mirror of
https://github.com/boostorg/math.git
synced 2026-01-26 06:42:12 +00:00
4ecb968fc7
Added code for extracting the sign of a number. Fixed a few bugs and tidied up the code a little in places. Changed test_result to properly encapsulate it's contents. [SVN r3106]
110 lines
3.5 KiB
C++
110 lines
3.5 KiB
C++
// (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 <boost/math/concepts/real_concept.hpp>
|
|
#include <boost/test/included/test_exec_monitor.hpp>
|
|
#include <boost/test/floating_point_comparison.hpp>
|
|
#include <boost/math/tools/stats.hpp>
|
|
#include <boost/math/tools/test.hpp>
|
|
#include <boost/type_traits/is_floating_point.hpp>
|
|
#include <boost/array.hpp>
|
|
#include <boost/lambda/lambda.hpp>
|
|
#include <boost/lambda/bind.hpp>
|
|
#include <boost/math/special_functions/cbrt.hpp>
|
|
|
|
#include "handle_test_result.hpp"
|
|
|
|
//
|
|
// DESCRIPTION:
|
|
// ~~~~~~~~~~~~
|
|
//
|
|
// This file tests the function cbrt. 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.
|
|
//
|
|
|
|
//
|
|
// 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;
|
|
}
|
|
|
|
|
|
template <class T>
|
|
void do_test_cbrt(const T& data, const char* type_name, const char* test_name)
|
|
{
|
|
typedef typename T::value_type row_type;
|
|
typedef typename row_type::value_type value_type;
|
|
|
|
typedef value_type (*pg)(value_type);
|
|
pg funcp = boost::math::cbrt;
|
|
|
|
boost::math::tools::test_result<value_type> result;
|
|
|
|
std::cout << "Testing " << test_name << " with type " << type_name
|
|
<< "\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n";
|
|
|
|
//
|
|
// test cbrt against data:
|
|
//
|
|
result = boost::math::tools::test(
|
|
data,
|
|
boost::lambda::bind(funcp,
|
|
boost::lambda::ret<value_type>(boost::lambda::_1[1])),
|
|
boost::lambda::ret<value_type>(boost::lambda::_1[0]));
|
|
result += boost::math::tools::test(
|
|
data,
|
|
boost::lambda::bind(funcp,
|
|
-boost::lambda::ret<value_type>(boost::lambda::_1[1])),
|
|
-boost::lambda::ret<value_type>(boost::lambda::_1[0]));
|
|
handle_test_result(result, data[result.worst()], result.worst(), type_name, "boost::math::cbrt", test_name);
|
|
std::cout << std::endl;
|
|
}
|
|
template <class T>
|
|
void test_cbrt(T, const char* name)
|
|
{
|
|
//
|
|
// The actual test data is rather verbose, so it's in a separate file
|
|
//
|
|
// The contents are as follows, each row of data contains
|
|
// three items, input value a, input value b and erf(a, b):
|
|
//
|
|
# include "cbrt_data.ipp"
|
|
|
|
do_test_cbrt(cbrt_data, name, "cbrt Function");
|
|
|
|
}
|
|
|
|
int test_main(int, char* [])
|
|
{
|
|
test_cbrt(0.1F, "float");
|
|
test_cbrt(0.1, "double");
|
|
test_cbrt(0.1L, "long double");
|
|
test_cbrt(boost::math::concepts::real_concept(0.1), "real_concept");
|
|
return 0;
|
|
}
|
|
|
|
|