///////////////////////////////////////////////////////////////////////////////
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// Copyright 2011 John Maddock. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_MATH_MP_TOMMATH_BACKEND_HPP
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#define BOOST_MATH_MP_TOMMATH_BACKEND_HPP
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#include <boost/multiprecision/number.hpp>
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#include <boost/multiprecision/rational_adaptor.hpp>
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#include <boost/multiprecision/detail/integer_ops.hpp>
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#include <boost/math/special_functions/fpclassify.hpp>
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#include <boost/cstdint.hpp>
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#include <boost/scoped_array.hpp>
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#include <boost/functional/hash_fwd.hpp>
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#include <tommath.h>
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#include <cctype>
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#include <cmath>
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#include <limits>
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#include <climits>
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namespace boost {
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namespace multiprecision {
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namespace backends {
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namespace detail {
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template <class ErrType>
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inline void check_tommath_result(ErrType v)
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{
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if (v != MP_OKAY)
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{
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BOOST_THROW_EXCEPTION(std::runtime_error(mp_error_to_string(v)));
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}
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}
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} // namespace detail
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struct tommath_int;
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void eval_multiply(tommath_int& t, const tommath_int& o);
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void eval_add(tommath_int& t, const tommath_int& o);
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struct tommath_int
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{
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typedef mpl::list<boost::int32_t, boost::long_long_type> signed_types;
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typedef mpl::list<boost::uint32_t, boost::ulong_long_type> unsigned_types;
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typedef mpl::list<long double> float_types;
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tommath_int()
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{
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detail::check_tommath_result(mp_init(&m_data));
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}
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tommath_int(const tommath_int& o)
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{
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detail::check_tommath_result(mp_init_copy(&m_data, const_cast< ::mp_int*>(&o.m_data)));
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}
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#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
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tommath_int(tommath_int&& o) BOOST_NOEXCEPT
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{
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m_data = o.m_data;
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o.m_data.dp = 0;
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}
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tommath_int& operator=(tommath_int&& o)
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{
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mp_exch(&m_data, &o.m_data);
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return *this;
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}
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#endif
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tommath_int& operator=(const tommath_int& o)
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{
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if (m_data.dp == 0)
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detail::check_tommath_result(mp_init(&m_data));
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if (o.m_data.dp)
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detail::check_tommath_result(mp_copy(const_cast< ::mp_int*>(&o.m_data), &m_data));
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return *this;
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}
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#if defined(DIGIT_BIT)
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// Pick off 32 bit chunks for mp_set_int:
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tommath_int& operator=(boost::ulong_long_type i)
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{
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if (m_data.dp == 0)
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detail::check_tommath_result(mp_init(&m_data));
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boost::ulong_long_type mask = ((1uLL << 32) - 1);
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unsigned shift = 0;
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::mp_int t;
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detail::check_tommath_result(mp_init(&t));
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mp_zero(&m_data);
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while (i)
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{
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detail::check_tommath_result(mp_set_int(&t, static_cast<unsigned>(i & mask)));
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if (shift)
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detail::check_tommath_result(mp_mul_2d(&t, shift, &t));
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detail::check_tommath_result((mp_add(&m_data, &t, &m_data)));
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shift += 32;
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i >>= 32;
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}
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mp_clear(&t);
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return *this;
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}
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#elif !defined(ULLONG_MAX) || (ULLONG_MAX != 18446744073709551615uLL)
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// Pick off 64 bit chunks for mp_set_i64:
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tommath_int& operator=(boost::ulong_long_type i)
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{
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if (m_data.dp == 0)
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detail::check_tommath_result(mp_init(&m_data));
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if(sizeof(boost::ulong_long_type) * CHAR_BIT == 64)
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{
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mp_set_u64(&m_data, i);
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return *this;
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}
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boost::ulong_long_type mask = ((1uLL << 64) - 1);
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unsigned shift = 0;
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::mp_int t;
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detail::check_tommath_result(mp_init(&t));
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mp_zero(&m_data);
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while (i)
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{
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detail::check_tommath_result(mp_set_i64(&t, static_cast<boost::uint64_t>(i & mask)));
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if (shift)
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detail::check_tommath_result(mp_mul_2d(&t, shift, &t));
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detail::check_tommath_result((mp_add(&m_data, &t, &m_data)));
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shift += 64;
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i >>= 64;
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}
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mp_clear(&t);
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return *this;
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}
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#else
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tommath_int& operator=(boost::ulong_long_type i)
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{
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if (m_data.dp == 0)
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detail::check_tommath_result(mp_init(&m_data));
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mp_set_u64(&m_data, i);
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return *this;
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}
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#endif
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tommath_int& operator=(boost::long_long_type i)
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{
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if (m_data.dp == 0)
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detail::check_tommath_result(mp_init(&m_data));
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bool neg = i < 0;
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*this = boost::multiprecision::detail::unsigned_abs(i);
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if (neg)
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detail::check_tommath_result(mp_neg(&m_data, &m_data));
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return *this;
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}
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//
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// Note that although mp_set_int takes an unsigned long as an argument
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// it only sets the first 32-bits to the result, and ignores the rest.
