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1 ///////////////////////////////////////////////////////////////////////////////
2 //  Copyright 2015 John Maddock. Distributed under the Boost
3 //  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 <boost/multiprecision/cpp_int.hpp>
7 #include <boost/type_traits/is_nothrow_move_constructible.hpp>
8 #include <boost/type_traits/is_nothrow_move_assignable.hpp>
9 #include <boost/type_traits/has_nothrow_constructor.hpp>
10 #include <boost/type_traits/has_nothrow_assign.hpp>
11 #include <boost/type_traits/has_nothrow_copy.hpp>
12 #include <boost/static_assert.hpp>
13 
14 #ifndef BOOST_NO_CXX11_NOEXCEPT
15 
16 #if !defined(BOOST_NO_CXX11_NOEXCEPT) && !defined(BOOST_NO_SFINAE_EXPR) || defined(BOOST_IS_NOTHROW_MOVE_CONSTRUCT)
17 //
18 // Move construct:
19 //
20 BOOST_STATIC_ASSERT(boost::is_nothrow_move_constructible<boost::multiprecision::cpp_int>::value);
21 BOOST_STATIC_ASSERT(boost::is_nothrow_move_constructible<boost::multiprecision::int128_t>::value);
22 BOOST_STATIC_ASSERT(boost::is_nothrow_move_constructible<boost::multiprecision::checked_int128_t>::value);
23 BOOST_STATIC_ASSERT(boost::is_nothrow_move_constructible<boost::multiprecision::uint128_t>::value);
24 BOOST_STATIC_ASSERT(boost::is_nothrow_move_constructible<boost::multiprecision::checked_uint128_t>::value);
25 BOOST_STATIC_ASSERT(boost::is_nothrow_move_constructible<boost::multiprecision::int512_t>::value);
26 BOOST_STATIC_ASSERT(boost::is_nothrow_move_constructible<boost::multiprecision::checked_int512_t>::value);
27 BOOST_STATIC_ASSERT(boost::is_nothrow_move_constructible<boost::multiprecision::uint512_t>::value);
28 BOOST_STATIC_ASSERT(boost::is_nothrow_move_constructible<boost::multiprecision::checked_uint512_t>::value);
29 
30 #endif
31 
32 #if !defined(BOOST_NO_CXX11_NOEXCEPT) && !defined(BOOST_NO_SFINAE_EXPR) || defined(BOOST_IS_NOTHROW_MOVE_ASSIGN)
33 //
34 // Move assign:
35 //
36 BOOST_STATIC_ASSERT(boost::is_nothrow_move_assignable<boost::multiprecision::cpp_int>::value);
37 BOOST_STATIC_ASSERT(boost::is_nothrow_move_assignable<boost::multiprecision::int128_t>::value);
38 BOOST_STATIC_ASSERT(boost::is_nothrow_move_assignable<boost::multiprecision::checked_int128_t>::value);
39 BOOST_STATIC_ASSERT(boost::is_nothrow_move_assignable<boost::multiprecision::uint128_t>::value);
40 BOOST_STATIC_ASSERT(boost::is_nothrow_move_assignable<boost::multiprecision::checked_uint128_t>::value);
41 BOOST_STATIC_ASSERT(boost::is_nothrow_move_assignable<boost::multiprecision::int512_t>::value);
42 BOOST_STATIC_ASSERT(boost::is_nothrow_move_assignable<boost::multiprecision::checked_int512_t>::value);
43 BOOST_STATIC_ASSERT(boost::is_nothrow_move_assignable<boost::multiprecision::uint512_t>::value);
44 BOOST_STATIC_ASSERT(boost::is_nothrow_move_assignable<boost::multiprecision::checked_uint512_t>::value);
45 
46 #endif
47 
48 //
49 // Construct:
50 //
51 #ifdef BOOST_HAS_NOTHROW_CONSTRUCTOR
52 BOOST_STATIC_ASSERT(boost::has_nothrow_constructor<boost::multiprecision::cpp_int>::value);
53 BOOST_STATIC_ASSERT(boost::has_nothrow_constructor<boost::multiprecision::int128_t>::value);
54 BOOST_STATIC_ASSERT(boost::has_nothrow_constructor<boost::multiprecision::checked_int128_t>::value);
55 BOOST_STATIC_ASSERT(boost::has_nothrow_constructor<boost::multiprecision::uint128_t>::value);
56 BOOST_STATIC_ASSERT(boost::has_nothrow_constructor<boost::multiprecision::checked_uint128_t>::value);
57 BOOST_STATIC_ASSERT(boost::has_nothrow_constructor<boost::multiprecision::int512_t>::value);
58 BOOST_STATIC_ASSERT(boost::has_nothrow_constructor<boost::multiprecision::checked_int512_t>::value);
