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171 lines
8.7 KiB
C++
171 lines
8.7 KiB
C++
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// Copyright John Maddock 2012.
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// Use, modification and distribution are subject to the
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// Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt
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// or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_MATH_TEST_OUT_OF_RANGE_HPP
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#define BOOST_MATH_TEST_OUT_OF_RANGE_HPP
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#include <boost/math/special_functions/next.hpp>
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#include <boost/test/test_tools.hpp>
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/*` check_out_of_range functions check that bad parameters
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passed to constructors and functions throw domain_error exceptions.
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Usage is `check_out_of_range<DistributionType >(list-of-params);`
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Where list-of-params is a list of *valid* parameters from which the distribution can be constructed
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- ie the same number of args are passed to the function,
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as are passed to the distribution constructor.
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Checks:
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* Infinity or NaN passed in place of each of the valid params.
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* Infinity or NaN as a random variable.
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* Out-of-range random variable passed to pdf and cdf (ie outside of "range(distro)").
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* Out-of-range probability passed to quantile function and complement.
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but does *not* check finite but out-of-range parameters to the constructor
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because these are specific to each distribution.
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*/
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#ifdef BOOST_MSVC
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#pragma warning(push)
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#pragma warning(disable:4127)
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#endif
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template <class Distro>
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void check_support(const Distro& d)
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{ // Checks that
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typedef typename Distro::value_type value_type;
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if((boost::math::isfinite)(range(d).first) && (range(d).first != -boost::math::tools::max_value<value_type>()))
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{ // If possible, check that a random variable value just less than the bottom of the supported range throws domain errors.
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value_type m = (range(d).first == 0) ? -boost::math::tools::min_value<value_type>() : boost::math::float_prior(range(d).first);
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BOOST_ASSERT(m != range(d).first);
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BOOST_ASSERT(m < range(d).first);
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BOOST_MATH_CHECK_THROW(pdf(d, m), std::domain_error);
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BOOST_MATH_CHECK_THROW(cdf(d, m), std::domain_error);
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BOOST_MATH_CHECK_THROW(cdf(complement(d, m)), std::domain_error);
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}
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if((boost::math::isfinite)(range(d).second) && (range(d).second != boost::math::tools::max_value<value_type>()))
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{ // If possible, check that a random variable value just more than the top of the supported range throws domain errors.
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value_type m = (range(d).second == 0) ? boost::math::tools::min_value<value_type>() : boost::math::float_next(range(d).second);
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BOOST_ASSERT(m != range(d).first);
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BOOST_ASSERT(m > range(d).first);
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BOOST_MATH_CHECK_THROW(pdf(d, m), std::domain_error);
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BOOST_MATH_CHECK_THROW(cdf(d, m), std::domain_error);
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BOOST_MATH_CHECK_THROW(cdf(complement(d, m)), std::domain_error);
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}
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if(std::numeric_limits<value_type>::has_infinity)
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{ // Infinity is available,
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if((boost::math::isfinite)(range(d).second))
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{ // and top of range doesn't include infinity,
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// check that using infinity throws domain errors.
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BOOST_MATH_CHECK_THROW(pdf(d, std::numeric_limits<value_type>::infinity()), std::domain_error);
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BOOST_MATH_CHECK_THROW(cdf(d, std::numeric_limits<value_type>::infinity()), std::domain_error);
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BOOST_MATH_CHECK_THROW(cdf(complement(d, std::numeric_limits<value_type>::infinity())), std::domain_error);
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}
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if((boost::math::isfinite)(range(d).first))
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{ // and bottom of range doesn't include infinity,
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// check that using infinity throws domain_error exception.
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BOOST_MATH_CHECK_THROW(pdf(d, -std::numeric_limits<value_type>::infinity()), std::domain_error);
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BOOST_MATH_CHECK_THROW(cdf(d, -std::numeric_limits<value_type>::infinity()), std::domain_error);
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BOOST_MATH_CHECK_THROW(cdf(complement(d, -std::numeric_limits<value_type>::infinity())), std::domain_error);
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}
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// Check that using infinity with quantiles always throws domain_error exception.
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BOOST_MATH_CHECK_THROW(quantile(d, std::numeric_limits<value_type>::infinity()), std::domain_error);
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BOOST_MATH_CHECK_THROW(quantile(d, -std::numeric_limits<value_type>::infinity()), std::domain_error);
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BOOST_MATH_CHECK_THROW(quantile(complement(d, std::numeric_limits<value_type>::infinity())), std::domain_error);
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BOOST_MATH_CHECK_THROW(quantile(complement(d, -std::numeric_limits<value_type>::infinity())), std::domain_error);
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}
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if(std::numeric_limits<value_type>::has_quiet_NaN)
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{ // NaN is available.
