WSJT-X/boost/libs/math/test/almost_equal.ipp

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#ifndef BOOST_MATH_ALMOST_EQUAL_HPP
#define BOOST_MATH_ALMOST_EQUAL_HPP
// Copyright (c) 2006 Johan Rade
// Distributed under 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 <cmath>
template<class ValType>
bool almost_equal(ValType a, ValType b)
{
const ValType e = static_cast<ValType>(0.00001);
return (a - e * std::abs(a) <= b + e * std::abs(b))
&& (a + e * std::abs(a) >= b - e * std::abs(b));
}
#endif