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 // UNSUPPORTED: c++98, c++03, c++11, c++14 11 12 // <algorithm> 13 14 // template <class PopulationIterator, class SampleIterator, class Distance, 15 // class UniformRandomNumberGenerator> 16 // SampleIterator sample(PopulationIterator first, PopulationIterator last, 17 // SampleIterator out, Distance n, 18 // UniformRandomNumberGenerator &&g); 19 20 #include <algorithm> 21 #include <random> 22 #include <cassert> 23 24 #include "test_iterators.h" 25 26 template <class PopulationIterator, class SampleIterator> void test() { 27 int ia[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; 28 const unsigned is = sizeof(ia) / sizeof(ia[0]); 29 const unsigned os = 4; 30 int oa[os]; 31 std::minstd_rand g; 32 std::sample(PopulationIterator(ia), PopulationIterator(ia + is), 33 SampleIterator(oa), os, g); 34 } 35 36 int main() { 37 // expected-error@algorithm:* {{static_assert failed "SampleIterator must meet the requirements of RandomAccessIterator"}} 38 // expected-error@algorithm:* 2 {{does not provide a subscript operator}} 39 // expected-error@algorithm:* {{invalid operands}} 40 test<input_iterator<int *>, output_iterator<int *> >(); 41 } 42
