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 // <iterator> 11 12 // reverse_iterator 13 14 // requires RandomAccessIterator<Iter> 15 // reverse_iterator& operator+=(difference_type n); 16 17 #include <iterator> 18 #include <cassert> 19 20 #include "test_iterators.h" 21 22 template <class It> 23 void 24 test(It i, typename std::iterator_traits<It>::difference_type n, It x) 25 { 26 std::reverse_iterator<It> r(i); 27 std::reverse_iterator<It>& rr = r += n; 28 assert(r.base() == x); 29 assert(&rr == &r); 30 } 31 32 int main() 33 { 34 const char* s = "1234567890"; 35 test(random_access_iterator<const char*>(s+5), 5, random_access_iterator<const char*>(s)); 36 test(s+5, 5, s); 37 } 38
