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			217 lines
		
	
	
		
			8.6 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
		
		
			
		
	
	
			217 lines
		
	
	
		
			8.6 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/concepts/real_concept.hpp>
 | ||
|  | #define BOOST_TEST_MAIN
 | ||
|  | #include <boost/test/unit_test.hpp>
 | ||
|  | #include <boost/test/floating_point_comparison.hpp>
 | ||
|  | #include <boost/math/special_functions/math_fwd.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 "functor.hpp"
 | ||
|  | 
 | ||
|  | #ifdef TEST_GSL
 | ||
|  | #include <gsl/gsl_errno.h>
 | ||
|  | #include <gsl/gsl_message.h>
 | ||
|  | #endif
 | ||
|  | 
 | ||
|  | #include "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 test_inverses(const T& data) | ||
|  | { | ||
|  |    using namespace std; | ||
|  |    //typedef typename T::value_type row_type;
 | ||
|  |    typedef Real                   value_type; | ||
|  | 
 | ||
|  |    value_type precision = static_cast<value_type>(ldexp(1.0, 1-boost::math::policies::digits<value_type, boost::math::policies::policy<> >()/2)) * 100; | ||
|  |    if(boost::math::policies::digits<value_type, boost::math::policies::policy<> >() < 50) | ||
|  |       precision = 1;   // 1% or two decimal digits, all we can hope for when the input is truncated
 | ||
|  | 
 | ||
|  |    for(unsigned i = 0; i < data.size(); ++i) | ||
|  |    { | ||
|  |       //
 | ||
|  |       // These inverse tests are thrown off if the output of the
 | ||
|  |       // incomplete beta is too close to 1: basically there is insuffient
 | ||
|  |       // information left in the value we're using as input to the inverse
 | ||
|  |       // to be able to get back to the original value.
 | ||
|  |       //
 | ||
|  |       if(Real(data[i][5]) == 0) | ||
|  |       { | ||
|  |          BOOST_CHECK_EQUAL(boost::math::ibeta_inva(Real(data[i][1]), Real(data[i][2]), Real(data[i][5])), std::numeric_limits<value_type>::has_infinity ? std::numeric_limits<value_type>::infinity() : boost::math::tools::max_value<value_type>()); | ||
|  |          BOOST_CHECK_EQUAL(boost::math::ibeta_invb(Real(data[i][0]), Real(data[i][2]), Real(data[i][5])), boost::math::tools::min_value<value_type>()); | ||
|  |       } | ||
|  |       else if((1 - Real(data[i][5]) > 0.001)  | ||
|  |          && (fabs(Real(data[i][5])) > 2 * boost::math::tools::min_value<value_type>())  | ||
|  |          && (fabs(Real(data[i][5])) > 2 * boost::math::tools::min_value<double>())) | ||
|  |       { | ||
|  |          value_type inv = boost::math::ibeta_inva(Real(data[i][1]), Real(data[i][2]), Real(data[i][5])); | ||
|  |          BOOST_CHECK_CLOSE(Real(data[i][0]), inv, precision); | ||
|  |          inv = boost::math::ibeta_invb(Real(data[i][0]), Real(data[i][2]), Real(data[i][5])); | ||
|  |          BOOST_CHECK_CLOSE(Real(data[i][1]), inv, precision); | ||
|  |       } | ||
|  |       else if(1 == Real(data[i][5])) | ||
|  |       { | ||
|  |          BOOST_CHECK_EQUAL(boost::math::ibeta_inva(Real(data[i][1]), Real(data[i][2]), Real(data[i][5])), boost::math::tools::min_value<value_type>()); | ||
|  |          BOOST_CHECK_EQUAL(boost::math::ibeta_invb(Real(data[i][0]), Real(data[i][2]), Real(data[i][5])), std::numeric_limits<value_type>::has_infinity ? std::numeric_limits<value_type>::infinity() : boost::math::tools::max_value<value_type>()); | ||
|  |       } | ||
|  | 
 | ||
|  |       if(Real(data[i][6]) == 0) | ||
|  |       { | ||
