TimeIncrement.h

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// SPDX-FileCopyrightText: Copyright (c) OpenGeoSys Community (opengeosys.org)
// SPDX-License-Identifier: BSD-3-Clause
 
#pragma once
 
#include <algorithm>
#include <cmath>
#include <compare>
#include <iomanip>
#include <limits>
 
#include "MathLib/KahanSum.h"
 
namespace NumLib
{
struct TimeIncrement;
}
 
template <>
struct fmt::formatter<NumLib::TimeIncrement> : fmt::ostream_formatter
{
};
 
namespace NumLib
{
struct TimeIncrement
{
    constexpr explicit TimeIncrement(double const dt) : value_{dt} {}
 
    constexpr double operator()() const { return value_; }
 
    friend inline std::ostream& operator<<(std::ostream& os,
                                           TimeIncrement const& dt)
    {
        auto const precision = os.precision();
        return os << std::setprecision(
                         std::numeric_limits<double>::max_digits10)
                  << dt.value_ << std::setprecision(precision);
    }
 
private:
    double value_;
};
 
}  // namespace NumLib