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      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 Iter1, InputIterator Iter2>
     13 //   requires HasEqualTo<Iter1::value_type, Iter2::value_type>
     14 //   pair<Iter1, Iter2>
     15 //   mismatch(Iter1 first1, Iter1 last1, Iter2 first2);
     16 
     17 #include <algorithm>
     18 #include <cassert>
     19 
     20 #include "test_macros.h"
     21 #include "test_iterators.h"
     22 
     23 
     24 int main()
     25 {
     26     int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
     27     const unsigned sa = sizeof(ia)/sizeof(ia[0]);
     28     int ib[] = {0, 1, 2, 3, 0, 1, 2, 3};
     29     const unsigned sb = sizeof(ib)/sizeof(ib[0]); ((void)sb); // unused in c++11
     30 
     31     typedef input_iterator<const int*> II;
     32     typedef random_access_iterator<const int*>  RAI;
     33 
     34     assert(std::mismatch(II(ia), II(ia + sa), II(ib))
     35             == (std::pair<II, II>(II(ia+3), II(ib+3))));
     36 
     37     assert(std::mismatch(RAI(ia), RAI(ia + sa), RAI(ib))
     38             == (std::pair<RAI, RAI>(RAI(ia+3), RAI(ib+3))));
     39 
     40 #if TEST_STD_VER > 11 // We have the four iteration version
     41     assert(std::mismatch(II(ia), II(ia + sa), II(ib), II(ib+sb))
     42             == (std::pair<II, II>(II(ia+3), II(ib+3))));
     43 
     44     assert(std::mismatch(RAI(ia), RAI(ia + sa), RAI(ib), RAI(ib+sb))
     45             == (std::pair<RAI, RAI>(RAI(ia+3), RAI(ib+3))));
     46 
     47 
     48     assert(std::mismatch(II(ia), II(ia + sa), II(ib), II(ib+2))
     49             == (std::pair<II, II>(II(ia+2), II(ib+2))));
     50 #endif
     51 }
     52