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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 <iostream>
#include <iomanip>
#include <string>
template <class Float>
static void live_test() {
char buffer[41];
while (true) {
Float x;
std::string x_str;
while (true) {
std::getline(std::cin, x_str);
try {
if constexpr (std::is_same_v<Float, float>) {
x = std::stof(x_str);
}
else {
x = std::stod(x_str);
}
}
catch (...) {
std::cout << "Not a valid input; input again.\n";
continue;
}
break;
}
auto xx = jkj::dragonbox::float_bits<Float>{x};
std::cout << " sign: " << (xx.is_negative() ? "-" : "+") << std::endl;
std::cout << " exponent bits: "
<< "0x" << std::hex << std::setfill('0') << xx.extract_exponent_bits() << std::dec
<< " (value: " << xx.binary_exponent() << ")\n";
std::cout << " significand bits: "
<< "0x" << std::hex << std::setfill('0');
if constexpr (std::is_same_v<Float, float>) {
std::cout << std::setw(8);
}
else {
std::cout << std::setw(16);
}
std::cout << xx.extract_significand_bits() << " (value: 0x" << xx.binary_significand()
<< ")\n"
<< std::dec;
jkj::dragonbox::to_chars(x, buffer);
std::cout << " Dragonbox output: " << buffer << "\n\n";
}
}
int main() {
constexpr enum { test_float, test_double } test = test_double;
if constexpr (test == test_float) {
std::cout << "[Start live test for float's]\n";
live_test<float>();
}
else if constexpr (test == test_double) {
std::cout << "[Start live test for double's]\n";
live_test<double>();
}
}
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