57b08b0944
to reflect the new license. These used slightly different spellings that defeated my regular expressions. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351648
88 lines
2.2 KiB
C++
88 lines
2.2 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <algorithm>
|
|
|
|
// template<class Iter, IntegralLike Size, Callable Generator>
|
|
// requires OutputIterator<Iter, Generator::result_type>
|
|
// && CopyConstructible<Generator>
|
|
// constexpr void // constexpr after c++17
|
|
// generate_n(Iter first, Size n, Generator gen);
|
|
|
|
#include "test_macros.h"
|
|
|
|
#ifdef TEST_COMPILER_C1XX
|
|
#pragma warning(disable: 4244) // conversion from 'const double' to 'int', possible loss of data
|
|
#endif
|
|
|
|
#include <algorithm>
|
|
#include <cassert>
|
|
|
|
#include "test_iterators.h"
|
|
#include "user_defined_integral.hpp"
|
|
|
|
struct gen_test
|
|
{
|
|
TEST_CONSTEXPR int operator()() const {return 2;}
|
|
};
|
|
|
|
|
|
#if TEST_STD_VER > 17
|
|
TEST_CONSTEXPR bool test_constexpr() {
|
|
const size_t N = 5;
|
|
int ib[] = {0, 0, 0, 0, 0, 0}; // one bigger than N
|
|
|
|
auto it = std::generate_n(std::begin(ib), N, gen_test());
|
|
|
|
return it == (std::begin(ib) + N)
|
|
&& std::all_of(std::begin(ib), it, [](int x) { return x == 2; })
|
|
&& *it == 0 // don't overwrite the last value in the output array
|
|
;
|
|
}
|
|
#endif
|
|
|
|
|
|
template <class Iter, class Size>
|
|
void
|
|
test2()
|
|
{
|
|
const unsigned n = 4;
|
|
int ia[n] = {0};
|
|
assert(std::generate_n(Iter(ia), Size(n), gen_test()) == Iter(ia+n));
|
|
assert(ia[0] == 2);
|
|
assert(ia[1] == 2);
|
|
assert(ia[2] == 2);
|
|
assert(ia[3] == 2);
|
|
}
|
|
|
|
template <class Iter>
|
|
void
|
|
test()
|
|
{
|
|
test2<Iter, int>();
|
|
test2<Iter, unsigned int>();
|
|
test2<Iter, long>();
|
|
test2<Iter, unsigned long>();
|
|
test2<Iter, UserDefinedIntegral<unsigned> >();
|
|
test2<Iter, float>();
|
|
test2<Iter, double>(); // this is PR#35498
|
|
test2<Iter, long double>();
|
|
}
|
|
|
|
int main()
|
|
{
|
|
test<forward_iterator<int*> >();
|
|
test<bidirectional_iterator<int*> >();
|
|
test<random_access_iterator<int*> >();
|
|
test<int*>();
|
|
|
|
#if TEST_STD_VER > 17
|
|
static_assert(test_constexpr());
|
|
#endif
|
|
}
|