/usr/include/gerris/poisson.h is in libgfs-dev 20131206+dfsg-5.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 | /* Gerris - The GNU Flow Solver
* Copyright (C) 2001-2011 National Institute of Water and Atmospheric Research
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef __POISSON_H__
#define __POISSON_H__
#include <gts.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#include "domain.h"
typedef struct _GfsMultilevelParams GfsMultilevelParams;
typedef void (* GfsPoissonSolverFunc) (GfsDomain * domain,
GfsMultilevelParams * par,
GfsVariable * lhs,
GfsVariable * rhs,
GfsVariable * res,
GfsVariable * dia,
gdouble dt);
struct _GfsMultilevelParams {
gdouble tolerance;
guint nrelax, erelax;
guint minlevel;
guint nitermax, nitermin;
guint dimension;
guint niter;
guint depth;
gboolean weighted, function;
gdouble beta, omega;
GfsNorm residual_before, residual;
GfsPoissonSolverFunc poisson_solve;
};
void gfs_multilevel_params_init (GfsMultilevelParams * par);
void gfs_multilevel_params_write (GfsMultilevelParams * par,
FILE * fp);
void gfs_multilevel_params_read (GfsMultilevelParams * par,
GtsFile * fp);
void gfs_multilevel_params_stats_write (GfsMultilevelParams * par,
FILE * fp);
void gfs_relax (GfsDomain * domain,
guint d,
gint max_depth,
gdouble omega,
GfsVariable * u,
GfsVariable * rhs,
GfsVariable * dia);
void gfs_residual (GfsDomain * domain,
guint d,
FttTraverseFlags flags,
gint max_depth,
GfsVariable * u,
GfsVariable * rhs,
GfsVariable * dia,
GfsVariable * res);
void gfs_poisson_coefficients (GfsDomain * domain,
GfsFunction * alpha,
gboolean positive,
gboolean centered,
gboolean reset);
void gfs_poisson_cycle (GfsDomain * domain,
GfsMultilevelParams * p,
GfsVariable * u,
GfsVariable * rhs,
GfsVariable * dia,
GfsVariable * res);
gdouble gfs_poisson_compatibility (GfsDomain * domain,
GfsVariable * lhs,
GfsVariable * rhs,
gdouble dt);
void gfs_poisson_solve (GfsDomain * domain,
GfsMultilevelParams * par,
GfsVariable * lhs,
GfsVariable * rhs,
GfsVariable * res,
GfsVariable * dia,
gdouble dt);
void gfs_diffusion_coefficients (GfsDomain * domain,
GfsSourceDiffusion * d,
gdouble dt,
GfsVariable * rhoc,
GfsVariable * metric,
GfsFunction * alpha,
gdouble beta);
void gfs_diffusion_rhs (GfsDomain * domain,
GfsVariable * v,
GfsVariable * rhs,
GfsVariable * rhoc,
GfsVariable * metric,
gdouble beta);
void gfs_diffusion_residual (GfsDomain * domain,
GfsVariable * u,
GfsVariable * rhs,
GfsVariable * rhoc,
GfsVariable * metric,
GfsVariable * res);
void gfs_diffusion_cycle (GfsDomain * domain,
guint levelmin,
guint depth,
guint nrelax,
GfsVariable * u,
GfsVariable * rhs,
GfsVariable * rhoc,
GfsVariable * metric,
GfsVariable * res);
/* GfsLinearProblem: Object */
struct _GfsLinearProblem {
GPtrArray * LP;
GArray * rhs, * lhs;
GfsVariable * id, * neighbor, * neighborw;
gint istart;
};
GfsLinearProblem * gfs_linear_problem_new (GfsDomain * domain);
void gfs_linear_problem_add_stencil (GfsLinearProblem * lp,
GfsStencil * stencil);
void gfs_linear_problem_destroy (GfsLinearProblem * lp);
GfsLinearProblem * gfs_get_poisson_problem (GfsDomain * domain,
GfsVariable * rhs,
GfsVariable * lhs,
GfsVariable * dia,
gint maxlevel,
GfsVariable * v);
GfsLinearProblem * gfs_get_diffusion_problem (GfsDomain * domain,
GfsVariable * rhs,
GfsVariable * lhs,
GfsVariable * rhoc,
GfsVariable * metric,
gint maxlevel,
GfsVariable * v);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __POISSON_H__ */
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