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diff --git a/src/third_party/boost-1.68.0/boost/math/special_functions/trunc.hpp b/src/third_party/boost-1.68.0/boost/math/special_functions/trunc.hpp
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index 3f80c96fee4..00000000000
--- a/src/third_party/boost-1.68.0/boost/math/special_functions/trunc.hpp
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@@ -1,111 +0,0 @@
-// Copyright John Maddock 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)
-
-#ifndef BOOST_MATH_TRUNC_HPP
-#define BOOST_MATH_TRUNC_HPP
-
-#ifdef _MSC_VER
-#pragma once
-#endif
-
-#include <boost/math/special_functions/math_fwd.hpp>
-#include <boost/math/tools/config.hpp>
-#include <boost/math/policies/error_handling.hpp>
-#include <boost/math/special_functions/fpclassify.hpp>
-
-namespace boost{ namespace math{ namespace detail{
-
-template <class T, class Policy>
-inline typename tools::promote_args<T>::type trunc(const T& v, const Policy& pol, const mpl::false_&)
-{
- BOOST_MATH_STD_USING
- typedef typename tools::promote_args<T>::type result_type;
- if(!(boost::math::isfinite)(v))
- return policies::raise_rounding_error("boost::math::trunc<%1%>(%1%)", 0, static_cast<result_type>(v), static_cast<result_type>(v), pol);
- return (v >= 0) ? static_cast<result_type>(floor(v)) : static_cast<result_type>(ceil(v));
-}
-
-template <class T, class Policy>
-inline typename tools::promote_args<T>::type trunc(const T& v, const Policy&, const mpl::true_&)
-{
- return v;
-}
-
-}
-
-template <class T, class Policy>
-inline typename tools::promote_args<T>::type trunc(const T& v, const Policy& pol)
-{
- return detail::trunc(v, pol, mpl::bool_<detail::is_integer_for_rounding<T>::value>());
-}
-template <class T>
-inline typename tools::promote_args<T>::type trunc(const T& v)
-{
- return trunc(v, policies::policy<>());
-}
-//
-// The following functions will not compile unless T has an
-// implicit convertion to the integer types. For user-defined
-// number types this will likely not be the case. In that case
-// these functions should either be specialized for the UDT in
-// question, or else overloads should be placed in the same
-// namespace as the UDT: these will then be found via argument
-// dependent lookup. See our concept archetypes for examples.
-//
-template <class T, class Policy>
-inline int itrunc(const T& v, const Policy& pol)
-{
- BOOST_MATH_STD_USING
- typedef typename tools::promote_args<T>::type result_type;
- result_type r = boost::math::trunc(v, pol);
- if((r > (std::numeric_limits<int>::max)()) || (r < (std::numeric_limits<int>::min)()))
- return static_cast<int>(policies::raise_rounding_error("boost::math::itrunc<%1%>(%1%)", 0, static_cast<result_type>(v), 0, pol));
- return static_cast<int>(r);
-}
-template <class T>
-inline int itrunc(const T& v)
-{
- return itrunc(v, policies::policy<>());
-}
-
-template <class T, class Policy>
-inline long ltrunc(const T& v, const Policy& pol)
-{
- BOOST_MATH_STD_USING
- typedef typename tools::promote_args<T>::type result_type;
- result_type r = boost::math::trunc(v, pol);
- if((r > (std::numeric_limits<long>::max)()) || (r < (std::numeric_limits<long>::min)()))
- return static_cast<long>(policies::raise_rounding_error("boost::math::ltrunc<%1%>(%1%)", 0, static_cast<result_type>(v), 0L, pol));
- return static_cast<long>(r);
-}
-template <class T>
-inline long ltrunc(const T& v)
-{
- return ltrunc(v, policies::policy<>());
-}
-
-#ifdef BOOST_HAS_LONG_LONG
-
-template <class T, class Policy>
-inline boost::long_long_type lltrunc(const T& v, const Policy& pol)
-{
- BOOST_MATH_STD_USING
- typedef typename tools::promote_args<T>::type result_type;
- result_type r = boost::math::trunc(v, pol);
- if((r > (std::numeric_limits<boost::long_long_type>::max)()) || (r < (std::numeric_limits<boost::long_long_type>::min)()))
- return static_cast<boost::long_long_type>(policies::raise_rounding_error("boost::math::lltrunc<%1%>(%1%)", 0, v, static_cast<boost::long_long_type>(0), pol));
- return static_cast<boost::long_long_type>(r);
-}
-template <class T>
-inline boost::long_long_type lltrunc(const T& v)
-{
- return lltrunc(v, policies::policy<>());
-}
-
-#endif
-
-}} // namespaces
-
-#endif // BOOST_MATH_TRUNC_HPP