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// So use uint32_t as the largest type to pass to this function.
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//
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tommath_int& operator=(boost::uint32_t i)
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{
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if (m_data.dp == 0)
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detail::check_tommath_result(mp_init(&m_data));
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#ifdef DIGIT_BIT
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detail::check_tommath_result((mp_set_int(&m_data, i)));
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#else
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mp_set_u32(&m_data, i);
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#endif
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return *this;
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}
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tommath_int& operator=(boost::int32_t i)
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{
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if (m_data.dp == 0)
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detail::check_tommath_result(mp_init(&m_data));
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bool neg = i < 0;
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*this = boost::multiprecision::detail::unsigned_abs(i);
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if (neg)
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detail::check_tommath_result(mp_neg(&m_data, &m_data));
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return *this;
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}
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tommath_int& operator=(long double a)
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{
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using std::floor;
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using std::frexp;
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using std::ldexp;
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if (m_data.dp == 0)
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detail::check_tommath_result(mp_init(&m_data));
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if (a == 0)
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{
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#ifdef DIGIT_BIT
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detail::check_tommath_result(mp_set_int(&m_data, 0));
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#else
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mp_set_i32(&m_data, 0);
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#endif
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return *this;
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}
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if (a == 1)
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{
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#ifdef DIGIT_BIT
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detail::check_tommath_result(mp_set_int(&m_data, 1));
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#else
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mp_set_i32(&m_data, 1);
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#endif
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return *this;
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}
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BOOST_ASSERT(!(boost::math::isinf)(a));
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BOOST_ASSERT(!(boost::math::isnan)(a));
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int e;
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long double f, term;
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#ifdef DIGIT_BIT
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detail::check_tommath_result(mp_set_int(&m_data, 0u));
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#else
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mp_set_i32(&m_data, 0);
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#endif
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::mp_int t;
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detail::check_tommath_result(mp_init(&t));
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f = frexp(a, &e);
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#ifdef DIGIT_BIT
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static const int shift = std::numeric_limits<int>::digits - 1;
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typedef int part_type;
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#else
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static const int shift = std::numeric_limits<boost::int64_t>::digits - 1;
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typedef boost::int64_t part_type;
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#endif
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while (f)
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{
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// extract int sized bits from f:
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f = ldexp(f, shift);
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term = floor(f);
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e -= shift;
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detail::check_tommath_result(mp_mul_2d(&m_data, shift, &m_data));
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if (term > 0)
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{
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#ifdef DIGIT_BIT
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detail::check_tommath_result(mp_set_int(&t, static_cast<part_type>(term)));
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#else
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mp_set_i64(&t, static_cast<part_type>(term));
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#endif
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detail::check_tommath_result(mp_add(&m_data, &t, &m_data));
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}
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else
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{
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#ifdef DIGIT_BIT
