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Diffstat (limited to 'src/boost/libs/math/test/test_tgamma_ratio.cpp')
| -rw-r--r-- | src/boost/libs/math/test/test_tgamma_ratio.cpp | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/src/boost/libs/math/test/test_tgamma_ratio.cpp b/src/boost/libs/math/test/test_tgamma_ratio.cpp new file mode 100644 index 00000000..02fff3d6 --- /dev/null +++ b/src/boost/libs/math/test/test_tgamma_ratio.cpp @@ -0,0 +1,180 @@ +// (C) Copyright John Maddock 2006. +// Use, modification and distribution are subject to the +// Boost Software License, Version 1.0. (See accompanying file +// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) + +#include <pch_light.hpp> +#include "test_tgamma_ratio.hpp" + +// +// DESCRIPTION: +// ~~~~~~~~~~~~ +// +// This file tests the gamma ratio functions tgamma_ratio, +// and tgamma_delta_ratio. The accuracy tests +// use values generated with NTL::RR at 1000-bit precision +// and our generic versions of these functions. +// +// Note that when this file is first run on a new platform many of +// these tests will fail: the default accuracy is 1 epsilon which +// is too tight for most platforms. In this situation you will +// need to cast a human eye over the error rates reported and make +// a judgement as to whether they are acceptable. Either way please +// report the results to the Boost mailing list. Acceptable rates of +// error are marked up below as a series of regular expressions that +// identify the compiler/stdlib/platform/data-type/test-data/test-function +// along with the maximum expected peek and RMS mean errors for that +// test. +// + +void expected_results() +{ + // + // Define the max and mean errors expected for + // various compilers and platforms. + // + const char* largest_type; +#ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS + if(boost::math::policies::digits<double, boost::math::policies::policy<> >() == boost::math::policies::digits<long double, boost::math::policies::policy<> >()) + { + largest_type = "(long\\s+)?double"; + } + else + { + largest_type = "long double"; + } +#else + largest_type = "(long\\s+)?double"; +#endif + // + // HP-UX + // This is a weird one, HP-UX and Mac OS X show up errors at float + // precision, that don't show up on other platforms. + // There appears to be some kind of rounding issue going on (not enough + // precision in the input to get the answer right): + // + add_expected_result( + "[^|]*", // compiler + "[^|]*", // stdlib + "HP-UX|Mac OS|linux|.*(bsd|BSD).*", // platform + "float", // test type(s) + "[^|]*", // test data group + "tgamma_ratio[^|]*", 35, 8); // test function + // + // Linux AMD x86em64 has slightly higher rates: + // + add_expected_result( + "[^|]*", // compiler + "[^|]*", // stdlib + "linux.*", // platform + largest_type, // test type(s) + "[^|]*", // test data group + "tgamma_ratio[^|]*", 300, 100); // test function + add_expected_result( + "[^|]*", // compiler + "[^|]*", // stdlib + "linux.*", // platform + "real_concept", // test type(s) + "[^|]*", // test data group + "tgamma_ratio[^|]*", 300, 100); // test function + + add_expected_result( + "GNU.*", // compiler + "[^|]*", // stdlib + "Win32.*", // platform + largest_type, // test type(s) + "[^|]*", // test data group + "tgamma_ratio[^|]*", 300, 100); // test function + // + // Solaris: + // + add_expected_result( + "[^|]*", // compiler + "[^|]*", // stdlib + ".*Solaris.*", // platform + largest_type, // test type(s) + "[^|]*", // test data group + "tgamma_ratio[^|]*", 200, 100); // test function + // + // Catch all cases come last: + // + add_expected_result( + "[^|]*", // compiler + "[^|]*", // stdlib + "[^|]*", // platform + largest_type, // test type(s) + "[^|]*", // test data group + "tgamma_delta_ratio[^|]*", 30, 20); // test function + add_expected_result( + "[^|]*", // compiler + "[^|]*", // stdlib + "[^|]*", // platform + largest_type, // test type(s) + "[^|]*", // test data group + "tgamma_ratio[^|]*", 100, 50); // test function + add_expected_result( + "[^|]*", // compiler + "[^|]*", // stdlib + "[^|]*", // platform + "real_concept", // test type(s) + "[^|]*", // test data group + "tgamma_delta_ratio[^|]*", 50, 20); // test function + add_expected_result( + "[^|]*", // compiler + "[^|]*", // stdlib + "[^|]*", // platform + "real_concept", // test type(s) + "[^|]*", // test data group + "[^|]*", 250, 150); // test function + + // + // Finish off by printing out the compiler/stdlib/platform names, + // we do this to make it easier to mark up expected error rates. + // + std::cout << "Tests run with " << BOOST_COMPILER << ", " + << BOOST_STDLIB << ", " << BOOST_PLATFORM << std::endl; +} + +BOOST_AUTO_TEST_CASE( test_main ) +{ + BOOST_MATH_CONTROL_FP; + expected_results(); + +#ifndef BOOST_MATH_BUGGY_LARGE_FLOAT_CONSTANTS + test_tgamma_ratio(0.1F, "float"); +#endif + test_tgamma_ratio(0.1, "double"); +#ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS + test_tgamma_ratio(0.1L, "long double"); +#ifndef BOOST_MATH_NO_REAL_CONCEPT_TESTS +#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x582)) + test_tgamma_ratio(boost::math::concepts::real_concept(0.1), "real_concept"); +#endif +#endif +#else + std::cout << "<note>The long double tests have been disabled on this platform " + "either because the long double overloads of the usual math functions are " + "not available at all, or because they are too inaccurate for these tests " + "to pass.</note>" << std::endl; +#endif + +#ifndef BOOST_MATH_BUGGY_LARGE_FLOAT_CONSTANTS + test_spots(0.1F, "float"); +#endif + test_spots(0.1, "double"); +#ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS + test_spots(0.1L, "long double"); +#ifndef BOOST_MATH_NO_REAL_CONCEPT_TESTS +#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x582)) + test_spots(boost::math::concepts::real_concept(0.1), "real_concept"); +#endif +#endif +#else + std::cout << "<note>The long double tests have been disabled on this platform " + "either because the long double overloads of the usual math functions are " + "not available at all, or because they are too inaccurate for these tests " + "to pass.</note>" << std::endl; +#endif +} + + |