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|---|---|---|---|
| 1 | // -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- | ||
| 2 | // vi: set et ts=4 sw=4 sts=4: | ||
| 3 | // | ||
| 4 | // SPDX-FileCopyrightText: Copyright © DuMux Project contributors, see AUTHORS.md in root folder | ||
| 5 | // SPDX-License-Identifier: GPL-3.0-or-later | ||
| 6 | // | ||
| 7 | /*! | ||
| 8 | * \file | ||
| 9 | * \ingroup Experimental | ||
| 10 | * \brief Class that represents a time level during time integration. | ||
| 11 | */ | ||
| 12 | #ifndef DUMUX_TIMESTEPPING_TIME_LEVEL_HH | ||
| 13 | #define DUMUX_TIMESTEPPING_TIME_LEVEL_HH | ||
| 14 | |||
| 15 | namespace Dumux::Experimental { | ||
| 16 | |||
| 17 | /*! | ||
| 18 | * \brief Class that represents a time level during time integration. | ||
| 19 | */ | ||
| 20 | template<class Scalar> | ||
| 21 | class TimeLevel | ||
| 22 | { | ||
| 23 | public: | ||
| 24 | |||
| 25 | /*! | ||
| 26 | * \brief Construct a time level with a time. | ||
| 27 | * \note This can be used in contexts outside of time integration, | ||
| 28 | * where no information on a previous time or time step size is needed. | ||
| 29 | */ | ||
| 30 | 8 | explicit TimeLevel(Scalar curTime) | |
| 31 | 2 | : curTime_(curTime) | |
| 32 | 2 | , prevTime_(curTime) | |
| 33 | 2 | , timeStepFraction_(1.0) | |
| 34 | {} | ||
| 35 | |||
| 36 | /*! | ||
| 37 | * \brief Construct a time level with information on an ongoing time step. | ||
| 38 | * \param curTime The current time level | ||
| 39 | * \param prevTime The previous time level | ||
| 40 | * \param dtFraction The fraction of a time step this level corresponds to. | ||
| 41 | * \note Within a time integration step, several time levels might occur | ||
| 42 | * when multi-stage methods are used. The argument dtFraction allows | ||
| 43 | * for determining the time that will be reached at the end of the | ||
| 44 | * time integration step. | ||
| 45 | */ | ||
| 46 | 15 | TimeLevel(Scalar curTime, Scalar prevTime, Scalar dtFraction) | |
| 47 | : curTime_(curTime) | ||
| 48 | , prevTime_(prevTime) | ||
| 49 | , timeStepFraction_(dtFraction) | ||
| 50 | {} | ||
| 51 | |||
| 52 | //! Return the current time | ||
| 53 |
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30 | Scalar current() const { return curTime_; } |
| 54 | //! Return the time at the beginning of time integration | ||
| 55 | Scalar previous() const { return prevTime_; } | ||
| 56 | //! Return the fraction of the time step this level corresponds to | ||
| 57 | Scalar timeStepFraction() const { return timeStepFraction_; } | ||
| 58 | |||
| 59 | private: | ||
| 60 | Scalar curTime_; | ||
| 61 | Scalar prevTime_; | ||
| 62 | Scalar timeStepFraction_; | ||
| 63 | }; | ||
| 64 | |||
| 65 | } // end namespace Dumux::Experimental | ||
| 66 | |||
| 67 | #endif | ||
| 68 |