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detail::check_tommath_result(mp_set_int(&t, static_cast<part_type>(-term)));
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#else
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mp_set_i64(&t, static_cast<part_type>(-term));
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#endif
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detail::check_tommath_result(mp_sub(&m_data, &t, &m_data));
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}
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f -= term;
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}
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if (e > 0)
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detail::check_tommath_result(mp_mul_2d(&m_data, e, &m_data));
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else if (e < 0)
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{
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tommath_int t2;
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detail::check_tommath_result(mp_div_2d(&m_data, -e, &m_data, &t2.data()));
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}
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mp_clear(&t);
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return *this;
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}
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tommath_int& operator=(const char* s)
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{
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//
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// We don't use libtommath's own routine because it doesn't error check the input :-(
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//
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if (m_data.dp == 0)
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detail::check_tommath_result(mp_init(&m_data));
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std::size_t n = s ? std::strlen(s) : 0;
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*this = static_cast<boost::uint32_t>(0u);
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unsigned radix = 10;
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bool isneg = false;
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if (n && (*s == '-'))
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{
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--n;
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++s;
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isneg = true;
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}
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if (n && (*s == '0'))
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{
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if ((n > 1) && ((s[1] == 'x') || (s[1] == 'X')))
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{
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radix = 16;
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s += 2;
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n -= 2;
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}
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else
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{
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radix = 8;
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n -= 1;
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}
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}
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if (n)
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{
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if (radix == 8 || radix == 16)
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{
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unsigned shift = radix == 8 ? 3 : 4;
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#ifdef DIGIT_BIT
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unsigned block_count = DIGIT_BIT / shift;
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#else
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unsigned block_count = MP_DIGIT_BIT / shift;
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#endif
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unsigned block_shift = shift * block_count;
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boost::ulong_long_type val, block;
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while (*s)
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{
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block = 0;
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for (unsigned i = 0; (i < block_count); ++i)
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{
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if (*s >= '0' && *s <= '9')
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val = *s - '0';
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else if (*s >= 'a' && *s <= 'f')
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val = 10 + *s - 'a';
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else if (*s >= 'A' && *s <= 'F')
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val = 10 + *s - 'A';
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else
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val = 400;
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if (val > radix)
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{
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BOOST_THROW_EXCEPTION(std::runtime_error("Unexpected content found while parsing character string."));
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}
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block <<= shift;
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block |= val;
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if (!*++s)
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{
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// final shift is different:
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block_shift = (i + 1) * shift;
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break;
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}
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}
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detail::check_tommath_result(mp_mul_2d(&data(), block_shift, &data()));
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if (data().used)
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data().dp[0] |= block;
