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83 lines
2.7 KiB
C++
83 lines
2.7 KiB
C++
// (C) Copyright John Maddock 2006.
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// Use, modification and distribution are subject to the
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// Boost Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/math/concepts/real_concept.hpp>
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#include <boost/test/included/test_exec_monitor.hpp>
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#include <boost/test/floating_point_comparison.hpp>
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#include <boost/math/tools/stats.hpp>
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#include <boost/math/tools/test.hpp>
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#include <boost/type_traits/is_floating_point.hpp>
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#include <boost/array.hpp>
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#include <boost/lambda/lambda.hpp>
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#include <boost/lambda/bind.hpp>
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#include <boost/math/special_functions/cbrt.hpp>
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template <class T>
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void print_test_result(const boost::math::tools::test_result<T>& result,
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T worst, const char* name, const char* test)
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{
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using namespace std;
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T eps = pow(T(2), 1-boost::math::tools::digits<T>());
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std::cout << setprecision(4);
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std::cout << test << "(" << name << ") Max = " << (result.stat.max)()/eps
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<< " RMS Mean=" << result.stat.rms()/eps << " worst case at point: " << worst << std::endl;
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}
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template <class T>
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void do_test_cbrt(const T& data, const char* type_name, const char* test_name)
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{
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typedef typename T::value_type row_type;
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typedef typename row_type::value_type value_type;
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typedef value_type (*pg)(value_type);
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pg funcp = boost::math::cbrt;
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boost::math::tools::test_result<value_type> result;
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std::cout << "Testing " << test_name << " with type " << type_name
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<< "\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n";
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//
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// test erf against data:
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//
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result = boost::math::tools::test(
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data,
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boost::lambda::bind(funcp,
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boost::lambda::ret<value_type>(boost::lambda::_1[1])),
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boost::lambda::ret<value_type>(boost::lambda::_1[0]));
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result += boost::math::tools::test(
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data,
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boost::lambda::bind(funcp,
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-boost::lambda::ret<value_type>(boost::lambda::_1[1])),
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-boost::lambda::ret<value_type>(boost::lambda::_1[0]));
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print_test_result(result, data[result.worst_case][1], type_name, "boost::math::cbrt");
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std::cout << std::endl;
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}
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template <class T>
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void test_cbrt(T, const char* name)
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{
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//
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// The actual test data is rather verbose, so it's in a separate file
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//
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// The contents are as follows, each row of data contains
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// three items, input value a, input value b and erf(a, b):
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//
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# include "cbrt_data.ipp"
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do_test_cbrt(cbrt_data, name, "cbrt Function");
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}
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int test_main(int, char* [])
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{
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test_cbrt(0.1F, "float");
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test_cbrt(0.1, "double");
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test_cbrt(0.1L, "long double");
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test_cbrt(boost::math::concepts::real_concept(0.1), "real_concept");
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return 0;
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}
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