Added thirdparty: boost library

thirdparty/include/boost/multiprecision/detail/float128_functions.hpp

@@ -0,0 +1,95 @@
+//  (C) Copyright John Maddock 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)
+//
+// We deliberately use assert in here:
+//
+
+#ifndef BOOST_MP_DETAIL_FLOAT128_FUNCTIONS_HPP
+#define BOOST_MP_DETAIL_FLOAT128_FUNCTIONS_HPP
+
+#include <boost/multiprecision/detail/standalone_config.hpp>
+
+#ifndef BOOST_MP_STANDALONE
+#include <boost/cstdfloat.hpp>
+#if defined(BOOST_MATH_USE_FLOAT128) && !defined(BOOST_CSTDFLOAT_NO_LIBQUADMATH_SUPPORT)
+#  define BOOST_MP_HAVE_CSTDFLOAT
+#endif
+#endif
+
+#if defined(BOOST_HAS_FLOAT128)
+
+namespace boost 
+{
+namespace multiprecision 
+{
+namespace float128_procs 
+{
+extern "C" __float128 ldexpq(__float128, int) throw();
+extern "C" __float128 frexpq(__float128, int*) throw();
+extern "C" __float128 floorq(__float128) throw();
+extern "C" __float128 nextafterq(__float128, __float128) throw();
+extern "C" int        isinfq(__float128) throw();
+extern "C" int        isnanq(__float128) throw();
+extern "C" __float128 strtoflt128(const char*, char**) throw();
+
+#ifdef BOOST_MP_HAVE_CSTDFLOAT
+using std::ldexp;
+using std::frexp;
+using std::floor;
+using std::nextafter;
+#else
+inline __float128 ldexp(__float128 f, int i) throw() { return ldexpq(f, i); }
+inline __float128 frexp(__float128 f, int* p) throw() { return frexpq(f, p); }
+inline __float128 floor(__float128 f) throw() { return floorq(f); }
+inline __float128 nextafter(__float128 a, __float128 b) throw() { return nextafterq(a, b); }
+#endif
+}
+
+namespace detail {
+
+template <class T>
+struct is_float128 : public std::is_same<__float128, T>
+{};
+
+}
+}
+}
+
+namespace boost {
+namespace math {
+
+   inline __float128 float_next(const __float128& f)
+   {
+      return boost::multiprecision::float128_procs::nextafterq(f, 2 * f);
+   }
+   inline int (isinf)(const __float128& f)
+   {
+      return boost::multiprecision::float128_procs::isinfq(f);
+   }
+   inline int (isnan)(const __float128& f)
+   {
+      return boost::multiprecision::float128_procs::isnanq(f);
+   }
+
+}}
+
+#define BOOST_MP_FLOAT128_USING using boost::multiprecision::float128_procs::ldexp; using boost::multiprecision::float128_procs::frexp; using boost::multiprecision::float128_procs::floor; using boost::multiprecision::float128_procs::nextafter; using boost::math::isinf; using boost::math::isnan;
+
+#else
+#define BOOST_MP_FLOAT128_USING
+
+namespace boost {
+namespace multiprecision {
+namespace detail {
+
+template <class T>
+struct is_float128 : public std::false_type
+{};
+
+}}} // namespace boost::multiprecision::detail
+
+#endif
+
+#endif // BOOST_MP_DETAIL_FLOAT128_FUNCTIONS_HPP