76 lines
5.7 KiB
C++
76 lines
5.7 KiB
C++
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///////////////////////////////////////////////////////////////////////////////
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// Copyright Christopher Kormanyos 2014.
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// Copyright John Maddock 2014.
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// Copyright Paul Bristow 2014.
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// Distributed under the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt
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// or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// Implement quadruple-precision std::numeric_limits<> support.
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#ifndef _BOOST_CSTDFLOAT_LIMITS_2014_01_09_HPP_
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#define _BOOST_CSTDFLOAT_LIMITS_2014_01_09_HPP_
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#include <boost/math/cstdfloat/cstdfloat_types.hpp>
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#if defined(BOOST_CSTDFLOAT_HAS_INTERNAL_FLOAT128_T) && defined(BOOST_MATH_USE_FLOAT128) && !defined(BOOST_CSTDFLOAT_NO_LIBQUADMATH_SUPPORT)
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#include <limits>
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// Define the name of the global quadruple-precision function to be used for
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// calculating quiet_NaN() in the specialization of std::numeric_limits<>.
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#if defined(BOOST_INTEL)
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#define BOOST_CSTDFLOAT_FLOAT128_SQRT __sqrtq
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#elif defined(__GNUC__)
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#define BOOST_CSTDFLOAT_FLOAT128_SQRT sqrtq
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#endif
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// Forward declaration of the quadruple-precision square root function.
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extern "C" boost::math::cstdfloat::detail::float_internal128_t BOOST_CSTDFLOAT_FLOAT128_SQRT(boost::math::cstdfloat::detail::float_internal128_t) throw();
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namespace std
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{
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template<>
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class numeric_limits<boost::math::cstdfloat::detail::float_internal128_t>
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{
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public:
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BOOST_STATIC_CONSTEXPR bool is_specialized = true;
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static boost::math::cstdfloat::detail::float_internal128_t (min) () BOOST_NOEXCEPT { return BOOST_CSTDFLOAT_FLOAT128_MIN; }
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static boost::math::cstdfloat::detail::float_internal128_t (max) () BOOST_NOEXCEPT { return BOOST_CSTDFLOAT_FLOAT128_MAX; }
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static boost::math::cstdfloat::detail::float_internal128_t lowest() BOOST_NOEXCEPT { return -(max)(); }
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BOOST_STATIC_CONSTEXPR int digits = 113;
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BOOST_STATIC_CONSTEXPR int digits10 = 33;
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BOOST_STATIC_CONSTEXPR int max_digits10 = 36;
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BOOST_STATIC_CONSTEXPR bool is_signed = true;
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BOOST_STATIC_CONSTEXPR bool is_integer = false;
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BOOST_STATIC_CONSTEXPR bool is_exact = false;
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BOOST_STATIC_CONSTEXPR int radix = 2;
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static boost::math::cstdfloat::detail::float_internal128_t epsilon () { return BOOST_CSTDFLOAT_FLOAT128_EPS; }
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static boost::math::cstdfloat::detail::float_internal128_t round_error() { return BOOST_FLOAT128_C(0.5); }
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BOOST_STATIC_CONSTEXPR int min_exponent = -16381;
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BOOST_STATIC_CONSTEXPR int min_exponent10 = static_cast<int>((min_exponent * 301L) / 1000L);
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BOOST_STATIC_CONSTEXPR int max_exponent = +16384;
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BOOST_STATIC_CONSTEXPR int max_exponent10 = static_cast<int>((max_exponent * 301L) / 1000L);
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BOOST_STATIC_CONSTEXPR bool has_infinity = true;
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BOOST_STATIC_CONSTEXPR bool has_quiet_NaN = true;
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BOOST_STATIC_CONSTEXPR bool has_signaling_NaN = false;
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BOOST_STATIC_CONSTEXPR float_denorm_style has_denorm = denorm_absent;
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BOOST_STATIC_CONSTEXPR bool has_denorm_loss = false;
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static boost::math::cstdfloat::detail::float_internal128_t infinity () { return BOOST_FLOAT128_C(1.0) / BOOST_FLOAT128_C(0.0); }
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static boost::math::cstdfloat::detail::float_internal128_t quiet_NaN () { return ::BOOST_CSTDFLOAT_FLOAT128_SQRT(BOOST_FLOAT128_C(-1.0)); }
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static boost::math::cstdfloat::detail::float_internal128_t signaling_NaN() { return BOOST_FLOAT128_C(0.0); }
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static boost::math::cstdfloat::detail::float_internal128_t denorm_min () { return BOOST_FLOAT128_C(0.0); }
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BOOST_STATIC_CONSTEXPR bool is_iec559 = true;
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BOOST_STATIC_CONSTEXPR bool is_bounded = false;
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BOOST_STATIC_CONSTEXPR bool is_modulo = false;
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BOOST_STATIC_CONSTEXPR bool traps = false;
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BOOST_STATIC_CONSTEXPR bool tinyness_before = false;
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BOOST_STATIC_CONSTEXPR float_round_style round_style = round_to_nearest;
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};
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} // namespace std
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#endif // Not BOOST_CSTDFLOAT_NO_LIBQUADMATH_SUPPORT (i.e., the user would like to have libquadmath support)
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#endif // _BOOST_CSTDFLOAT_LIMITS_2014_01_09_HPP_
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