1 // -*- C++ -*-
2 //===----------------------------------------------------------------------===//
3 //
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #ifndef _LIBCPP___FUNCTIONAL_OPERATIONS_H
11 #define _LIBCPP___FUNCTIONAL_OPERATIONS_H
12 
13 #include <__config>
14 #include <__functional/binary_function.h>
15 #include <__functional/unary_function.h>
16 #include <__utility/forward.h>
17 
18 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
19 #  pragma GCC system_header
20 #endif
21 
22 _LIBCPP_BEGIN_NAMESPACE_STD
23 
24 // Arithmetic operations
25 
26 #if _LIBCPP_STD_VER > 11
27 template <class _Tp = void>
28 #else
29 template <class _Tp>
30 #endif
31 struct _LIBCPP_TEMPLATE_VIS plus
32     : __binary_function<_Tp, _Tp, _Tp>
33 {
34     typedef _Tp __result_type;  // used by valarray
35     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
36     _Tp operator()(const _Tp& __x, const _Tp& __y) const
37         {return __x + __y;}
38 };
39 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(plus);
40 
41 #if _LIBCPP_STD_VER > 11
42 template <>
43 struct _LIBCPP_TEMPLATE_VIS plus<void>
44 {
45     template <class _T1, class _T2>
46     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
47     auto operator()(_T1&& __t, _T2&& __u) const
48         noexcept(noexcept(_VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u)))
49         -> decltype(      _VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u))
50         { return          _VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u); }
51     typedef void is_transparent;
52 };
53 #endif
54 
55 #if _LIBCPP_STD_VER > 11
56 template <class _Tp = void>
57 #else
58 template <class _Tp>
59 #endif
60 struct _LIBCPP_TEMPLATE_VIS minus
61     : __binary_function<_Tp, _Tp, _Tp>
62 {
63     typedef _Tp __result_type;  // used by valarray
64     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
65     _Tp operator()(const _Tp& __x, const _Tp& __y) const
66         {return __x - __y;}
67 };
68 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(minus);
69 
70 #if _LIBCPP_STD_VER > 11
71 template <>
72 struct _LIBCPP_TEMPLATE_VIS minus<void>
73 {
74     template <class _T1, class _T2>
75     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
76     auto operator()(_T1&& __t, _T2&& __u) const
77         noexcept(noexcept(_VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u)))
78         -> decltype(      _VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u))
79         { return          _VSTD::forward<_T1>(__t) - _VSTD::forward<_T2>(__u); }
80     typedef void is_transparent;
81 };
82 #endif
83 
84 #if _LIBCPP_STD_VER > 11
85 template <class _Tp = void>
86 #else
87 template <class _Tp>
88 #endif
89 struct _LIBCPP_TEMPLATE_VIS multiplies
90     : __binary_function<_Tp, _Tp, _Tp>
91 {
92     typedef _Tp __result_type;  // used by valarray
93     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
94     _Tp operator()(const _Tp& __x, const _Tp& __y) const
95         {return __x * __y;}
96 };
97 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(multiplies);
98 
99 #if _LIBCPP_STD_VER > 11
100 template <>
101 struct _LIBCPP_TEMPLATE_VIS multiplies<void>
102 {
103     template <class _T1, class _T2>
104     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
105     auto operator()(_T1&& __t, _T2&& __u) const
106         noexcept(noexcept(_VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u)))
107         -> decltype(      _VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u))
108         { return          _VSTD::forward<_T1>(__t) * _VSTD::forward<_T2>(__u); }
109     typedef void is_transparent;
110 };
111 #endif
112 
113 #if _LIBCPP_STD_VER > 11
114 template <class _Tp = void>
115 #else
116 template <class _Tp>
117 #endif
118 struct _LIBCPP_TEMPLATE_VIS divides
119     : __binary_function<_Tp, _Tp, _Tp>
120 {
121     typedef _Tp __result_type;  // used by valarray
122     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
123     _Tp operator()(const _Tp& __x, const _Tp& __y) const
124         {return __x / __y;}
