 119    test_gamma(0.1L, "long double");
 120 #endif
 121 #ifndef BOOST_MATH_NO_REAL_CONCEPT_TESTS
 122 #if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x582))
 123 #ifdef TEST_REAL_CONCEPT
 124    test_gamma(boost::math::concepts::real_concept(0.1), "real_concept");
 125 #endif
 126 #endif
 127 #endif
 128 #else
 129    std::cout << "<note>The long double tests have been disabled on this platform "
 130       "either because the long double overloads of the usual math functions are "
 131       "not available at all, or because they are too inaccurate for these tests "
 132       "to pass.</note>" << std::endl;
 133 #endif
 134
 135 }
 136
 137
 138
 139