1 //  Copyright John Maddock 2008.
2 //  Use, modification and distribution are subject to the
3 //  Boost Software License, Version 1.0.  (See accompanying file
4 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
5 //
6 #  include <pch.hpp>
7 #ifndef BOOST_MATH_TR1_SOURCE
8 #  define BOOST_MATH_TR1_SOURCE
9 #endif
10 #include <boost/math/tr1.hpp>
11 #include <boost/math/special_functions/expint.hpp>
12 #include "c_policy.hpp"
13 
BOOST_PREVENT_MACRO_SUBSTITUTION(double x)14 extern "C" double BOOST_MATH_TR1_DECL boost_expint BOOST_PREVENT_MACRO_SUBSTITUTION(double x) BOOST_MATH_C99_THROW_SPEC
15 {
16    return c_policies::expint BOOST_PREVENT_MACRO_SUBSTITUTION(x);
17 }
18 
19 
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