difference_type.pass.cpp revision f5256e16dfc425c1d466f6308d4026d529ce9e0b
1674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen//===----------------------------------------------------------------------===// 2674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen// 3674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen// The LLVM Compiler Infrastructure 4674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen// 5674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen// This file is distributed under the University of Illinois Open Source 6674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen// License. See LICENSE.TXT for details. 7674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen// 8674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen//===----------------------------------------------------------------------===// 9674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen 10674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen// <iterator> 11674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen 12674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen// reverse_iterator 13674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen 14674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen// requires RandomAccessIterator<Iter> 15674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen// reverse_iterator operator+(difference_type n) const; 16674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen 17674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen#include <iterator> 18674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen#include <cassert> 19674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen 20674060f01e9090cd21b3c5656cc3204912ad17a6Jon Boekenoogen#include "../../../../iterators.h" 21 22template <class It> 23void 24test(It i, typename std::iterator_traits<It>::difference_type n, It x) 25{ 26 const std::reverse_iterator<It> r(i); 27 std::reverse_iterator<It> rr = r + n; 28 assert(rr.base() == x); 29} 30 31int main() 32{ 33 const char* s = "1234567890"; 34 test(random_access_iterator<const char*>(s+5), 5, random_access_iterator<const char*>(s)); 35 test(s+5, 5, s); 36} 37