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else
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*this = block;
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}
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}
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else
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{
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// Base 10, we extract blocks of size 10^9 at a time, that way
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// the number of multiplications is kept to a minimum:
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boost::uint32_t block_mult = 1000000000;
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while (*s)
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{
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boost::uint32_t block = 0;
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for (unsigned i = 0; i < 9; ++i)
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{
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boost::uint32_t val;
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if (*s >= '0' && *s <= '9')
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val = *s - '0';
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else
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BOOST_THROW_EXCEPTION(std::runtime_error("Unexpected character encountered in input."));
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block *= 10;
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block += val;
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if (!*++s)
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{
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static const boost::uint32_t block_multiplier[9] = {10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000};
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block_mult = block_multiplier[i];
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break;
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}
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}
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tommath_int t;
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t = block_mult;
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eval_multiply(*this, t);
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t = block;
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eval_add(*this, t);
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}
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}
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}
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if (isneg)
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this->negate();
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return *this;
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}
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std::string str(std::streamsize /*digits*/, std::ios_base::fmtflags f) const
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{
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BOOST_ASSERT(m_data.dp);
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int base = 10;
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if ((f & std::ios_base::oct) == std::ios_base::oct)
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base = 8;
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else if ((f & std::ios_base::hex) == std::ios_base::hex)
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base = 16;
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//
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// sanity check, bases 8 and 16 are only available for positive numbers:
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//
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if ((base != 10) && m_data.sign)
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BOOST_THROW_EXCEPTION(std::runtime_error("Formatted output in bases 8 or 16 is only available for positive numbers"));
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#ifdef DIGIT_BIT
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int s;
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detail::check_tommath_result(mp_radix_size(const_cast< ::mp_int*>(&m_data), base, &s));
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#else
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std::size_t s;
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detail::check_tommath_result(mp_radix_size(const_cast< ::mp_int*>(&m_data), base, &s));
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#endif
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boost::scoped_array<char> a(new char[s + 1]);
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#ifdef DIGIT_BIT
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detail::check_tommath_result(mp_toradix_n(const_cast< ::mp_int*>(&m_data), a.get(), base, s + 1));
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#else
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std::size_t written;
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detail::check_tommath_result(mp_to_radix(&m_data, a.get(), s + 1, &written, base));
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#endif
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std::string result = a.get();
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if (f & std::ios_base::uppercase)
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for (size_t i = 0; i < result.length(); ++i)
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result[i] = std::toupper(result[i]);
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if ((base != 10) && (f & std::ios_base::showbase))
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{
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int pos = result[0] == '-' ? 1 : 0;
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const char* pp = base == 8 ? "0" : (f & std::ios_base::uppercase) ? "0X" : "0x";
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result.insert(static_cast<std::string::size_type>(pos), pp);
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}
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if ((f & std::ios_base::showpos) && (result[0] != '-'))
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result.insert(static_cast<std::string::size_type>(0), 1, '+');
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if (((f & std::ios_base::uppercase) == 0) && (base == 16))
