/usr/include/igraph/igraph_vector.h is in libigraph0-dev 0.6.5-5.
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  | /* -*- mode: C -*-  */
/* 
   IGraph library.
   Copyright (C) 2009-2012  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 IGRAPH_VECTOR_H
#define IGRAPH_VECTOR_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
#include "igraph_types.h"
#include "igraph_complex.h"
#ifdef HAVE_STDINT_H
#  include <stdint.h>
#else
#  if HAVE_SYS_INT_TYPES_H
#    include <sys/int_types.h>    /* for Solaris */
#  endif
#endif
__BEGIN_DECLS
/* -------------------------------------------------- */
/* Flexible vector                                    */
/* -------------------------------------------------- */
#define BASE_IGRAPH_REAL
#include "igraph_pmt.h"
#include "igraph_vector_pmt.h"
#include "igraph_pmt_off.h"
#undef BASE_IGRAPH_REAL
#define BASE_LONG
#include "igraph_pmt.h"
#include "igraph_vector_pmt.h"
#include "igraph_pmt_off.h"
#undef BASE_LONG
#define BASE_CHAR
#include "igraph_pmt.h"
#include "igraph_vector_pmt.h"
#include "igraph_pmt_off.h"
#undef BASE_CHAR
#define BASE_BOOL
#include "igraph_pmt.h"
#include "igraph_vector_pmt.h"
#include "igraph_pmt_off.h"
#undef BASE_BOOL
#define BASE_INT
#include "igraph_pmt.h"
#include "igraph_vector_pmt.h"
#include "igraph_pmt_off.h"
#undef BASE_INT
#define BASE_COMPLEX
#include "igraph_pmt.h"
#include "igraph_vector_pmt.h"
#include "igraph_pmt_off.h"
#undef BASE_COMPLEX
int igraph_vector_floor(const igraph_vector_t *from, igraph_vector_long_t *to);
int igraph_vector_round(const igraph_vector_t *from, igraph_vector_long_t *to);
igraph_bool_t igraph_vector_e_tol(const igraph_vector_t *lhs,
				  const igraph_vector_t *rhs,
				  igraph_real_t tol);
/* These are for internal use only */
int igraph_vector_order(const igraph_vector_t* v, const igraph_vector_t *v2,
			igraph_vector_t* res, igraph_real_t maxval);
int igraph_vector_order1(const igraph_vector_t* v, 
			 igraph_vector_t* res, igraph_real_t maxval);
int igraph_vector_order2(igraph_vector_t *v);
int igraph_vector_rank(const igraph_vector_t *v, igraph_vector_t *res, 
		       long int nodes);
__END_DECLS
#endif
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