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// Copyright Matt Borland, 2022
// Use, modification and distribution are subject to the
// Boost Software License, Version 1.0. (See accompanying file
// LICENSE or copy at http://www.boost.org/LICENSE_1_0.txt)
#include <cfenv>
#include <iostream>
#include <boost/math/distributions/non_central_f.hpp>
#include "math_unit_test.hpp"
#pragma STDC FENV_ACCESS ON
int main()
{
auto ncf1 = boost::math::non_central_f(2, 2, 2);
const auto cdf1 = boost::math::cdf(ncf1, 0.05);
// https://www.wolframalpha.com/input?i=N%5BCdf%28NonCentralFRatioDistribution%282%2C2%2C2%29%2C+0.05%29%2C+15%5D
CHECK_ULP_CLOSE(cdf1, 0.0183724431823392, 15);
if (std::fetestexcept(FE_INVALID) || std::fetestexcept(FE_DIVBYZERO))
{
return 1;
}
auto ncf2 = boost::math::non_central_f(1, 3, 2);
const auto cdf2 = boost::math::cdf(ncf2, 0.05);
// https://www.wolframalpha.com/input?i=N%5BCdf%28NonCentralFRatioDistribution%281%2C3%2C2%29%2C+0.05%29%2C+15%5D
CHECK_ULP_CLOSE(cdf2, 0.0611253404710995, 15);
if (std::fetestexcept(FE_INVALID) || std::fetestexcept(FE_DIVBYZERO))
{
return 2;
}
auto ncf3 = boost::math::non_central_f(1, 1, 2);
const auto cdf3 = boost::math::cdf(ncf3, 0.05);
// https://www.wolframalpha.com/input?i=N%5BCdf%28NonCentralFRatioDistribution%281%2C1%2C2%29%2C+0.05%29%2C+15%5D
CHECK_ULP_CLOSE(cdf3, 0.0531991288870987, 15);
if (std::fetestexcept(FE_INVALID) || std::fetestexcept(FE_DIVBYZERO))
{
return 3;
}
const auto pdf3 = boost::math::pdf(ncf3, 0.05);
// https://www.wolframalpha.com/input?i=N%5BPdf%28NonCentralFRatioDistribution%281%2C1%2C2%29%2C+0.05%29%2C+15%5D
CHECK_ULP_CLOSE(pdf3, 0.547785080683644, 15);
if (std::fetestexcept(FE_INVALID) || std::fetestexcept(FE_DIVBYZERO))
{
return 4;
}
return boost::math::test::report_errors();
}
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