xref: /llvm-project/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/find_if_not.pass.cpp (revision 4159db7698d3d6aa5e0f2d920be3847716b05800)
1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <algorithm>
11 
12 // template<InputIterator Iter, Predicate<auto, Iter::value_type> Pred>
13 //   requires CopyConstructible<Pred>
14 //   Iter
15 //   find_if_not(Iter first, Iter last, Pred pred);
16 
17 #include <algorithm>
18 #include <functional>
19 #include <cassert>
20 
21 #include "test_iterators.h"
22 
23 struct ne {
24     ne (int val) : v(val) {}
25     bool operator () (int v2) const { return v != v2; }
26     int v;
27     };
28 
29 
30 int main()
31 {
32     int ia[] = {0, 1, 2, 3, 4, 5};
33     const unsigned s = sizeof(ia)/sizeof(ia[0]);
34     input_iterator<const int*> r = std::find_if_not(input_iterator<const int*>(ia),
35                                                     input_iterator<const int*>(ia+s),
36                                                     ne(3));
37     assert(*r == 3);
38     r = std::find_if_not(input_iterator<const int*>(ia),
39                          input_iterator<const int*>(ia+s),
40                          ne(10));
41     assert(r == input_iterator<const int*>(ia+s));
42 }
43