125 };
126 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(divides);
127 
128 #if _LIBCPP_STD_VER > 11
129 template <>
130 struct _LIBCPP_TEMPLATE_VIS divides<void>
131 {
132     template <class _T1, class _T2>
133     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
134     auto operator()(_T1&& __t, _T2&& __u) const
135         noexcept(noexcept(_VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u)))
136         -> decltype(      _VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u))
137         { return          _VSTD::forward<_T1>(__t) / _VSTD::forward<_T2>(__u); }
138     typedef void is_transparent;
139 };
140 #endif
141 
142 #if _LIBCPP_STD_VER > 11
143 template <class _Tp = void>
144 #else
145 template <class _Tp>
146 #endif
147 struct _LIBCPP_TEMPLATE_VIS modulus
148     : __binary_function<_Tp, _Tp, _Tp>
149 {
150     typedef _Tp __result_type;  // used by valarray
151     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
152     _Tp operator()(const _Tp& __x, const _Tp& __y) const
153         {return __x % __y;}
154 };
155 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(modulus);
156 
157 #if _LIBCPP_STD_VER > 11
158 template <>
159 struct _LIBCPP_TEMPLATE_VIS modulus<void>
160 {
161     template <class _T1, class _T2>
162     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
163     auto operator()(_T1&& __t, _T2&& __u) const
164         noexcept(noexcept(_VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u)))
165         -> decltype(      _VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u))
166         { return          _VSTD::forward<_T1>(__t) % _VSTD::forward<_T2>(__u); }
167     typedef void is_transparent;
168 };
169 #endif
170 
171 #if _LIBCPP_STD_VER > 11
172 template <class _Tp = void>
173 #else
174 template <class _Tp>
175 #endif
176 struct _LIBCPP_TEMPLATE_VIS negate
177     : __unary_function<_Tp, _Tp>
178 {
179     typedef _Tp __result_type;  // used by valarray
180     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
181     _Tp operator()(const _Tp& __x) const
182         {return -__x;}
183 };
184 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(negate);
185 
186 #if _LIBCPP_STD_VER > 11
187 template <>
188 struct _LIBCPP_TEMPLATE_VIS negate<void>
189 {
190     template <class _Tp>
191     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
192     auto operator()(_Tp&& __x) const
193         noexcept(noexcept(- _VSTD::forward<_Tp>(__x)))
194         -> decltype(      - _VSTD::forward<_Tp>(__x))
195         { return          - _VSTD::forward<_Tp>(__x); }
196     typedef void is_transparent;
197 };
198 #endif
199 
200 // Bitwise operations
201 
202 #if _LIBCPP_STD_VER > 11
203 template <class _Tp = void>
204 #else
205 template <class _Tp>
206 #endif
207 struct _LIBCPP_TEMPLATE_VIS bit_and
208     : __binary_function<_Tp, _Tp, _Tp>
209 {
210     typedef _Tp __result_type;  // used by valarray
211     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
212     _Tp operator()(const _Tp& __x, const _Tp& __y) const
213         {return __x & __y;}
214 };
215 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(bit_and);
216 
217 #if _LIBCPP_STD_VER > 11
218 template <>
219 struct _LIBCPP_TEMPLATE_VIS bit_and<void>
220 {
221     template <class _T1, class _T2>
222     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
223     auto operator()(_T1&& __t, _T2&& __u) const
224         noexcept(noexcept(_VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u)))
225         -> decltype(      _VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u))
226         { return          _VSTD::forward<_T1>(__t) & _VSTD::forward<_T2>(__u); }
227     typedef void is_transparent;
228 };
229 #endif
230 
231 #if _LIBCPP_STD_VER > 11
232 template <class _Tp = void>
233 struct _LIBCPP_TEMPLATE_VIS bit_not
234     : __unary_function<_Tp, _Tp>
235 {
236     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
237     _Tp operator()(const _Tp& __x) const
238         {return ~__x;}
239 };
240 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(bit_not);
