/usr/include/igraph/igraph_lapack.h is in libigraph0-dev 0.7.1-2.1build2.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 | /* -*- mode: C -*- */
/*
IGraph library.
Copyright (C) 2010-2012 Gabor Csardi <csardi.gabor@gmail.com>
334 Harvard street, Cambridge, MA 02139 USA
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., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#ifndef LAPACK_H
#define LAPACK_H
#include "igraph_vector.h"
#include "igraph_matrix.h"
#undef __BEGIN_DECLS
#undef __END_DECLS
#ifdef __cplusplus
# define __BEGIN_DECLS extern "C" {
# define __END_DECLS }
#else
# define __BEGIN_DECLS /* empty */
# define __END_DECLS /* empty */
#endif
__BEGIN_DECLS
/**
* \section about_lapack LAPACK interface in igraph
*
* <para>
* LAPACK is written in Fortran90 and provides routines for solving
* systems of simultaneous linear equations, least-squares solutions
* of linear systems of equations, eigenvalue problems, and singular
* value problems. The associated matrix factorizations (LU, Cholesky,
* QR, SVD, Schur, generalized Schur) are also provided, as are
* related computations such as reordering of the Schur factorizations
* and estimating condition numbers. Dense and banded matrices are
* handled, but not general sparse matrices. In all areas, similar
* functionality is provided for real and complex matrices, in both
* single and double precision.
* </para>
*
* <para>
* igraph provides an interface to a very limited set of LAPACK
* functions, using the regular igraph data structures.
* </para>
*
* <para>
* See more about LAPACK at http://www.netlib.org/lapack/
* </para>
*/
int igraph_lapack_dgetrf(igraph_matrix_t *a, igraph_vector_int_t *ipiv,
int *info);
int igraph_lapack_dgetrs(igraph_bool_t transpose, const igraph_matrix_t *a,
igraph_vector_int_t *ipiv, igraph_matrix_t *b);
int igraph_lapack_dgesv(igraph_matrix_t *a, igraph_vector_int_t *ipiv,
igraph_matrix_t *b, int *info);
typedef enum { IGRAPH_LAPACK_DSYEV_ALL,
IGRAPH_LAPACK_DSYEV_INTERVAL,
IGRAPH_LAPACK_DSYEV_SELECT } igraph_lapack_dsyev_which_t;
int igraph_lapack_dsyevr(const igraph_matrix_t *A,
igraph_lapack_dsyev_which_t which,
igraph_real_t vl, igraph_real_t vu, int vestimate,
int il, int iu, igraph_real_t abstol,
igraph_vector_t *values, igraph_matrix_t *vectors,
igraph_vector_int_t *support);
/* TODO: should we use complex vectors/matrices? */
int igraph_lapack_dgeev(const igraph_matrix_t *A,
igraph_vector_t *valuesreal,
igraph_vector_t *valuesimag,
igraph_matrix_t *vectorsleft,
igraph_matrix_t *vectorsright, int *info);
typedef enum { IGRAPH_LAPACK_DGEEVX_BALANCE_NONE=0,
IGRAPH_LAPACK_DGEEVX_BALANCE_PERM,
IGRAPH_LAPACK_DGEEVX_BALANCE_SCALE,
IGRAPH_LAPACK_DGEEVX_BALANCE_BOTH }
igraph_lapack_dgeevx_balance_t;
int igraph_lapack_dgeevx(igraph_lapack_dgeevx_balance_t balance,
const igraph_matrix_t *A,
igraph_vector_t *valuesreal,
igraph_vector_t *valuesimag,
igraph_matrix_t *vectorsleft,
igraph_matrix_t *vectorsright,
int *ilo, int *ihi, igraph_vector_t *scale,
igraph_real_t *abnrm,
igraph_vector_t *rconde,
igraph_vector_t *rcondv,
int *info);
int igraph_lapack_dgehrd(const igraph_matrix_t *A,
int ilo, int ihi,
igraph_matrix_t *result);
__END_DECLS
#endif
|