/usr/include/igraph/igraph_random.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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 | /* -*- mode: C -*- */
/*
IGraph library.
Copyright (C) 2003-2012 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 REST_RANDOM_H
#define REST_RANDOM_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
#include "igraph_types.h"
#include <stdlib.h>
#include <time.h>
/* The new RNG interface is (somewhat) modelled based on the GSL */
typedef struct igraph_rng_type_t {
const char *name;
unsigned long int min;
unsigned long int max;
int (*init)(void **state);
void (*destroy)(void *state);
int (*seed)(void *state, unsigned long int seed);
unsigned long int (*get)(void *state);
igraph_real_t (*get_real)(void *state);
igraph_real_t (*get_norm)(void *state);
igraph_real_t (*get_geom)(void *state, igraph_real_t p);
igraph_real_t (*get_binom)(void *state, long int n, igraph_real_t p);
igraph_real_t (*get_exp)(void *state, igraph_real_t rate);
} igraph_rng_type_t;
typedef struct igraph_rng_t {
const igraph_rng_type_t *type;
void *state;
int def;
} igraph_rng_t;
/* --------------------------------- */
int igraph_rng_init(igraph_rng_t *rng, const igraph_rng_type_t *type);
void igraph_rng_destroy(igraph_rng_t *rng);
int igraph_rng_seed(igraph_rng_t *rng, unsigned long int seed);
unsigned long int igraph_rng_max(igraph_rng_t *rng);
unsigned long int igraph_rng_min(igraph_rng_t *rng);
const char *igraph_rng_name(igraph_rng_t *rng);
long int igraph_rng_get_integer(igraph_rng_t *rng,
long int l, long int h);
igraph_real_t igraph_rng_get_normal(igraph_rng_t *rng,
igraph_real_t m, igraph_real_t s);
igraph_real_t igraph_rng_get_unif(igraph_rng_t *rng,
igraph_real_t l, igraph_real_t h);
igraph_real_t igraph_rng_get_unif01(igraph_rng_t *rng);
igraph_real_t igraph_rng_get_geom(igraph_rng_t *rng, igraph_real_t p);
igraph_real_t igraph_rng_get_binom(igraph_rng_t *rng, long int n,
igraph_real_t p);
igraph_real_t igraph_rng_get_exp(igraph_rng_t *rng, igraph_real_t rate);
unsigned long int igraph_rng_get_int31(igraph_rng_t *rng);
igraph_real_t igraph_rng_get_exp(igraph_rng_t *rng, igraph_real_t rate);
/* --------------------------------- */
extern const igraph_rng_type_t igraph_rngtype_glibc2;
extern const igraph_rng_type_t igraph_rngtype_rand;
extern const igraph_rng_type_t igraph_rngtype_mt19937;
igraph_rng_t *igraph_rng_default(void);
void igraph_rng_set_default(igraph_rng_t *rng);
/* --------------------------------- */
#ifdef USING_R
void GetRNGstate(void);
void PutRNGstate(void);
#define RNG_BEGIN() GetRNGstate()
#define RNG_END() PutRNGstate()
#else
#define RNG_BEGIN() if (igraph_rng_default()->def==1) { \
igraph_rng_seed(igraph_rng_default(), time(0)); \
igraph_rng_default()->def=2; \
}
#define RNG_END() /* do nothing */
#endif
#define RNG_INTEGER(l,h) (igraph_rng_get_integer(igraph_rng_default(),(l),(h)))
#define RNG_NORMAL(m,s) (igraph_rng_get_normal(igraph_rng_default(),(m),(s)))
#define RNG_UNIF(l,h) (igraph_rng_get_unif(igraph_rng_default(),(l),(h)))
#define RNG_UNIF01() (igraph_rng_get_unif01(igraph_rng_default()))
#define RNG_GEOM(p) (igraph_rng_get_geom(igraph_rng_default(),(p)))
#define RNG_BINOM(n,p) (igraph_rng_get_binom(igraph_rng_default(),(n),(p)))
#define RNG_INT31() (igraph_rng_get_int31(igraph_rng_default()))
__END_DECLS
#endif
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