241 
242 template <>
243 struct _LIBCPP_TEMPLATE_VIS bit_not<void>
244 {
245     template <class _Tp>
246     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
247     auto operator()(_Tp&& __x) const
248         noexcept(noexcept(~_VSTD::forward<_Tp>(__x)))
249         -> decltype(      ~_VSTD::forward<_Tp>(__x))
250         { return          ~_VSTD::forward<_Tp>(__x); }
251     typedef void is_transparent;
252 };
253 #endif
254 
255 #if _LIBCPP_STD_VER > 11
256 template <class _Tp = void>
257 #else
258 template <class _Tp>
259 #endif
260 struct _LIBCPP_TEMPLATE_VIS bit_or
261     : __binary_function<_Tp, _Tp, _Tp>
262 {
263     typedef _Tp __result_type;  // used by valarray
264     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
265     _Tp operator()(const _Tp& __x, const _Tp& __y) const
266         {return __x | __y;}
267 };
268 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(bit_or);
269 
270 #if _LIBCPP_STD_VER > 11
271 template <>
272 struct _LIBCPP_TEMPLATE_VIS bit_or<void>
273 {
274     template <class _T1, class _T2>
275     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
276     auto operator()(_T1&& __t, _T2&& __u) const
277         noexcept(noexcept(_VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u)))
278         -> decltype(      _VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u))
279         { return          _VSTD::forward<_T1>(__t) | _VSTD::forward<_T2>(__u); }
280     typedef void is_transparent;
281 };
282 #endif
283 
284 #if _LIBCPP_STD_VER > 11
285 template <class _Tp = void>
286 #else
287 template <class _Tp>
288 #endif
289 struct _LIBCPP_TEMPLATE_VIS bit_xor
290     : __binary_function<_Tp, _Tp, _Tp>
291 {
292     typedef _Tp __result_type;  // used by valarray
293     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
294     _Tp operator()(const _Tp& __x, const _Tp& __y) const
295         {return __x ^ __y;}
296 };
297 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(bit_xor);
298 
299 #if _LIBCPP_STD_VER > 11
300 template <>
301 struct _LIBCPP_TEMPLATE_VIS bit_xor<void>
302 {
303     template <class _T1, class _T2>
304     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
305     auto operator()(_T1&& __t, _T2&& __u) const
306         noexcept(noexcept(_VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u)))
307         -> decltype(      _VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u))
308         { return          _VSTD::forward<_T1>(__t) ^ _VSTD::forward<_T2>(__u); }
309     typedef void is_transparent;
310 };
311 #endif
312 
313 // Comparison operations
314 
315 #if _LIBCPP_STD_VER > 11
316 template <class _Tp = void>
317 #else
318 template <class _Tp>
319 #endif
320 struct _LIBCPP_TEMPLATE_VIS equal_to
321     : __binary_function<_Tp, _Tp, bool>
322 {
323     typedef bool __result_type;  // used by valarray
324     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
325     bool operator()(const _Tp& __x, const _Tp& __y) const
326         {return __x == __y;}
327 };
328 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(equal_to);
329 
330 #if _LIBCPP_STD_VER > 11
331 template <>
332 struct _LIBCPP_TEMPLATE_VIS equal_to<void>
333 {
334     template <class _T1, class _T2>
335     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
336     auto operator()(_T1&& __t, _T2&& __u) const
337         noexcept(noexcept(_VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u)))
338         -> decltype(      _VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u))
339         { return          _VSTD::forward<_T1>(__t) == _VSTD::forward<_T2>(__u); }
340     typedef void is_transparent;
341 };
342 #endif
343 
344 #if _LIBCPP_STD_VER > 11
345 template <class _Tp = void>
346 #else
347 template <class _Tp>
348 #endif
349 struct _LIBCPP_TEMPLATE_VIS not_equal_to
350     : __binary_function<_Tp, _Tp, bool>
351 {
352     typedef bool __result_type;  // used by valarray
353     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
354     bool operator()(const _Tp& __x, const _Tp& __y) const
355         {return __x != __y;}
