/usr/include/dolfin/la/solve.h is in libdolfin-dev 1.4.0+dfsg-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | // Copyright (C) 2007-2011 Anders Logg
//
// This file is part of DOLFIN.
//
// DOLFIN 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 3 of the License, or
// (at your option) any later version.
//
// DOLFIN 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 DOLFIN. If not, see <http://www.gnu.org/licenses/>.
//
// Modified by Ola Skavhaug 2008.
// Modified by Garth N. Wells 2011.
//
// First added: 2007-04-30
// Last changed: 2011-10-19
#ifndef __SOLVE_LA_H
#define __SOLVE_LA_H
#include <vector>
#include <string>
#include <dolfin/common/types.h>
namespace dolfin
{
// Forward declarations
class GenericLinearOperator;
class GenericVector;
/// Solve linear system Ax = b
std::size_t solve(const GenericLinearOperator& A, GenericVector& x,
const GenericVector& b,
std::string method = "lu",
std::string preconditioner = "none");
/// List available linear algebra backends
void list_linear_algebra_backends();
/// List available solver methods for current linear algebra backend
void list_linear_solver_methods();
/// List available LU methods for current linear algebra backend
void list_lu_solver_methods();
/// List available Krylov methods for current linear algebra backend
void list_krylov_solver_methods();
/// List available preconditioners for current linear algebra
/// backend
void list_krylov_solver_preconditioners();
// Return true if a specific linear algebra backend is supported
bool has_linear_algebra_backend(std::string backend);
/// Return true if LU method for the current linear algebra backend is
/// available
bool has_lu_solver_method(std::string method);
/// Return true if Krylov method for the current linear algebra
/// backend is available
bool has_krylov_solver_method(std::string method);
/// Return true if Preconditioner for the current linear algebra
/// backend is available
bool has_krylov_solver_preconditioner(std::string preconditioner);
/// Return available linear algebra backends
std::vector<std::pair<std::string, std::string> > linear_algebra_backends();
/// Return a list of available solver methods for current linear
/// algebra backend
std::vector<std::pair<std::string, std::string> > linear_solver_methods();
/// Return a list of available LU methods for current linear algebra
/// backend
std::vector<std::pair<std::string, std::string> > lu_solver_methods();
/// Return a list of available Krylov methods for current linear
/// algebra backend
std::vector<std::pair<std::string, std::string> > krylov_solver_methods();
/// Return a list of available preconditioners for current linear
/// algebra backend
std::vector<std::pair<std::string, std::string> >
krylov_solver_preconditioners();
/// Compute residual ||Ax - b||
double residual(const GenericLinearOperator& A, const GenericVector& x,
const GenericVector& b);
/// Compute norm of vector. Valid norm types are "l2", "l1" and
/// "linf".
double norm(const GenericVector& x, std::string norm_type="l2");
/// Normalize vector according to given normalization type
double normalize(GenericVector& x,
std::string normalization_type = "average");
}
#endif
|