/******************************************************************************
 * This program prints various math constants.
 * 
 * Copyright © 2020 Richard Lesh.  All rights reserved.
 *****************************************************************************/

#include <clocale>
#include <codecvt>
#include <fmt/format.h>
#include <fmt/xchar.h>
#include <iostream>
#include <string>

std::locale utf8loc(std::locale(), new std::codecvt_utf8<wchar_t>);
using namespace std;

static double const C_M_PER = 299792458;
static double const PLANCK_J = 6.62607015E-34;
static double const NEWTONS_GRAVITAION_M3_PER_KG_PER = 6.6743015E-11;
static double const ELEMENTARY_CHARGE_COULOMBS = 1.602176634E-19;
static double const AVOGADRO_PER_MOL = 6.02214076E23;
static double const BOLTZMANN_J_PER = 1.380649E-23;

int main(int argc, char **argv) {
    setlocale(LC_ALL, "en_US.UTF-8");
    wcout.imbue(utf8loc);
    wcin.imbue(utf8loc);

    wcout << fmt::format(L"c: {0:.16e}", C_M_PER) << endl;
    wcout << fmt::format(L"h: {0:.16e}", PLANCK_J) << endl;
    wcout << fmt::format(L"G: {0:.16e}", NEWTONS_GRAVITAION_M3_PER_KG_PER) << endl;
    wcout << fmt::format(L"e: {0:.16e}", ELEMENTARY_CHARGE_COULOMBS) << endl;
    wcout << fmt::format(L"L: {0:.16e}", AVOGADRO_PER_MOL) << endl;
    wcout << fmt::format(L"k: {0:.16e}", BOLTZMANN_J_PER) << endl;
    return 0;
}