59 BOOST_STATIC_ASSERT(boost::has_nothrow_constructor<boost::multiprecision::uint512_t>::value);
60 BOOST_STATIC_ASSERT(boost::has_nothrow_constructor<boost::multiprecision::checked_uint512_t>::value);
61 #endif
62 //
63 // Copy construct:
64 //
65 #ifdef BOOST_HAS_NOTHROW_COPY
66 BOOST_STATIC_ASSERT(!boost::has_nothrow_copy<boost::multiprecision::cpp_int>::value);
67 BOOST_STATIC_ASSERT(boost::has_nothrow_copy<boost::multiprecision::int128_t>::value);
68 BOOST_STATIC_ASSERT(boost::has_nothrow_copy<boost::multiprecision::checked_int128_t>::value);
69 BOOST_STATIC_ASSERT(boost::has_nothrow_copy<boost::multiprecision::uint128_t>::value);
70 BOOST_STATIC_ASSERT(boost::has_nothrow_copy<boost::multiprecision::checked_uint128_t>::value);
71 BOOST_STATIC_ASSERT(boost::has_nothrow_copy<boost::multiprecision::int512_t>::value);
72 BOOST_STATIC_ASSERT(boost::has_nothrow_copy<boost::multiprecision::checked_int512_t>::value);
73 BOOST_STATIC_ASSERT(boost::has_nothrow_copy<boost::multiprecision::uint512_t>::value);
74 BOOST_STATIC_ASSERT(boost::has_nothrow_copy<boost::multiprecision::checked_uint512_t>::value);
75 #endif
76 //
77 // Assign:
78 //
79 #ifdef BOOST_HAS_NOTHROW_ASSIGN
80 BOOST_STATIC_ASSERT(!boost::has_nothrow_assign<boost::multiprecision::cpp_int>::value);
81 BOOST_STATIC_ASSERT(boost::has_nothrow_assign<boost::multiprecision::int128_t>::value);
82 BOOST_STATIC_ASSERT(boost::has_nothrow_assign<boost::multiprecision::checked_int128_t>::value);
83 BOOST_STATIC_ASSERT(boost::has_nothrow_assign<boost::multiprecision::uint128_t>::value);
84 BOOST_STATIC_ASSERT(boost::has_nothrow_assign<boost::multiprecision::checked_uint128_t>::value);
85 BOOST_STATIC_ASSERT(boost::has_nothrow_assign<boost::multiprecision::int512_t>::value);
86 BOOST_STATIC_ASSERT(boost::has_nothrow_assign<boost::multiprecision::checked_int512_t>::value);
87 BOOST_STATIC_ASSERT(boost::has_nothrow_assign<boost::multiprecision::uint512_t>::value);
88 BOOST_STATIC_ASSERT(boost::has_nothrow_assign<boost::multiprecision::checked_uint512_t>::value);
89 #endif
90 //
91 // Construct from int:
92 //
93 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::cpp_int(std::declval<boost::multiprecision::signed_limb_type>())));
94 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::int128_t(std::declval<boost::multiprecision::signed_limb_type>())));
95 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::checked_int128_t(std::declval<boost::multiprecision::signed_limb_type>())));
96 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::uint128_t(std::declval<boost::multiprecision::signed_limb_type>())));
97 BOOST_STATIC_ASSERT(!noexcept(boost::multiprecision::checked_uint128_t(std::declval<boost::multiprecision::signed_limb_type>())));
98 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::int512_t(std::declval<boost::multiprecision::signed_limb_type>())));
99 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::checked_int512_t(std::declval<boost::multiprecision::signed_limb_type>())));
100 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::uint512_t(std::declval<boost::multiprecision::signed_limb_type>())));
101 BOOST_STATIC_ASSERT(!noexcept(boost::multiprecision::checked_uint512_t(std::declval<boost::multiprecision::signed_limb_type>())));
102 //
103 // Construct from unsigned int:
104 //
105 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::cpp_int(std::declval<boost::multiprecision::limb_type>())));
106 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::int128_t(std::declval<boost::multiprecision::limb_type>())));