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{
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for (std::size_t i = 0; i < result.size(); ++i)
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result[i] = std::tolower(result[i]);
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}
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return result;
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}
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~tommath_int()
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{
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if (m_data.dp)
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mp_clear(&m_data);
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}
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void negate()
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{
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BOOST_ASSERT(m_data.dp);
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detail::check_tommath_result(mp_neg(&m_data, &m_data));
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}
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int compare(const tommath_int& o) const
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{
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BOOST_ASSERT(m_data.dp && o.m_data.dp);
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return mp_cmp(const_cast< ::mp_int*>(&m_data), const_cast< ::mp_int*>(&o.m_data));
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}
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template <class V>
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int compare(V v) const
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{
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tommath_int d;
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tommath_int t(*this);
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detail::check_tommath_result(mp_shrink(&t.data()));
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d = v;
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return t.compare(d);
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}
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::mp_int& data()
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{
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BOOST_ASSERT(m_data.dp);
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return m_data;
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}
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const ::mp_int& data() const
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{
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BOOST_ASSERT(m_data.dp);
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return m_data;
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}
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void swap(tommath_int& o) BOOST_NOEXCEPT
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{
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mp_exch(&m_data, &o.data());
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}
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protected:
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::mp_int m_data;
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};
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#ifdef SIGN
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#define BOOST_MP_TOMMATH_BIT_OP_CHECK(x) \
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if (SIGN(&x.data())) \
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BOOST_THROW_EXCEPTION(std::runtime_error("Bitwise operations on libtommath negative valued integers are disabled as they produce unpredictable results"))
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#else
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#define BOOST_MP_TOMMATH_BIT_OP_CHECK(x) \
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if (mp_isneg(&x.data())) \
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BOOST_THROW_EXCEPTION(std::runtime_error("Bitwise operations on libtommath negative valued integers are disabled as they produce unpredictable results"))
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#endif
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int eval_get_sign(const tommath_int& val);
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inline void eval_add(tommath_int& t, const tommath_int& o)
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{
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detail::check_tommath_result(mp_add(&t.data(), const_cast< ::mp_int*>(&o.data()), &t.data()));
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}
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inline void eval_subtract(tommath_int& t, const tommath_int& o)
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{
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detail::check_tommath_result(mp_sub(&t.data(), const_cast< ::mp_int*>(&o.data()), &t.data()));
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}
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inline void eval_multiply(tommath_int& t, const tommath_int& o)
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{
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detail::check_tommath_result(mp_mul(&t.data(), const_cast< ::mp_int*>(&o.data()), &t.data()));
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}
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inline void eval_divide(tommath_int& t, const tommath_int& o)
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{
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using default_ops::eval_is_zero;
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tommath_int temp;
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if (eval_is_zero(o))
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BOOST_THROW_EXCEPTION(std::overflow_error("Integer division by zero"));
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detail::check_tommath_result(mp_div(&t.data(), const_cast< ::mp_int*>(&o.data()), &t.data(), &temp.data()));
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}
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inline void eval_modulus(tommath_int& t, const tommath_int& o)
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{
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using default_ops::eval_is_zero;
