mirror of
https://github.com/boostorg/math.git
synced 2026-01-19 04:22:09 +00:00
34 lines
1.3 KiB
C++
34 lines
1.3 KiB
C++
// Copyright Matt Borland, 2022
|
|
// 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 "math_unit_test.hpp"
|
|
#include <boost/math/distributions/non_central_t.hpp>
|
|
|
|
template <typename T>
|
|
void test()
|
|
{
|
|
boost::math::non_central_t_distribution<T> nct(T(10), T(3));
|
|
|
|
// https://www.wolframalpha.com/input?i2d=true&i=N%5C%2891%29Kurtosis%5C%2891%29NoncentralStudentTDistribution%5C%2891%2910%5C%2844%29+3%5C%2893%29%5C%2893%29%5C%2844%2930%5C%2893%29
|
|
CHECK_MOLLIFIED_CLOSE(boost::math::kurtosis(nct), T(5.44234533171835241424739188827L), 1e-6);
|
|
|
|
boost::math::non_central_t_distribution<T> nct0(T(10), T(0));
|
|
|
|
// https://www.wolframalpha.com/input?i2d=true&i=Kurtosis%5C%2891%29NoncentralStudentTDistribution%5C%2891%2910%5C%2844%29+0%5C%2893%29%5C%2893%29
|
|
CHECK_ULP_CLOSE(boost::math::kurtosis(nct0), T(4), 1);
|
|
|
|
// https://www.wolframalpha.com/input?i2d=true&i=ExcessKurtosis%5C%2891%29NoncentralStudentTDistribution%5C%2891%2910%5C%2844%29+0%5C%2893%29%5C%2893%29
|
|
CHECK_ULP_CLOSE(boost::math::kurtosis_excess(nct0), T(1), 1);
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
test<float>();
|
|
test<double>();
|
|
test<long double>();
|
|
|
|
return boost::math::test::report_errors();
|
|
}
|