107 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::checked_int128_t(std::declval<boost::multiprecision::limb_type>())));
108 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::uint128_t(std::declval<boost::multiprecision::limb_type>())));
109 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::checked_uint128_t(std::declval<boost::multiprecision::limb_type>())));
110 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::int512_t(std::declval<boost::multiprecision::limb_type>())));
111 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::checked_int512_t(std::declval<boost::multiprecision::limb_type>())));
112 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::uint512_t(std::declval<boost::multiprecision::limb_type>())));
113 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::checked_uint512_t(std::declval<boost::multiprecision::limb_type>())));
114 //
115 // Assign from int:
116 //
117 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::cpp_int>() = std::declval<boost::multiprecision::signed_limb_type>()));
118 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::int128_t>() = std::declval<boost::multiprecision::signed_limb_type>()));
119 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::checked_int128_t>() = std::declval<boost::multiprecision::signed_limb_type>()));
120 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::uint128_t>() = std::declval<boost::multiprecision::signed_limb_type>()));
121 BOOST_STATIC_ASSERT(!noexcept(std::declval<boost::multiprecision::checked_uint128_t>() = std::declval<boost::multiprecision::signed_limb_type>()));
122 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::int512_t>() = std::declval<boost::multiprecision::signed_limb_type>()));
123 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::checked_int512_t>() = std::declval<boost::multiprecision::signed_limb_type>()));
124 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::uint512_t>() = std::declval<boost::multiprecision::signed_limb_type>()));
125 BOOST_STATIC_ASSERT(!noexcept(std::declval<boost::multiprecision::checked_uint512_t>() = std::declval<boost::multiprecision::signed_limb_type>()));
126 //
127 // Assign from unsigned int:
128 //
129 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::cpp_int>() = std::declval<boost::multiprecision::limb_type>()));
130 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::int128_t>() = std::declval<boost::multiprecision::limb_type>()));
131 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::checked_int128_t>() = std::declval<boost::multiprecision::limb_type>()));
132 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::uint128_t>() = std::declval<boost::multiprecision::limb_type>()));
133 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::checked_uint128_t>() = std::declval<boost::multiprecision::limb_type>()));
134 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::int512_t>() = std::declval<boost::multiprecision::limb_type>()));
135 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::checked_int512_t>() = std::declval<boost::multiprecision::limb_type>()));
136 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::uint512_t>() = std::declval<boost::multiprecision::limb_type>()));
137 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::checked_uint512_t>() = std::declval<boost::multiprecision::limb_type>()));
138 
139 #if defined(BOOST_LITTLE_ENDIAN) && !defined(BOOST_MP_TEST_NO_LE)
140 //
141 // We can also nothrow construct from a double_limb_type (or smaller obviously) as long as double_limb_type is smaller than the type
142 // in question (so don't test 128-bit integers in case double_limb_type is __int128).