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if (eval_is_zero(o))
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BOOST_THROW_EXCEPTION(std::overflow_error("Integer division by zero"));
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bool neg = eval_get_sign(t) < 0;
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bool neg2 = eval_get_sign(o) < 0;
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detail::check_tommath_result(mp_mod(&t.data(), const_cast< ::mp_int*>(&o.data()), &t.data()));
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if ((neg != neg2) && (eval_get_sign(t) != 0))
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{
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t.negate();
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detail::check_tommath_result(mp_add(&t.data(), const_cast< ::mp_int*>(&o.data()), &t.data()));
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t.negate();
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}
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else if (neg && (t.compare(o) == 0))
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{
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mp_zero(&t.data());
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}
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}
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template <class UI>
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inline void eval_left_shift(tommath_int& t, UI i)
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{
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detail::check_tommath_result(mp_mul_2d(&t.data(), static_cast<unsigned>(i), &t.data()));
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}
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template <class UI>
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inline void eval_right_shift(tommath_int& t, UI i)
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{
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using default_ops::eval_decrement;
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using default_ops::eval_increment;
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bool neg = eval_get_sign(t) < 0;
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tommath_int d;
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if (neg)
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eval_increment(t);
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detail::check_tommath_result(mp_div_2d(&t.data(), static_cast<unsigned>(i), &t.data(), &d.data()));
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if (neg)
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eval_decrement(t);
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}
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template <class UI>
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inline void eval_left_shift(tommath_int& t, const tommath_int& v, UI i)
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{
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detail::check_tommath_result(mp_mul_2d(const_cast< ::mp_int*>(&v.data()), static_cast<unsigned>(i), &t.data()));
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}
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/*
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template <class UI>
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inline void eval_right_shift(tommath_int& t, const tommath_int& v, UI i)
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{
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tommath_int d;
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detail::check_tommath_result(mp_div_2d(const_cast< ::mp_int*>(&v.data()), static_cast<unsigned long>(i), &t.data(), &d.data()));
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}
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*/
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inline void eval_bitwise_and(tommath_int& result, const tommath_int& v)
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{
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BOOST_MP_TOMMATH_BIT_OP_CHECK(result);
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BOOST_MP_TOMMATH_BIT_OP_CHECK(v);
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detail::check_tommath_result(mp_and(&result.data(), const_cast< ::mp_int*>(&v.data()), &result.data()));
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}
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inline void eval_bitwise_or(tommath_int& result, const tommath_int& v)
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{
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BOOST_MP_TOMMATH_BIT_OP_CHECK(result);
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BOOST_MP_TOMMATH_BIT_OP_CHECK(v);
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detail::check_tommath_result(mp_or(&result.data(), const_cast< ::mp_int*>(&v.data()), &result.data()));
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}
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inline void eval_bitwise_xor(tommath_int& result, const tommath_int& v)
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{
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BOOST_MP_TOMMATH_BIT_OP_CHECK(result);
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BOOST_MP_TOMMATH_BIT_OP_CHECK(v);
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detail::check_tommath_result(mp_xor(&result.data(), const_cast< ::mp_int*>(&v.data()), &result.data()));
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}
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inline void eval_add(tommath_int& t, const tommath_int& p, const tommath_int& o)
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{
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detail::check_tommath_result(mp_add(const_cast< ::mp_int*>(&p.data()), const_cast< ::mp_int*>(&o.data()), &t.data()));
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}
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inline void eval_subtract(tommath_int& t, const tommath_int& p, const tommath_int& o)
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{
|
detail::check_tommath_result(mp_sub(const_cast< ::mp_int*>(&p.data()), const_cast< ::mp_int*>(&o.data()), &t.data()));
|
}
|
inline void eval_multiply(tommath_int& t, const tommath_int& p, const tommath_int& o)
|
{
|