|  |          BOOST_CHECK_EQUAL(boost::math::ibetac_inva(Real(data[i][1]), Real(data[i][2]), Real(data[i][6])), boost::math::tools::min_value<value_type>()); | ||
|  |          BOOST_CHECK_EQUAL(boost::math::ibetac_invb(Real(data[i][0]), Real(data[i][2]), Real(data[i][6])), std::numeric_limits<value_type>::has_infinity ? std::numeric_limits<value_type>::infinity() : boost::math::tools::max_value<value_type>()); | ||
|  |       } | ||
|  |       else if((1 - Real(data[i][6]) > 0.001)  | ||
|  |          && (fabs(Real(data[i][6])) > 2 * boost::math::tools::min_value<value_type>())  | ||
|  |          && (fabs(Real(data[i][6])) > 2 * boost::math::tools::min_value<double>())) | ||
|  |       { | ||
|  |          value_type inv = boost::math::ibetac_inva(Real(data[i][1]), Real(data[i][2]), Real(data[i][6])); | ||
|  |          BOOST_CHECK_CLOSE(Real(data[i][0]), inv, precision); | ||
|  |          inv = boost::math::ibetac_invb(Real(data[i][0]), Real(data[i][2]), Real(data[i][6])); | ||
|  |          BOOST_CHECK_CLOSE(Real(data[i][1]), inv, precision); | ||
|  |       } | ||
|  |       else if(Real(data[i][6]) == 1) | ||
|  |       { | ||
|  |          BOOST_CHECK_EQUAL(boost::math::ibetac_inva(Real(data[i][1]), Real(data[i][2]), Real(data[i][6])), std::numeric_limits<value_type>::has_infinity ? std::numeric_limits<value_type>::infinity() : boost::math::tools::max_value<value_type>()); | ||
|  |          BOOST_CHECK_EQUAL(boost::math::ibetac_invb(Real(data[i][0]), Real(data[i][2]), Real(data[i][6])), boost::math::tools::min_value<value_type>()); | ||
|  |       } | ||
|  |    } | ||
|  | } | ||
|  | 
 | ||
|  | template <class Real, class T> | ||
|  | void test_inverses2(const T& data, const char* type_name, const char* test_name) | ||
|  | { | ||
|  | #if !(defined(ERROR_REPORTING_MODE) && !defined(IBETA_INVA_FUNCTION_TO_TEST))
 | ||
|  |    //typedef typename T::value_type row_type;
 | ||
|  |    typedef Real                   value_type; | ||
|  | 
 | ||
|  |    typedef value_type (*pg)(value_type, value_type, value_type); | ||
|  | #ifdef IBETA_INVA_FUNCTION_TO_TEST
 | ||
|  |    pg funcp = IBETA_INVA_FUNCTION_TO_TEST; | ||
|  | #elif defined(BOOST_MATH_NO_DEDUCED_FUNCTION_POINTERS)
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|  |    pg funcp = boost::math::ibeta_inva<value_type, value_type, value_type>; | ||
|  | #else
 | ||
|  |    pg funcp = boost::math::ibeta_inva; | ||
|  | #endif
 | ||
|  | 
 | ||
|  |    boost::math::tools::test_result<value_type> result; | ||
|  | 
 | ||
|  |    std::cout << "Testing " << test_name << " with type " << type_name | ||
|  |       << "\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n"; | ||
|  | 
 | ||
|  |    //
 | ||
|  |    // test ibeta_inva(T, T, T) against data:
 | ||
|  |    //
 | ||
|  |    result = boost::math::tools::test_hetero<Real>( | ||
|  |       data, | ||
|  |       bind_func<Real>(funcp, 0, 1, 2), | ||
|  |       extract_result<Real>(3)); | ||
|  |    handle_test_result(result, data[result.worst()], result.worst(), type_name, "ibeta_inva", test_name); | ||
|  |    //
 | ||
|  |    // test ibetac_inva(T, T, T) against data:
 | ||
|  |    //
 | ||
|  | #ifdef IBETAC_INVA_FUNCTION_TO_TEST
 | ||
|  |    funcp = IBETAC_INVA_FUNCTION_TO_TEST; | ||
|  | #elif defined(BOOST_MATH_NO_DEDUCED_FUNCTION_POINTERS)
 | ||
|  |    funcp = boost::math::ibetac_inva<value_type, value_type, value_type>; | ||
|  | #else
 | ||
|  |    funcp = boost::math::ibetac_inva; | ||
|  | #endif
 | ||