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BOOST_MATH_CHECK_THROW(pdf(d, std::numeric_limits<value_type>::quiet_NaN()), std::domain_error);
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BOOST_MATH_CHECK_THROW(cdf(d, std::numeric_limits<value_type>::quiet_NaN()), std::domain_error);
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BOOST_MATH_CHECK_THROW(cdf(complement(d, std::numeric_limits<value_type>::quiet_NaN())), std::domain_error);
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BOOST_MATH_CHECK_THROW(pdf(d, -std::numeric_limits<value_type>::quiet_NaN()), std::domain_error);
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BOOST_MATH_CHECK_THROW(cdf(d, -std::numeric_limits<value_type>::quiet_NaN()), std::domain_error);
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BOOST_MATH_CHECK_THROW(cdf(complement(d, -std::numeric_limits<value_type>::quiet_NaN())), std::domain_error);
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BOOST_MATH_CHECK_THROW(quantile(d, std::numeric_limits<value_type>::quiet_NaN()), std::domain_error);
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BOOST_MATH_CHECK_THROW(quantile(d, -std::numeric_limits<value_type>::quiet_NaN()), std::domain_error);
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BOOST_MATH_CHECK_THROW(quantile(complement(d, std::numeric_limits<value_type>::quiet_NaN())), std::domain_error);
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BOOST_MATH_CHECK_THROW(quantile(complement(d, -std::numeric_limits<value_type>::quiet_NaN())), std::domain_error);
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}
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// Check that using probability outside [0,1] with quantiles always throws domain_error exception.
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BOOST_MATH_CHECK_THROW(quantile(d, -1), std::domain_error);
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BOOST_MATH_CHECK_THROW(quantile(d, 2), std::domain_error);
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BOOST_MATH_CHECK_THROW(quantile(complement(d, -1)), std::domain_error);
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BOOST_MATH_CHECK_THROW(quantile(complement(d, 2)), std::domain_error);
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}
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// Four check_out_of_range versions for distributions with zero to 3 constructor parameters.
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template <class Distro>
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void check_out_of_range()
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{
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Distro d;
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check_support(d);
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}
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template <class Distro>
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void check_out_of_range(typename Distro::value_type p1)
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{
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typedef typename Distro::value_type value_type;
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Distro d(p1);
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check_support(d);
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if(std::numeric_limits<value_type>::has_infinity)
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{
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BOOST_MATH_CHECK_THROW(pdf(Distro(std::numeric_limits<value_type>::infinity()), range(d).first), std::domain_error);
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// BOOST_MATH_CHECK_THROW(pdf(Distro(std::numeric_limits<value_type>::infinity()), range(d).second), std::domain_error);
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}
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if(std::numeric_limits<value_type>::has_quiet_NaN)
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{
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BOOST_MATH_CHECK_THROW(pdf(Distro(std::numeric_limits<value_type>::quiet_NaN()), range(d).first), std::domain_error);
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}
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}
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template <class Distro>
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void check_out_of_range(typename Distro::value_type p1, typename Distro::value_type p2)
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{
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typedef typename Distro::value_type value_type;
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Distro d(p1, p2);
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check_support(d);
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if(std::numeric_limits<value_type>::has_infinity)
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{
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BOOST_MATH_CHECK_THROW(pdf(Distro(std::numeric_limits<value_type>::infinity(), p2), range(d).first), std::domain_error);
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BOOST_MATH_CHECK_THROW(pdf(Distro(p1, std::numeric_limits<value_type>::infinity()), range(d).first), std::domain_error);
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}
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if(std::numeric_limits<value_type>::has_quiet_NaN)
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{
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BOOST_MATH_CHECK_THROW(pdf(Distro(std::numeric_limits<value_type>::quiet_NaN(), p2), range(d).first), std::domain_error);
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BOOST_MATH_CHECK_THROW(pdf(Distro(p1, std::numeric_limits<value_type>::quiet_NaN()), range(d).first), std::domain_error);
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}
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}
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template <class Distro>
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void check_out_of_range(typename Distro::value_type p1, typename Distro::value_type p2, typename Distro::value_type p3)
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{
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typedef typename Distro::value_type value_type;
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Distro d(p1, p2, p3);
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check_support(d);
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if(std::numeric_limits<value_type>::has_infinity)
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{
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BOOST_MATH_CHECK_THROW(pdf(Distro(std::numeric_limits<value_type>::infinity(), p2, p3), range(d).first), std::domain_error);
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BOOST_MATH_CHECK_THROW(pdf(Distro(p1, std::numeric_limits<value_type>::infinity(), p3), range(d).first), std::domain_error);
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BOOST_MATH_CHECK_THROW(pdf(Distro(p1, p2, std::numeric_limits<value_type>::infinity()), range(d).first), std::domain_error);
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}
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if(std::numeric_limits<value_type>::has_quiet_NaN)
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{
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BOOST_MATH_CHECK_THROW(pdf(Distro(std::numeric_limits<value_type>::quiet_NaN(), p2, p3), range(d).first), std::domain_error);
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BOOST_MATH_CHECK_THROW(pdf(Distro(p1, std::numeric_limits<value_type>::quiet_NaN(), p3), range(d).first), std::domain_error);
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BOOST_MATH_CHECK_THROW(pdf(Distro(p1, p2, std::numeric_limits<value_type>::quiet_NaN()), range(d).first), std::domain_error);
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}
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}
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#ifdef BOOST_MSVC
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#pragma warning(pop)
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#endif
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#endif // BOOST_MATH_TEST_OUT_OF_RANGE_HPP
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