mirror of
https://github.com/llvm-mirror/libcxx.git
synced 2025-10-23 18:38:30 +08:00
17c38db650
Libc++'s implementation of shuffle and sample already support lvalue and rvalue RNG's. This patch adds tests for both categories and marks the issue as complete. This patch also contains drive-by change for std::experimental::sample which improves the diagnostics produced when the correct iterator categories are not supplied. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@279947 91177308-0d34-0410-b5e6-96231b3b80d8
40 lines
1.5 KiB
C++
40 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <algorithm>
|
|
|
|
// template <class PopulationIterator, class SampleIterator, class Distance,
|
|
// class UniformRandomNumberGenerator>
|
|
// SampleIterator sample(PopulationIterator first, PopulationIterator last,
|
|
// SampleIterator out, Distance n,
|
|
// UniformRandomNumberGenerator &&g);
|
|
|
|
#include <experimental/algorithm>
|
|
#include <random>
|
|
#include <cassert>
|
|
|
|
#include "test_iterators.h"
|
|
|
|
template <class PopulationIterator, class SampleIterator> void test() {
|
|
int ia[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
|
|
const unsigned is = sizeof(ia) / sizeof(ia[0]);
|
|
const unsigned os = 4;
|
|
int oa[os];
|
|
std::minstd_rand g;
|
|
std::experimental::sample(PopulationIterator(ia), PopulationIterator(ia + is),
|
|
SampleIterator(oa), os, g);
|
|
}
|
|
|
|
int main() {
|
|
// expected-error@experimental/algorithm:* {{static_assert failed "SampleIterator must meet the requirements of RandomAccessIterator"}}
|
|
// expected-error@experimental/algorithm:* 2 {{does not provide a subscript operator}}
|
|
// expected-error@experimental/algorithm:* {{invalid operands}}
|
|
test<input_iterator<int *>, output_iterator<int *> >();
|
|
}
|