diff --git a/ndnboost/math/tools/user.hpp b/ndnboost/math/tools/user.hpp
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+// Copyright John Maddock 2007.
+// 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)
+
+#ifndef BOOST_MATH_TOOLS_USER_HPP
+#define BOOST_MATH_TOOLS_USER_HPP
+
+#ifdef _MSC_VER
+#pragma once
+#endif
+
+// This file can be modified by the user to change the default policies.
+// See "Changing the Policy Defaults" in documentation.
+
+// define this if the platform has no long double functions,
+// or if the long double versions have only double precision:
+//
+// #define BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
+//
+// Performance tuning options:
+//
+// #define BOOST_MATH_POLY_METHOD 3
+// #define BOOST_MATH_RATIONAL_METHOD 3
+//
+// The maximum order of polynomial that will be evaluated
+// via an unrolled specialisation:
+//
+// #define BOOST_MATH_MAX_POLY_ORDER 17
+//
+// decide whether to store constants as integers or reals:
+//
+// #define BOOST_MATH_INT_TABLE_TYPE(RT, IT) IT
+
+//
+// Default policies follow:
+//
+// Domain errors:
+//
+// #define BOOST_MATH_DOMAIN_ERROR_POLICY throw_on_error
+//
+// Pole errors:
+//
+// #define BOOST_MATH_POLE_ERROR_POLICY throw_on_error
+//
+// Overflow Errors:
+//
+// #define BOOST_MATH_OVERFLOW_ERROR_POLICY throw_on_error
+//
+// Internal Evaluation Errors:
+//
+// #define BOOST_MATH_EVALUATION_ERROR_POLICY throw_on_error
+//
+// Underfow:
+//
+// #define BOOST_MATH_UNDERFLOW_ERROR_POLICY ignore_error
+//
+// Denorms:
+//
+// #define BOOST_MATH_DENORM_ERROR_POLICY ignore_error
+//
+// Max digits to use for internal calculations:
+//
+// #define BOOST_MATH_DIGITS10_POLICY 0
+//
+// Promote floats to doubles internally?
+//
+// #define BOOST_MATH_PROMOTE_FLOAT_POLICY true
+//
+// Promote doubles to long double internally:
+//
+// #define BOOST_MATH_PROMOTE_DOUBLE_POLICY true
+//
+// What do discrete quantiles return?
+//
+// #define BOOST_MATH_DISCRETE_QUANTILE_POLICY integer_round_outwards
+//
+// If a function is mathematically undefined
+// (for example the Cauchy distribution has no mean),
+// then do we stop the code from compiling?
+//
+// #define BOOST_MATH_ASSERT_UNDEFINED_POLICY true
+//
+// Maximum series iterstions permitted:
+//
+// #define BOOST_MATH_MAX_SERIES_ITERATION_POLICY 1000000
+//
+// Maximum root finding steps permitted:
+//
+// define BOOST_MATH_MAX_ROOT_ITERATION_POLICY 200
+
+#endif // BOOST_MATH_TOOLS_USER_HPP
+
+