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// -*- C++ -*-
//===-- generate.pass.cpp -------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14
#include "support/pstl_test_config.h"
#include <atomic>
#include <execution>
#include <algorithm>
#include "support/utils.h"
using namespace TestUtils;
template <typename T>
struct Generator_count
{
const T def_val = T(-1);
T
operator()()
{
return def_val;
}
T
default_value() const
{
return def_val;
}
};
struct test_generate
{
template <typename Policy, typename Iterator, typename Size>
void
operator()(Policy&& exec, Iterator first, Iterator last, Size n)
{
using namespace std;
typedef typename std::iterator_traits<Iterator>::value_type T;
// Try random-access iterator
{
Generator_count<T> g;
generate(exec, first, last, g);
Size count = std::count(first, last, g.default_value());
EXPECT_TRUE(count == n, "generate wrong result for generate");
std::fill(first, last, T(0));
}
{
Generator_count<T> g;
const auto m = n / 2;
auto actual_last = generate_n(exec, first, m, g);
Size count = std::count(first, actual_last, g.default_value());
EXPECT_TRUE(count == m && actual_last == std::next(first, m), "generate_n wrong result for generate_n");
std::fill(first, actual_last, T(0));
}
}
};
template <typename T>
void
test_generate_by_type()
{
for (size_t n = 0; n <= 100000; n = n < 16 ? n + 1 : size_t(3.1415 * n))
{
Sequence<T> in(n, [](size_t) -> T { return T(0); }); //fill by zero
invoke_on_all_policies(test_generate(), in.begin(), in.end(), in.size());
}
}
template <typename T>
struct test_non_const
{
template <typename Policy, typename Iterator>
void
operator()(Policy&& exec, Iterator iter)
{
auto gen = []() { return T(0); };
generate(exec, iter, iter, non_const(gen));
generate_n(exec, iter, 0, non_const(gen));
}
};
int
main()
{
test_generate_by_type<int32_t>();
test_generate_by_type<float64_t>();
test_algo_basic_single<int32_t>(run_for_rnd_fw<test_non_const<int32_t>>());
std::cout << done() << std::endl;
return 0;
}
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