detail::check_tommath_result(mp_mul(const_cast< ::mp_int*>(&p.data()), const_cast< ::mp_int*>(&o.data()), &t.data()));
|
}
|
inline void eval_divide(tommath_int& t, const tommath_int& p, const tommath_int& o)
|
{
|
using default_ops::eval_is_zero;
|
tommath_int d;
|
if (eval_is_zero(o))
|
BOOST_THROW_EXCEPTION(std::overflow_error("Integer division by zero"));
|
detail::check_tommath_result(mp_div(const_cast< ::mp_int*>(&p.data()), const_cast< ::mp_int*>(&o.data()), &t.data(), &d.data()));
|
}
|
inline void eval_modulus(tommath_int& t, const tommath_int& p, const tommath_int& o)
|
{
|
using default_ops::eval_is_zero;
|
if (eval_is_zero(o))
|
BOOST_THROW_EXCEPTION(std::overflow_error("Integer division by zero"));
|
bool neg = eval_get_sign(p) < 0;
|
bool neg2 = eval_get_sign(o) < 0;
|
detail::check_tommath_result(mp_mod(const_cast< ::mp_int*>(&p.data()), const_cast< ::mp_int*>(&o.data()), &t.data()));
|
if ((neg != neg2) && (eval_get_sign(t) != 0))
|
{
|
t.negate();
|
detail::check_tommath_result(mp_add(&t.data(), const_cast< ::mp_int*>(&o.data()), &t.data()));
|
t.negate();
|
}
|
else if (neg && (t.compare(o) == 0))
|
{
|
mp_zero(&t.data());
|
}
|
}
|
|
inline void eval_bitwise_and(tommath_int& result, const tommath_int& u, const tommath_int& v)
|
{
|
BOOST_MP_TOMMATH_BIT_OP_CHECK(u);
|
BOOST_MP_TOMMATH_BIT_OP_CHECK(v);
|
detail::check_tommath_result(mp_and(const_cast< ::mp_int*>(&u.data()), const_cast< ::mp_int*>(&v.data()), &result.data()));
|
}
|
|
inline void eval_bitwise_or(tommath_int& result, const tommath_int& u, const tommath_int& v)
|
{
|
BOOST_MP_TOMMATH_BIT_OP_CHECK(u);
|
BOOST_MP_TOMMATH_BIT_OP_CHECK(v);
|
detail::check_tommath_result(mp_or(const_cast< ::mp_int*>(&u.data()), const_cast< ::mp_int*>(&v.data()), &result.data()));
|
}
|
|
inline void eval_bitwise_xor(tommath_int& result, const tommath_int& u, const tommath_int& v)
|
{
|
BOOST_MP_TOMMATH_BIT_OP_CHECK(u);
|
BOOST_MP_TOMMATH_BIT_OP_CHECK(v);
|
detail::check_tommath_result(mp_xor(const_cast< ::mp_int*>(&u.data()), const_cast< ::mp_int*>(&v.data()), &result.data()));
|
}
|
/*
|
inline void eval_complement(tommath_int& result, const tommath_int& u)
|
{
|
//
|
// Although this code works, it doesn't really do what the user might expect....
|
// and it's hard to see how it ever could. Disabled for now:
|
//
|
result = u;
|
for(int i = 0; i < result.data().used; ++i)
|
{
|
result.data().dp[i] = MP_MASK & ~(result.data().dp[i]);
|
}
|
//
|
// We now need to pad out the left of the value with 1's to round up to a whole number of
|
// CHAR_BIT * sizeof(mp_digit) units. Otherwise we'll end up with a very strange number of
|
// bits set!
|
//
|
unsigned shift = result.data().used * DIGIT_BIT; // How many bits we're actually using
|
// How many bits we actually need, reduced by one to account for a mythical sign bit:
|
int padding = result.data().used * std::numeric_limits<mp_digit>::digits - shift - 1;
|
while(padding >= std::numeric_limits<mp_digit>::digits)
|
padding -= std::numeric_limits<mp_digit>::digits;
|
|
// Create a mask providing the extra bits we need and add to result:
|
tommath_int mask;
|
mask = static_cast<boost::long_long_type>((1u << padding) - 1);
|
eval_left_shift(mask, shift);
|
add(result, mask);
|
}
|
*/
|
inline bool eval_is_zero(const tommath_int& val)
|
{
|
return mp_iszero(&val.data());
|
}
|
inline int eval_get_sign(const tommath_int& val)
|
{
|
#ifdef SIGN
|
return mp_iszero(&val.data()) ? 0 : SIGN(&val.data()) ? -1 : 1;
|
#else
|
return mp_iszero(&val.data()) ? 0 : mp_isneg(&val.data()) ? -1 : 1;
|
#endif
|
}
|
/*
|
template <class A>
|
inline void eval_convert_to(A* result, const tommath_int& val)
|
{
|
*result = boost::lexical_cast<A>(val.str(0, std::ios_base::fmtflags(0)));
|
}
|
inline void eval_convert_to(char* result, const tommath_int& val)
|
{
|
*result = static_cast<char>(boost::lexical_cast<int>(val.str(0, std::ios_base::fmtflags(0))));
|
}
|
inline void eval_convert_to(unsigned char* result, const tommath_int& val)
|
{
|
*result = static_cast<unsigned char>(boost::lexical_cast<unsigned>(val.str(0, std::ios_base::fmtflags(0))));
|
}
|
inline void eval_convert_to(signed char* result, const tommath_int& val)
|
{
|
*result = static_cast<signed char>(boost::lexical_cast<int>(val.str(0, std::ios_base::fmtflags(0))));
|
}
|
*/
|
inline void eval_abs(tommath_int& result, const tommath_int& val)
|
{
|
detail::check_tommath_result(mp_abs(const_cast< ::mp_int*>(&val.data()), &result.data()));
|
}
|
inline void eval_gcd(tommath_int& result, const tommath_int& a, const tommath_int& b)
|
{
|
detail::check_tommath_result(mp_gcd(const_cast< ::mp_int*>(&a.data()), const_cast< ::mp_int*>(&b.data()), const_cast< ::mp_int*>(&result.data())));
|
}
|
inline void eval_lcm(tommath_int& result, const tommath_int& a, const tommath_int& b)
|
{
|
detail::check_tommath_result(mp_lcm(const_cast< ::mp_int*>(&a.data()), const_cast< ::mp_int*>(&b.data()), const_cast< ::mp_int*>(&result.data())));
|
}
|
inline void eval_powm(tommath_int& result, const tommath_int& base, const tommath_int& p, const tommath_int& m)
|
{
|
if (eval_get_sign(p) < 0)
|
{
|
BOOST_THROW_EXCEPTION(std::runtime_error("powm requires a positive exponent."));
|
}
|
detail::check_tommath_result(mp_exptmod(const_cast< ::mp_int*>(&base.data()), const_cast< ::mp_int*>(&p.data()), const_cast< ::mp_int*>(&m.data()), &result.data()));
|
}
|
|
inline void eval_qr(const tommath_int& x, const tommath_int& y,
|
tommath_int& q, tommath_int& r)
|
{
|
detail::check_tommath_result(mp_div(const_cast< ::mp_int*>(&x.data()), const_cast< ::mp_int*>(&y.data()), &q.data(), &r.data()));
|
}
|
|
inline unsigned eval_lsb(const tommath_int& val)
|
{
|
int c = eval_get_sign(val);
|
if (c == 0)
|
{
|
BOOST_THROW_EXCEPTION(std::range_error("No bits were set in the operand."));
|
}
|
if (c < 0)
|
{
|
BOOST_THROW_EXCEPTION(std::range_error("Testing individual bits in negative values is not supported - results are undefined."));
|
}
|
return mp_cnt_lsb(const_cast< ::mp_int*>(&val.data()));
|
}
|
|
inline unsigned eval_msb(const tommath_int& val)
|
{
|
int c = eval_get_sign(val);
|
if (c == 0)
|
{
|
BOOST_THROW_EXCEPTION(std::range_error("No bits were set in the operand."));
|
}
|
if (c < 0)
|
{
|
BOOST_THROW_EXCEPTION(std::range_error("Testing individual bits in negative values is not supported - results are undefined."));
|
}
|
return mp_count_bits(const_cast< ::mp_int*>(&val.data())) - 1;
|
}
|
|
template <class Integer>
|
inline typename enable_if<is_unsigned<Integer>, Integer>::type eval_integer_modulus(const tommath_int& x, Integer val)