|  |    result = boost::math::tools::test_hetero<Real>( | ||
|  |       data, | ||
|  |       bind_func<Real>(funcp, 0, 1, 2), | ||
|  |       extract_result<Real>(4)); | ||
|  |    handle_test_result(result, data[result.worst()], result.worst(), type_name, "ibetac_inva", test_name); | ||
|  |    //
 | ||
|  |    // test ibeta_invb(T, T, T) against data:
 | ||
|  |    //
 | ||
|  | #ifdef IBETA_INVB_FUNCTION_TO_TEST
 | ||
|  |    funcp = IBETA_INVB_FUNCTION_TO_TEST; | ||
|  | #elif defined(BOOST_MATH_NO_DEDUCED_FUNCTION_POINTERS)
 | ||
|  |    funcp = boost::math::ibeta_invb<value_type, value_type, value_type>; | ||
|  | #else
 | ||
|  |    funcp = boost::math::ibeta_invb; | ||
|  | #endif
 | ||
|  |    result = boost::math::tools::test_hetero<Real>( | ||
|  |       data, | ||
|  |       bind_func<Real>(funcp, 0, 1, 2), | ||
|  |       extract_result<Real>(5)); | ||
|  |    handle_test_result(result, data[result.worst()], result.worst(), type_name, "ibeta_invb", test_name); | ||
|  |    //
 | ||
|  |    // test ibetac_invb(T, T, T) against data:
 | ||
|  |    //
 | ||
|  | #ifdef IBETAC_INVB_FUNCTION_TO_TEST
 | ||
|  |    funcp = IBETAC_INVB_FUNCTION_TO_TEST; | ||
|  | #elif defined(BOOST_MATH_NO_DEDUCED_FUNCTION_POINTERS)
 | ||
|  |    funcp = boost::math::ibetac_invb<value_type, value_type, value_type>; | ||
|  | #else
 | ||
|  |    funcp = boost::math::ibetac_invb; | ||
|  | #endif
 | ||
|  |    result = boost::math::tools::test_hetero<Real>( | ||
|  |       data, | ||
|  |       bind_func<Real>(funcp, 0, 1, 2), | ||
|  |       extract_result<Real>(6)); | ||
|  |    handle_test_result(result, data[result.worst()], result.worst(), type_name, "ibetac_invb", test_name); | ||
|  | #endif
 | ||
|  | } | ||
|  | 
 | ||
|  | template <class T> | ||
|  | void test_beta(T, const char* name) | ||
|  | { | ||
|  | #if !defined(ERROR_REPORTING_MODE)
 | ||
|  |    //
 | ||
|  |    // The actual test data is rather verbose, so it's in a separate file
 | ||
|  |    //
 | ||
|  |    // The contents are as follows, each row of data contains
 | ||
|  |    // five items, input value a, input value b, integration limits x, beta(a, b, x) and ibeta(a, b, x):
 | ||
|  |    //
 | ||
|  |    std::cout << "Running sanity checks for type " << name << std::endl; | ||
|  | 
 | ||
|  | #if !defined(TEST_DATA) || (TEST_DATA == 1)
 | ||
|  | #  include "ibeta_small_data.ipp"
 | ||
|  | 
 | ||
|  |    test_inverses<T>(ibeta_small_data); | ||
|  | #endif
 | ||
|  | 
 | ||
|  | #if !defined(TEST_DATA) || (TEST_DATA == 2)
 | ||
|  | #  include "ibeta_data.ipp"
 | ||
|  | 
 | ||
|  |    test_inverses<T>(ibeta_data); | ||
|  | #endif
 | ||
|  | 
 | ||
|  | #if !defined(TEST_DATA) || (TEST_DATA == 3)
 | ||
|  | #  include "ibeta_large_data.ipp"
 | ||
|  | 
 | ||
|  |    test_inverses<T>(ibeta_large_data); | ||
|  | #endif
 | ||
|  | #endif
 | ||
|  | 
 | ||
|  | #if !defined(TEST_REAL_CONCEPT) || defined(FULL_TEST) || (TEST_DATA == 4)
 | ||
|  |    if(boost::is_floating_point<T>::value){ | ||
|  |    //
 | ||
|  |    // This accuracy test is normally only enabled for "real"
 | ||
|  |    // floating point types and not for class real_concept.
 | ||
|  |    // The reason is that these tests are exceptionally slow
 | ||
|  |    // to complete when T doesn't have Lanczos support defined for it.
 | ||
|  |    //
 | ||
|  | #  include "ibeta_inva_data.ipp"
 | ||
|  | 
 | ||
|  |    test_inverses2<T>(ibeta_inva_data, name, "Inverse incomplete beta"); | ||
|  |    } | ||
|  | #endif
 | ||
|  | } | ||
|  | 
 |