356 };
357 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(not_equal_to);
358 
359 #if _LIBCPP_STD_VER > 11
360 template <>
361 struct _LIBCPP_TEMPLATE_VIS not_equal_to<void>
362 {
363     template <class _T1, class _T2>
364     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
365     auto operator()(_T1&& __t, _T2&& __u) const
366         noexcept(noexcept(_VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u)))
367         -> decltype(      _VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u))
368         { return          _VSTD::forward<_T1>(__t) != _VSTD::forward<_T2>(__u); }
369     typedef void is_transparent;
370 };
371 #endif
372 
373 #if _LIBCPP_STD_VER > 11
374 template <class _Tp = void>
375 #else
376 template <class _Tp>
377 #endif
378 struct _LIBCPP_TEMPLATE_VIS less
379     : __binary_function<_Tp, _Tp, bool>
380 {
381     typedef bool __result_type;  // used by valarray
382     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
383     bool operator()(const _Tp& __x, const _Tp& __y) const
384         {return __x < __y;}
385 };
386 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(less);
387 
388 #if _LIBCPP_STD_VER > 11
389 template <>
390 struct _LIBCPP_TEMPLATE_VIS less<void>
391 {
392     template <class _T1, class _T2>
393     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
394     auto operator()(_T1&& __t, _T2&& __u) const
395         noexcept(noexcept(_VSTD::forward<_T1>(__t) < _VSTD::forward<_T2>(__u)))
396         -> decltype(      _VSTD::forward<_T1>(__t) < _VSTD::forward<_T2>(__u))
397         { return          _VSTD::forward<_T1>(__t) < _VSTD::forward<_T2>(__u); }
398     typedef void is_transparent;
399 };
400 #endif
401 
402 #if _LIBCPP_STD_VER > 11
403 template <class _Tp = void>
404 #else
405 template <class _Tp>
406 #endif
407 struct _LIBCPP_TEMPLATE_VIS less_equal
408     : __binary_function<_Tp, _Tp, bool>
409 {
410     typedef bool __result_type;  // used by valarray
411     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
412     bool operator()(const _Tp& __x, const _Tp& __y) const
413         {return __x <= __y;}
414 };
415 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(less_equal);
416 
417 #if _LIBCPP_STD_VER > 11
418 template <>
419 struct _LIBCPP_TEMPLATE_VIS less_equal<void>
420 {
421     template <class _T1, class _T2>
422     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
423     auto operator()(_T1&& __t, _T2&& __u) const
424         noexcept(noexcept(_VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u)))
425         -> decltype(      _VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u))
426         { return          _VSTD::forward<_T1>(__t) <= _VSTD::forward<_T2>(__u); }
427     typedef void is_transparent;
428 };
429 #endif
430 
431 #if _LIBCPP_STD_VER > 11
432 template <class _Tp = void>
433 #else
434 template <class _Tp>
435 #endif
436 struct _LIBCPP_TEMPLATE_VIS greater_equal
437     : __binary_function<_Tp, _Tp, bool>
438 {
439     typedef bool __result_type;  // used by valarray
440     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
441     bool operator()(const _Tp& __x, const _Tp& __y) const
442         {return __x >= __y;}
443 };
444 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(greater_equal);
445 
446 #if _LIBCPP_STD_VER > 11
447 template <>
448 struct _LIBCPP_TEMPLATE_VIS greater_equal<void>
449 {
450     template <class _T1, class _T2>
451     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
452     auto operator()(_T1&& __t, _T2&& __u) const
453         noexcept(noexcept(_VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u)))
454         -> decltype(      _VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u))
455         { return          _VSTD::forward<_T1>(__t) >= _VSTD::forward<_T2>(__u); }
456     typedef void is_transparent;
457 };
458 #endif
459 
460 #if _LIBCPP_STD_VER > 11
461 template <class _Tp = void>
462 #else
463 template <class _Tp>
464 #endif
465 struct _LIBCPP_TEMPLATE_VIS greater
466     : __binary_function<_Tp, _Tp, bool>
467 {
