Add conserved quantity for Berendsen P-couple
[gromacs.git] / src / gromacs / gmxpreprocess / gen_maxwell_velocities.h
blob63d64d51c0ab8d71c93b4e3f564e0de3b690675f
1 /*
2 * This file is part of the GROMACS molecular simulation package.
4 * Copyright (c) 1991-2000, University of Groningen, The Netherlands.
5 * Copyright (c) 2001-2004, The GROMACS development team.
6 * Copyright (c) 2013,2014,2015, by the GROMACS development team, led by
7 * Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
8 * and including many others, as listed in the AUTHORS file in the
9 * top-level source directory and at http://www.gromacs.org.
11 * GROMACS is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public License
13 * as published by the Free Software Foundation; either version 2.1
14 * of the License, or (at your option) any later version.
16 * GROMACS is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with GROMACS; if not, see
23 * http://www.gnu.org/licenses, or write to the Free Software Foundation,
24 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
26 * If you want to redistribute modifications to GROMACS, please
27 * consider that scientific software is very special. Version
28 * control is crucial - bugs must be traceable. We will be happy to
29 * consider code for inclusion in the official distribution, but
30 * derived work must not be called official GROMACS. Details are found
31 * in the README & COPYING files - if they are missing, get the
32 * official version at http://www.gromacs.org.
34 * To help us fund GROMACS development, we humbly ask that you cite
35 * the research papers on the package. Check out http://www.gromacs.org.
38 #ifndef GMX_MAXWELL_VELOCITIES
39 #define GMX_MAXWELL_VELOCITIES
41 #include <cstdio>
43 #include "gromacs/math/vectypes.h"
44 #include "gromacs/utility/real.h"
46 struct gmx_mtop_t;
48 /*! \brief
49 * Generate Maxwellian velocities.
51 * \param[in] tempi Temperature to generate around
52 * \param[in] seed Random number generator seed
53 * \param[in] mtop Molecular Topology
54 * \param[out] v Velocities
56 void maxwell_speed(real tempi, unsigned int seed,
57 gmx_mtop_t *mtop, rvec v[]);
59 /*! \brief
60 * Remove the center of mass motion in a set of coordinates.
62 * \param[out] log File for printing debug information
63 * \param[in] natoms Number of atoms
64 * \param[in] mass Atomic masses
65 * \param[in] x Coordinates
66 * \param[out] v Velocities
68 void stop_cm(FILE *log, int natoms, real mass[], rvec x[], rvec v[]);
70 #endif