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// Copyright 2020 Junekey Jeon
//
// The contents of this file may be used under the terms of
// the Apache License v2.0 with LLVM Exceptions.
//
// (See accompanying file LICENSE-Apache or copy at
// https://llvm.org/foundation/relicensing/LICENSE.txt)
//
// Alternatively, the contents of this file may be used under the terms of
// the Boost Software License, Version 1.0.
// (See accompanying file LICENSE-Boost or copy at
// https://www.boost.org/LICENSE_1_0.txt)
//
// Unless required by applicable law or agreed to in writing, this software
// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.
#include "dragonbox/dragonbox_to_chars.h"
#include "random_float.h"
#include "ryu/ryu.h"
#include <iostream>
#include <string_view>
#include <utility>
template <class Float, class TypenameString, class... Args>
static bool uniform_random_test(std::size_t number_of_tests, TypenameString&& type_name_string,
Args&&... args) {
char buffer1[64];
char buffer2[64];
auto rg = generate_correctly_seeded_mt19937_64();
bool success = true;
for (std::size_t test_idx = 0; test_idx < number_of_tests; ++test_idx) {
auto x = uniformly_randomly_generate_general_float<Float>(rg);
// Check if the output is identical to that of Ryu
jkj::dragonbox::to_chars(x, buffer1, std::forward<Args>(args)...);
if constexpr (std::is_same_v<Float, float>) {
f2s_buffered(x, buffer2);
}
else {
d2s_buffered(x, buffer2);
}
std::string_view view1(buffer1);
std::string_view view2(buffer2);
if (view1 != view2) {
std::cout << "Error detected! [Ryu = " << buffer2 << ", Dragonbox = " << buffer1
<< "]\n";
success = false;
}
}
if (success) {
std::cout << "Uniform random test for " << type_name_string << " with " << number_of_tests
<< " examples succeeded.\n";
}
return success;
}
int main() {
constexpr bool run_float = true;
constexpr std::size_t number_of_uniform_random_tests_float = 10000000;
constexpr bool run_double = true;
constexpr std::size_t number_of_uniform_random_tests_double = 10000000;
constexpr bool run_double_with_compressed_cache = true;
constexpr std::size_t number_of_uniform_random_tests_double_compressed = 10000000;
bool success = true;
if constexpr (run_float) {
std::cout << "[Testing uniformly randomly generated float inputs...]\n";
success &= uniform_random_test<float>(number_of_uniform_random_tests_float, "float");
std::cout << "Done.\n\n\n";
}
if constexpr (run_double) {
std::cout << "[Testing uniformly randomly generated double inputs...]\n";
success &= uniform_random_test<double>(number_of_uniform_random_tests_double, "double");
std::cout << "Done.\n\n\n";
}
if constexpr (run_double_with_compressed_cache) {
std::cout
<< "[Testing uniformly randomly generated double inputs with compressed cache...]\n";
success &= uniform_random_test<double>(number_of_uniform_random_tests_double_compressed,
"double", jkj::dragonbox::policy::cache::compact);
std::cout << "Done.\n\n\n";
}
if (!success) {
return -1;
}
}
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