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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 "ryu/ryu.h"
#include <iostream>
#include <iomanip>
#include <string_view>
#include <utility>
template <class Float, class...Args>
static bool test_all_shorter_interval_cases_impl(Args&&... args) {
using ieee754_traits = jkj::dragonbox::default_float_traits<Float>;
using ieee754_format_info = typename ieee754_traits::format;
using carrier_uint = typename ieee754_traits::carrier_uint;
char buffer1[64];
char buffer2[64];
bool success = true;
for (int e = ieee754_format_info::min_exponent; e <= ieee754_format_info::max_exponent; ++e) {
// Compose a floating-point number
carrier_uint br = carrier_uint(e - ieee754_format_info::exponent_bias)
<< ieee754_format_info::significand_bits;
auto x = jkj::dragonbox::float_bits<Float>{br}.to_float();
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 << "All cases are verified.\n";
}
else {
std::cout << "Error detected.\n";
}
return success;
}
int main() {
bool success = true;
std::cout << "[Testing all shorter interval cases for binary32...]\n";
success &= test_all_shorter_interval_cases_impl<float>();
std::cout << "Done.\n\n\n";
std::cout << "[Testing all shorter interval cases for binary64...]\n";
success &= test_all_shorter_interval_cases_impl<double>();
std::cout << "Done.\n\n\n";
std::cout << "[Testing all shorter interval cases for binary64 with compressed cache...]\n";
success &= test_all_shorter_interval_cases_impl<double>(
jkj::dragonbox::policy::cache::compact);
std::cout << "Done.\n\n\n";
if (!success) {
return -1;
}
}
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