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/*
 * This file is part of the GROMACS molecular simulation package.
 *
 * Copyright (c) 1991-2000, University of Groningen, The Netherlands.
 * Copyright (c) 2001-2004, The GROMACS development team.
 * Copyright (c) 2013,2014, by the GROMACS development team, led by
 * Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
 * and including many others, as listed in the AUTHORS file in the
 * top-level source directory and at http://www.gromacs.org.
 *
 * GROMACS is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1
 * of the License, or (at your option) any later version.
 *
 * GROMACS is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with GROMACS; if not, see
 * http://www.gnu.org/licenses, or write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
 *
 * If you want to redistribute modifications to GROMACS, please
 * consider that scientific software is very special. Version
 * control is crucial - bugs must be traceable. We will be happy to
 * consider code for inclusion in the official distribution, but
 * derived work must not be called official GROMACS. Details are found
 * in the README & COPYING files - if they are missing, get the
 * official version at http://www.gromacs.org.
 *
 * To help us fund GROMACS development, we humbly ask that you cite
 * the research papers on the package. Check out http://www.gromacs.org.
 */

#ifndef _ns_h
#define _ns_h

#include <stdio.h>

#include "gromacs/legacyheaders/network.h"
#include "gromacs/legacyheaders/tgroup.h"
#include "gromacs/legacyheaders/typedefs.h"

#ifdef __cplusplus
extern "C" {
#endif

/****************************************************
 *
 *    U T I L I T I E S May be found in ns.c
 *
 ****************************************************/

void init_neighbor_list(FILE *log, t_forcerec *fr, int homenr);
/*
 * nn is the number of energy terms in the energy matrix
 * (ngener*(ngener-1))/2
 * start is the first atom on this processor
 * homenr is the number of atoms on this processor
 */

int calc_naaj(int icg, int cgtot);
/* Calculate the number of charge groups to interact with for icg */

/****************************************************
 *
 *    N E I G H B O R  S E A R C H I N G
 *
 *    Calls either ns5_core (when grid selected in .mdp file)
 *    or ns_simple_core (when simple selected in .mdp file)
 *
 *    Return total number of pairs searched
 *
 ****************************************************/
void init_ns(FILE *fplog, const t_commrec *cr,
             gmx_ns_t *ns, t_forcerec *fr,
             const gmx_mtop_t *mtop);

int search_neighbours(FILE *log, t_forcerec *fr, matrix box,
                      gmx_localtop_t *top,
                      gmx_groups_t *groups,
                      t_commrec *cr,
                      t_nrnb *nrnb, t_mdatoms *md,
                      gmx_bool bFillGrid,
                      gmx_bool bDoLongRangeNS);


/* Debugging routines from wnblist.c */
void dump_nblist(FILE *out, t_commrec *cr, t_forcerec *fr, int nDNL);

int read_nblist(FILE *in, FILE *out, int **mat, int natoms, gmx_bool bSymm);
/* Returns total number of neighbors. If bSymm the matrix is symmetrized. */

void reallocate_nblist(t_nblist *nl);
/* List reallocation, only exported for Verlet scheme use with FEP */

#ifdef __cplusplus
}
#endif


#endif  /* _ns_h */