90 lines
2.6 KiB
C++
90 lines
2.6 KiB
C++
// Copyright John Maddock 2006.
|
|
// Copyright Paul A. Bristow 2007, 2009
|
|
// 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)
|
|
|
|
#define BOOST_MATH_OVERFLOW_ERROR_POLICY ignore_error
|
|
|
|
#include <boost/math/special_functions/gamma.hpp>
|
|
#define BOOST_TEST_MAIN
|
|
#include <boost/test/unit_test.hpp>
|
|
#include <boost/test/floating_point_comparison.hpp>
|
|
#include <boost/math/tools/stats.hpp>
|
|
#include <boost/math/tools/test.hpp>
|
|
#include <boost/math/constants/constants.hpp>
|
|
#include <boost/type_traits/is_floating_point.hpp>
|
|
#include <boost/array.hpp>
|
|
#include "libs/math/test/functor.hpp"
|
|
|
|
#include "libs/math/test/handle_test_result.hpp"
|
|
#include "../table_type.hpp"
|
|
|
|
#ifndef SC_
|
|
#define SC_(x) static_cast<typename table_type<T>::type>(BOOST_JOIN(x, L))
|
|
#endif
|
|
|
|
template <class Real, class T>
|
|
void do_test_gamma(const T& data, const char* type_name, const char* test_name)
|
|
{
|
|
typedef typename T::value_type row_type;
|
|
typedef Real value_type;
|
|
|
|
typedef value_type (*pg)(value_type);
|
|
#if defined(BOOST_MATH_NO_DEDUCED_FUNCTION_POINTERS)
|
|
pg funcp = boost::math::tgamma<value_type>;
|
|
#else
|
|
pg funcp = boost::math::tgamma;
|
|
#endif
|
|
|
|
boost::math::tools::test_result<value_type> result;
|
|
|
|
std::cout << "Testing " << test_name << " with type " << type_name
|
|
<< "\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n";
|
|
|
|
//
|
|
// test tgamma against data:
|
|
//
|
|
result = boost::math::tools::test_hetero<Real>(
|
|
data,
|
|
bind_func<Real>(funcp, 0),
|
|
extract_result<Real>(1));
|
|
handle_test_result(result, data[result.worst()], result.worst(), type_name, "boost::math::tgamma", test_name);
|
|
|
|
//
|
|
// test lgamma against data:
|
|
//
|
|
#if defined(BOOST_MATH_NO_DEDUCED_FUNCTION_POINTERS)
|
|
funcp = boost::math::lgamma<value_type>;
|
|
#else
|
|
funcp = boost::math::lgamma;
|
|
#endif
|
|
result = boost::math::tools::test_hetero<Real>(
|
|
data,
|
|
bind_func<Real>(funcp, 0),
|
|
extract_result<Real>(2));
|
|
handle_test_result(result, data[result.worst()], result.worst(), type_name, "boost::math::lgamma", test_name);
|
|
|
|
std::cout << std::endl;
|
|
}
|
|
|
|
template <class T>
|
|
void test_gamma(T, const char* name)
|
|
{
|
|
#include "gamma.ipp"
|
|
|
|
do_test_gamma<T>(gamma, name, "random values");
|
|
|
|
#include "gamma_1_2.ipp"
|
|
|
|
do_test_gamma<T>(gamma_1_2, name, "Values near 1 and 2");
|
|
|
|
#include "gamma_0.ipp"
|
|
|
|
do_test_gamma<T>(gamma_0, name, "Values near 0");
|
|
|
|
#include "gamma_neg.ipp"
|
|
|
|
do_test_gamma<T>(gamma_neg, name, "Negative arguments");
|
|
}
|