update boost

linx64/include/boost/math/ccmath/hypot.hpp

@@ -0,0 +1,114 @@
+//  (C) Copyright John Maddock 2005-2021.
+//  (C) Copyright Matt Borland 2021.
+//  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)
+
+#ifndef BOOST_MATH_CCMATH_HYPOT_HPP
+#define BOOST_MATH_CCMATH_HYPOT_HPP
+
+#include <cmath>
+#include <array>
+#include <limits>
+#include <type_traits>
+#include <boost/math/tools/config.hpp>
+#include <boost/math/tools/is_constant_evaluated.hpp>
+#include <boost/math/tools/promotion.hpp>
+#include <boost/math/ccmath/sqrt.hpp>
+#include <boost/math/ccmath/abs.hpp>
+#include <boost/math/ccmath/isinf.hpp>
+#include <boost/math/ccmath/isnan.hpp>
+#include <boost/math/ccmath/detail/swap.hpp>
+
+namespace boost::math::ccmath {
+
+namespace detail {
+
+template <typename T>
+constexpr T hypot_impl(T x, T y) noexcept
+{
+    x = boost::math::ccmath::abs(x);
+    y = boost::math::ccmath::abs(y);
+
+    if (y > x)
+    {
+        boost::math::ccmath::detail::swap(x, y);
+    }
+
+    if(x * std::numeric_limits<T>::epsilon() >= y)
+    {
+        return x;
+    }
+
+    T rat = y / x;
+    return x * boost::math::ccmath::sqrt(1 + rat * rat);
+}
+
+} // Namespace detail
+
+template <typename Real, std::enable_if_t<!std::is_integral_v<Real>, bool> = true>
+constexpr Real hypot(Real x, Real y) noexcept
+{
+    if(BOOST_MATH_IS_CONSTANT_EVALUATED(x))
+    {
+        if (boost::math::ccmath::abs(x) == static_cast<Real>(0))
+        {
+            return boost::math::ccmath::abs(y);
+        }
+        else if (boost::math::ccmath::abs(y) == static_cast<Real>(0))
+        {
+            return boost::math::ccmath::abs(x);
+        }
+        // Return +inf even if the other argument is NaN
+        else if (boost::math::ccmath::isinf(x) || boost::math::ccmath::isinf(y))
+        {
+            return std::numeric_limits<Real>::infinity();
+        }
+        else if (boost::math::ccmath::isnan(x))
+        {
+            return x;
+        }
+        else if (boost::math::ccmath::isnan(y))
+        {
+            return y;
+        }
+        
+        return boost::math::ccmath::detail::hypot_impl(x, y);
+    }
+    else
+    {
+        using std::hypot;
+        return hypot(x, y);
+    }
+}
+
+template <typename T1, typename T2>
+constexpr auto hypot(T1 x, T2 y) noexcept
+{
+    if(BOOST_MATH_IS_CONSTANT_EVALUATED(x))
+    {
+        using promoted_type = boost::math::tools::promote_args_2_t<T1, T2>;
+        return boost::math::ccmath::hypot(static_cast<promoted_type>(x), static_cast<promoted_type>(y));
+    }
+    else
+    {
+        using std::hypot;
+        return hypot(x, y);
+    }
+}
+
+constexpr float hypotf(float x, float y) noexcept
+{
+    return boost::math::ccmath::hypot(x, y);
+}
+
+#ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
+constexpr long double hypotl(long double x, long double y) noexcept
+{
+    return boost::math::ccmath::hypot(x, y);
+}
+#endif
+
+} // Namespaces
+
+#endif // BOOST_MATH_CCMATH_HYPOT_HPP