143 //
144 // Construct from int:
145 //
146 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::cpp_int(std::declval<boost::multiprecision::signed_double_limb_type>())));
147 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::int512_t(std::declval<boost::multiprecision::signed_double_limb_type>())));
148 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::checked_int512_t(std::declval<boost::multiprecision::signed_double_limb_type>())));
149 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::uint512_t(std::declval<boost::multiprecision::signed_double_limb_type>())));
150 BOOST_STATIC_ASSERT(!noexcept(boost::multiprecision::checked_uint512_t(std::declval<boost::multiprecision::signed_double_limb_type>())));
151 //
152 // Construct from unsigned int:
153 //
154 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::cpp_int(std::declval<boost::multiprecision::double_limb_type>())));
155 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::int512_t(std::declval<boost::multiprecision::double_limb_type>())));
156 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::checked_int512_t(std::declval<boost::multiprecision::double_limb_type>())));
157 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::uint512_t(std::declval<boost::multiprecision::double_limb_type>())));
158 BOOST_STATIC_ASSERT(noexcept(boost::multiprecision::checked_uint512_t(std::declval<boost::multiprecision::double_limb_type>())));
159 //
160 // Assign from int:
161 //
162 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::cpp_int>() = std::declval<boost::multiprecision::signed_double_limb_type>()));
163 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::int512_t>() = std::declval<boost::multiprecision::signed_double_limb_type>()));
164 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::checked_int512_t>() = std::declval<boost::multiprecision::signed_double_limb_type>()));
165 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::uint512_t>() = std::declval<boost::multiprecision::signed_double_limb_type>()));
166 BOOST_STATIC_ASSERT(!noexcept(std::declval<boost::multiprecision::checked_uint512_t>() = std::declval<boost::multiprecision::signed_double_limb_type>()));
167 //
168 // Assign from unsigned int:
169 //
170 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::cpp_int>() = std::declval<boost::multiprecision::double_limb_type>()));
171 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::int512_t>() = std::declval<boost::multiprecision::double_limb_type>()));
172 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::checked_int512_t>() = std::declval<boost::multiprecision::double_limb_type>()));
173 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::uint512_t>() = std::declval<boost::multiprecision::double_limb_type>()));
174 BOOST_STATIC_ASSERT(noexcept(std::declval<boost::multiprecision::checked_uint512_t>() = std::declval<boost::multiprecision::double_limb_type>()));
175 
176 #endif // little endian
177 
178 typedef boost::multiprecision::number<boost::multiprecision::cpp_int_backend<32, 32, boost::multiprecision::signed_magnitude, boost::multiprecision::checked, void> >     checked_int32_t;
179 typedef boost::multiprecision::number<boost::multiprecision::cpp_int_backend<32, 32, boost::multiprecision::unsigned_magnitude, boost::multiprecision::checked, void> >   checked_uint32_t;
180 typedef boost::multiprecision::number<boost::multiprecision::cpp_int_backend<32, 32, boost::multiprecision::signed_magnitude, boost::multiprecision::unchecked, void> >   unchecked_int32_t;
181 typedef boost::multiprecision::number<boost::multiprecision::cpp_int_backend<32, 32, boost::multiprecision::unsigned_magnitude, boost::multiprecision::unchecked, void> > unchecked_uint32_t;
182 
183 //
184 // Construct from int:
185 //
186 BOOST_STATIC_ASSERT(noexcept(unchecked_int32_t(std::declval<boost::int32_t>())));
187 BOOST_STATIC_ASSERT(noexcept(checked_int32_t(std::declval<boost::int32_t>())));
188 BOOST_STATIC_ASSERT(noexcept(unchecked_uint32_t(std::declval<boost::int32_t>())));
