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// (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
//
// Cygwin
//
add_expected_result(
"GNU.*", // compiler
"[^|]*", // stdlib
"Cygwin*", // 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(BOOST_BORLANDC, BOOST_TESTED_AT(0x582)) && !defined(BOOST_MATH_NO_REAL_CONCEPT_TESTS)
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(BOOST_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
}
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