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Diffstat (limited to 'src/boost/libs/math/test/log1p_expm1_test.cpp')
-rw-r--r-- | src/boost/libs/math/test/log1p_expm1_test.cpp | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/src/boost/libs/math/test/log1p_expm1_test.cpp b/src/boost/libs/math/test/log1p_expm1_test.cpp new file mode 100644 index 00000000..04d45e2c --- /dev/null +++ b/src/boost/libs/math/test/log1p_expm1_test.cpp @@ -0,0 +1,93 @@ +// Copyright John Maddock 2005. +// Copyright Paul A. Bristow 2010 +// 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> + +// Requires MS extensions permitted or fails to link. + + +#define BOOST_MATH_OVERFLOW_ERROR_POLICY ignore_error + +#include <boost/math/concepts/real_concept.hpp> +#define BOOST_TEST_MAIN +#include <boost/test/unit_test.hpp> +#include <boost/test/tools/floating_point_comparison.hpp> +#include <boost/math/special_functions/math_fwd.hpp> +#include "log1p_expm1_test.hpp" + +// +// DESCRIPTION: +// ~~~~~~~~~~~~ +// +// This file tests the functions log1p and expm1. 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. + // + + // + // Catch all cases come last: + // + add_expected_result( + ".*", // compiler + ".*", // stdlib + ".*", // platform + ".*", // test type(s) + ".*", // test data group + ".*", // test function + 4, // Max Peek error + 3); // Max mean error + + // + // 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 ) +{ + expected_results(); + BOOST_MATH_CONTROL_FP; + test(float(0), "float"); + test(double(0), "double"); + // + // The long double version of these tests fails on some platforms + // due to poor std lib support (not enough digits returned from + // std::log and std::exp): + // +#if !defined(BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS) + test((long double)(0), "long double"); +#ifndef BOOST_MATH_NO_REAL_CONCEPT_TESTS + test((boost::math::concepts::real_concept)(0), "real_concept"); +#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 +} + |