189 BOOST_STATIC_ASSERT(!noexcept(checked_uint32_t(std::declval<boost::int32_t>())));
190 //
191 // Construct from unsigned int:
192 //
193 BOOST_STATIC_ASSERT(noexcept(unchecked_int32_t(std::declval<boost::uint32_t>())));
194 BOOST_STATIC_ASSERT(noexcept(checked_int32_t(std::declval<boost::uint32_t>())));
195 BOOST_STATIC_ASSERT(noexcept(unchecked_uint32_t(std::declval<boost::uint32_t>())));
196 BOOST_STATIC_ASSERT(noexcept(checked_uint32_t(std::declval<boost::uint32_t>())));
197 //
198 // Assign from int:
199 //
200 BOOST_STATIC_ASSERT(noexcept(std::declval<unchecked_int32_t>() = std::declval<boost::int32_t>()));
201 BOOST_STATIC_ASSERT(noexcept(std::declval<checked_int32_t>() = std::declval<boost::int32_t>()));
202 BOOST_STATIC_ASSERT(noexcept(std::declval<unchecked_uint32_t>() = std::declval<boost::int32_t>()));
203 BOOST_STATIC_ASSERT(!noexcept(std::declval<checked_uint32_t>() = std::declval<boost::int32_t>()));
204 //
205 // Assign from unsigned int:
206 //
207 BOOST_STATIC_ASSERT(noexcept(std::declval<unchecked_int32_t>() = std::declval<boost::uint32_t>()));
208 BOOST_STATIC_ASSERT(noexcept(std::declval<checked_int32_t>() = std::declval<boost::uint32_t>()));
209 BOOST_STATIC_ASSERT(noexcept(std::declval<unchecked_uint32_t>() = std::declval<boost::uint32_t>()));
210 BOOST_STATIC_ASSERT(noexcept(std::declval<checked_uint32_t>() = std::declval<boost::uint32_t>()));
211 
212 //
213 // And finally some things which should *not* be noexcept:
214 //
215 typedef boost::multiprecision::number<boost::multiprecision::cpp_int_backend<30, 30, boost::multiprecision::signed_magnitude, boost::multiprecision::checked, void> >     checked_int30_t;
216 typedef boost::multiprecision::number<boost::multiprecision::cpp_int_backend<30, 30, boost::multiprecision::unsigned_magnitude, boost::multiprecision::checked, void> >   checked_uint30_t;
217 typedef boost::multiprecision::number<boost::multiprecision::cpp_int_backend<30, 30, boost::multiprecision::signed_magnitude, boost::multiprecision::unchecked, void> >   unchecked_int30_t;
218 typedef boost::multiprecision::number<boost::multiprecision::cpp_int_backend<30, 30, boost::multiprecision::unsigned_magnitude, boost::multiprecision::unchecked, void> > unchecked_uint30_t;
219 
220 //
221 // Construct from int:
222 //
223 BOOST_STATIC_ASSERT(!noexcept(checked_int30_t(std::declval<boost::int32_t>())));
224 BOOST_STATIC_ASSERT(!noexcept(checked_uint30_t(std::declval<boost::int32_t>())));
225 BOOST_STATIC_ASSERT(!noexcept(checked_int32_t(std::declval<boost::int64_t>())));
226 BOOST_STATIC_ASSERT(!noexcept(checked_uint32_t(std::declval<boost::int64_t>())));
227 //
228 // Construct from unsigned int:
229 //
230 BOOST_STATIC_ASSERT(!noexcept(checked_int30_t(std::declval<boost::uint32_t>())));
231 BOOST_STATIC_ASSERT(!noexcept(checked_uint30_t(std::declval<boost::uint32_t>())));
232 BOOST_STATIC_ASSERT(!noexcept(checked_int32_t(std::declval<boost::uint64_t>())));
233 BOOST_STATIC_ASSERT(!noexcept(checked_uint32_t(std::declval<boost::uint64_t>())));
234 //
235 // Assign from int:
236 //
237 BOOST_STATIC_ASSERT(!noexcept(std::declval<checked_int30_t>() = std::declval<boost::int32_t>()));
238 BOOST_STATIC_ASSERT(!noexcept(std::declval<checked_uint30_t>() = std::declval<boost::int32_t>()));
239 BOOST_STATIC_ASSERT(!noexcept(std::declval<checked_int32_t>() = std::declval<boost::int64_t>()));
240 BOOST_STATIC_ASSERT(!noexcept(std::declval<checked_uint32_t>() = std::declval<boost::int64_t>()));
241 //
242 // Assign from unsigned int:
243 //
244 BOOST_STATIC_ASSERT(!noexcept(std::declval<checked_int30_t>() = std::declval<boost::uint32_t>()));
245 BOOST_STATIC_ASSERT(!noexcept(std::declval<checked_uint30_t>() = std::declval<boost::uint32_t>()));
246 BOOST_STATIC_ASSERT(!noexcept(std::declval<checked_int32_t>() = std::declval<boost::uint64_t>()));
247 BOOST_STATIC_ASSERT(!noexcept(std::declval<checked_uint32_t>() = std::declval<boost::uint64_t>()));
248 
249 #endif // noexcept
250