mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2025-10-30 12:30:23 -04:00
65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
// Copyright John Maddock 2006.
|
|
// Copyright Paul A. Bristow 2007.
|
|
|
|
// 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 <pch.hpp>
|
|
|
|
#include <boost/math/tools/minima.hpp>
|
|
#define BOOST_TEST_MAIN
|
|
#include <boost/test/unit_test.hpp>
|
|
#include <boost/test/floating_point_comparison.hpp>
|
|
#include <boost/math/special_functions/gamma.hpp>
|
|
#include <iostream>
|
|
#include <iomanip>
|
|
|
|
template <class T>
|
|
struct poly_test
|
|
{
|
|
// minima is at (3,4):
|
|
T operator()(const T& v)
|
|
{
|
|
T a = v - 3;
|
|
return 3 * a * a + 4;
|
|
}
|
|
};
|
|
|
|
template <class T>
|
|
void test_minima(T, const char* /* name */)
|
|
{
|
|
std::pair<T, T> m = boost::math::tools::brent_find_minima(poly_test<T>(), T(-10), T(10), 50);
|
|
BOOST_CHECK_CLOSE(m.first, T(3), T(0.001));
|
|
BOOST_CHECK_CLOSE(m.second, T(4), T(0.001));
|
|
|
|
T (*fp)(T);
|
|
#if defined(BOOST_MATH_NO_DEDUCED_FUNCTION_POINTERS)
|
|
fp = boost::math::lgamma<T>;
|
|
#else
|
|
fp = boost::math::lgamma;
|
|
#endif
|
|
|
|
m = boost::math::tools::brent_find_minima(fp, T(0.5), T(10), 50);
|
|
BOOST_CHECK_CLOSE(m.first, T(1.461632), T(0.1));
|
|
#if defined(BOOST_MATH_NO_DEDUCED_FUNCTION_POINTERS)
|
|
fp = boost::math::tgamma<T>;
|
|
#else
|
|
fp = boost::math::tgamma;
|
|
#endif
|
|
m = boost::math::tools::brent_find_minima(fp, T(0.5), T(10), 50);
|
|
BOOST_CHECK_CLOSE(m.first, T(1.461632), T(0.1));
|
|
}
|
|
|
|
BOOST_AUTO_TEST_CASE( test_main )
|
|
{
|
|
test_minima(0.1f, "float");
|
|
test_minima(0.1, "double");
|
|
#ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
|
|
test_minima(0.1L, "long double");
|
|
#endif
|
|
|
|
}
|
|
|
|
|