468     typedef bool __result_type;  // used by valarray
469     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
470     bool operator()(const _Tp& __x, const _Tp& __y) const
471         {return __x > __y;}
472 };
473 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(greater);
474 
475 #if _LIBCPP_STD_VER > 11
476 template <>
477 struct _LIBCPP_TEMPLATE_VIS greater<void>
478 {
479     template <class _T1, class _T2>
480     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
481     auto operator()(_T1&& __t, _T2&& __u) const
482         noexcept(noexcept(_VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u)))
483         -> decltype(      _VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u))
484         { return          _VSTD::forward<_T1>(__t) > _VSTD::forward<_T2>(__u); }
485     typedef void is_transparent;
486 };
487 #endif
488 
489 // Logical operations
490 
491 #if _LIBCPP_STD_VER > 11
492 template <class _Tp = void>
493 #else
494 template <class _Tp>
495 #endif
496 struct _LIBCPP_TEMPLATE_VIS logical_and
497     : __binary_function<_Tp, _Tp, bool>
498 {
499     typedef bool __result_type;  // used by valarray
500     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
501     bool operator()(const _Tp& __x, const _Tp& __y) const
502         {return __x && __y;}
503 };
504 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(logical_and);
505 
506 #if _LIBCPP_STD_VER > 11
507 template <>
508 struct _LIBCPP_TEMPLATE_VIS logical_and<void>
509 {
510     template <class _T1, class _T2>
511     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
512     auto operator()(_T1&& __t, _T2&& __u) const
513         noexcept(noexcept(_VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u)))
514         -> decltype(      _VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u))
515         { return          _VSTD::forward<_T1>(__t) && _VSTD::forward<_T2>(__u); }
516     typedef void is_transparent;
517 };
518 #endif
519 
520 #if _LIBCPP_STD_VER > 11
521 template <class _Tp = void>
522 #else
523 template <class _Tp>
524 #endif
525 struct _LIBCPP_TEMPLATE_VIS logical_not
526     : __unary_function<_Tp, bool>
527 {
528     typedef bool __result_type;  // used by valarray
529     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
530     bool operator()(const _Tp& __x) const
531         {return !__x;}
532 };
533 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(logical_not);
534 
535 #if _LIBCPP_STD_VER > 11
536 template <>
537 struct _LIBCPP_TEMPLATE_VIS logical_not<void>
538 {
539     template <class _Tp>
540     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
541     auto operator()(_Tp&& __x) const
542         noexcept(noexcept(!_VSTD::forward<_Tp>(__x)))
543         -> decltype(      !_VSTD::forward<_Tp>(__x))
544         { return          !_VSTD::forward<_Tp>(__x); }
545     typedef void is_transparent;
546 };
547 #endif
548 
549 #if _LIBCPP_STD_VER > 11
550 template <class _Tp = void>
551 #else
552 template <class _Tp>
553 #endif
554 struct _LIBCPP_TEMPLATE_VIS logical_or
555     : __binary_function<_Tp, _Tp, bool>
556 {
557     typedef bool __result_type;  // used by valarray
558     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
559     bool operator()(const _Tp& __x, const _Tp& __y) const
560         {return __x || __y;}
561 };
562 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(logical_or);
563 
564 #if _LIBCPP_STD_VER > 11
565 template <>
566 struct _LIBCPP_TEMPLATE_VIS logical_or<void>
567 {
568     template <class _T1, class _T2>
569     _LIBCPP_CONSTEXPR_SINCE_CXX14 _LIBCPP_INLINE_VISIBILITY
570     auto operator()(_T1&& __t, _T2&& __u) const
571         noexcept(noexcept(_VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u)))
572         -> decltype(      _VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u))
573         { return          _VSTD::forward<_T1>(__t) || _VSTD::forward<_T2>(__u); }
574     typedef void is_transparent;
575 };
576 #endif
577 
578 _LIBCPP_END_NAMESPACE_STD
579 
580 #endif // _LIBCPP___FUNCTIONAL_OPERATIONS_H
581