|
{
|
#ifdef DIGIT_BIT
|
static const mp_digit m = (static_cast<mp_digit>(1) << DIGIT_BIT) - 1;
|
#else
|
static const mp_digit m = (static_cast<mp_digit>(1) << MP_DIGIT_BIT) - 1;
|
#endif
|
if (val <= m)
|
{
|
mp_digit d;
|
detail::check_tommath_result(mp_mod_d(const_cast< ::mp_int*>(&x.data()), static_cast<mp_digit>(val), &d));
|
return d;
|
}
|
else
|
{
|
return default_ops::eval_integer_modulus(x, val);
|
}
|
}
|
template <class Integer>
|
inline typename enable_if<is_signed<Integer>, Integer>::type eval_integer_modulus(const tommath_int& x, Integer val)
|
{
|
return eval_integer_modulus(x, boost::multiprecision::detail::unsigned_abs(val));
|
}
|
|
inline std::size_t hash_value(const tommath_int& val)
|
{
|
std::size_t result = 0;
|
std::size_t len = val.data().used;
|
for (std::size_t i = 0; i < len; ++i)
|
boost::hash_combine(result, val.data().dp[i]);
|
boost::hash_combine(result, val.data().sign);
|
return result;
|
}
|
|
} // namespace backends
|
|
using boost::multiprecision::backends::tommath_int;
|
|
template <>
|
struct number_category<tommath_int> : public mpl::int_<number_kind_integer>
|
{};
|
|
typedef number<tommath_int> tom_int;
|
typedef rational_adaptor<tommath_int> tommath_rational;
|
typedef number<tommath_rational> tom_rational;
|
}
|
} // namespace boost::multiprecision
|
|
namespace std {
|
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
class numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >
|
{
|
typedef boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> number_type;
|
|
public:
|
BOOST_STATIC_CONSTEXPR bool is_specialized = true;
|
//
|
// Largest and smallest numbers are bounded only by available memory, set
|
// to zero:
|
//
|
static number_type(min)()
|
{
|
return number_type();
|
}
|
static number_type(max)()
|
{
|
return number_type();
|
}
|
static number_type lowest() { return (min)(); }
|
BOOST_STATIC_CONSTEXPR int digits = INT_MAX;
|
BOOST_STATIC_CONSTEXPR int digits10 = (INT_MAX / 1000) * 301L;
|
BOOST_STATIC_CONSTEXPR int max_digits10 = digits10 + 3;
|
BOOST_STATIC_CONSTEXPR bool is_signed = true;
|
BOOST_STATIC_CONSTEXPR bool is_integer = true;
|
BOOST_STATIC_CONSTEXPR bool is_exact = true;
|
BOOST_STATIC_CONSTEXPR int radix = 2;
|
static number_type epsilon() { return number_type(); }
|
static number_type round_error() { return number_type(); }
|
BOOST_STATIC_CONSTEXPR int min_exponent = 0;
|
BOOST_STATIC_CONSTEXPR int min_exponent10 = 0;
|
BOOST_STATIC_CONSTEXPR int max_exponent = 0;
|
BOOST_STATIC_CONSTEXPR int max_exponent10 = 0;
|
BOOST_STATIC_CONSTEXPR bool has_infinity = false;
|
BOOST_STATIC_CONSTEXPR bool has_quiet_NaN = false;
|
BOOST_STATIC_CONSTEXPR bool has_signaling_NaN = false;
|
BOOST_STATIC_CONSTEXPR float_denorm_style has_denorm = denorm_absent;
|
BOOST_STATIC_CONSTEXPR bool has_denorm_loss = false;
|
static number_type infinity() { return number_type(); }
|
static number_type quiet_NaN() { return number_type(); }
|
static number_type signaling_NaN() { return number_type(); }
|
static number_type denorm_min() { return number_type(); }
|
BOOST_STATIC_CONSTEXPR bool is_iec559 = false;
|
BOOST_STATIC_CONSTEXPR bool is_bounded = false;
|
BOOST_STATIC_CONSTEXPR bool is_modulo = false;
|
BOOST_STATIC_CONSTEXPR bool traps = false;
|
BOOST_STATIC_CONSTEXPR bool tinyness_before = false;
|
BOOST_STATIC_CONSTEXPR float_round_style round_style = round_toward_zero;
|
};
|
|
#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
|
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST int numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::digits;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST int numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::digits10;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST int numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::max_digits10;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST bool numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::is_signed;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST bool numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::is_integer;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST bool numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::is_exact;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST int numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::radix;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST int numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::min_exponent;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST int numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::min_exponent10;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST int numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::max_exponent;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST int numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::max_exponent10;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST bool numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::has_infinity;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST bool numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::has_quiet_NaN;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST bool numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::has_signaling_NaN;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST float_denorm_style numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::has_denorm;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST bool numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::has_denorm_loss;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST bool numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::is_iec559;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST bool numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::is_bounded;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST bool numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::is_modulo;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST bool numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::traps;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST bool numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::tinyness_before;
|
template <boost::multiprecision::expression_template_option ExpressionTemplates>
|
BOOST_CONSTEXPR_OR_CONST float_round_style numeric_limits<boost::multiprecision::number<boost::multiprecision::tommath_int, ExpressionTemplates> >::round_style;
|
|
#endif
|
} // namespace std
|
|
#endif
|
