mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
91 lines
2.9 KiB
C
91 lines
2.9 KiB
C
#ifndef RUBY_RANDOM_H
|
|
#define RUBY_RANDOM_H 1
|
|
/**
|
|
* @file
|
|
* @date Sat May 7 11:51:14 JST 2016
|
|
* @copyright 2007-2020 Yukihiro Matsumoto
|
|
* @copyright This file is a part of the programming language Ruby.
|
|
* Permission is hereby granted, to either redistribute and/or
|
|
* modify this file, provided that the conditions mentioned in the
|
|
* file COPYING are met. Consult the file for details.
|
|
*/
|
|
|
|
#include "ruby/ruby.h"
|
|
|
|
RBIMPL_SYMBOL_EXPORT_BEGIN()
|
|
|
|
typedef struct {
|
|
VALUE seed;
|
|
} rb_random_t;
|
|
|
|
typedef void rb_random_init_func(rb_random_t *, const uint32_t *, size_t);
|
|
typedef unsigned int rb_random_get_int32_func(rb_random_t *);
|
|
typedef void rb_random_get_bytes_func(rb_random_t *, void *, size_t);
|
|
typedef double rb_random_get_real_func(rb_random_t *, int);
|
|
|
|
typedef struct {
|
|
size_t default_seed_bits;
|
|
rb_random_init_func *init;
|
|
rb_random_get_int32_func *get_int32;
|
|
rb_random_get_bytes_func *get_bytes;
|
|
rb_random_get_real_func *get_real;
|
|
} rb_random_interface_t;
|
|
|
|
#define RB_RANDOM_INTERFACE_DECLARE(prefix) \
|
|
static void prefix##_init(rb_random_t *, const uint32_t *, size_t); \
|
|
static unsigned int prefix##_get_int32(rb_random_t *); \
|
|
static void prefix##_get_bytes(rb_random_t *, void *, size_t)
|
|
|
|
#define RB_RANDOM_INTERFACE_DECLARE_WITH_REAL(prefix) \
|
|
RB_RANDOM_INTERFACE_DECLARE(prefix); \
|
|
static double prefix##_get_real(rb_random_t *, int)
|
|
|
|
#define RB_RANDOM_INTERFACE_DEFINE(prefix) \
|
|
prefix##_init, \
|
|
prefix##_get_int32, \
|
|
prefix##_get_bytes
|
|
|
|
#define RB_RANDOM_INTERFACE_DEFINE_WITH_REAL(prefix) \
|
|
RB_RANDOM_INTERFACE_DEFINE(prefix), \
|
|
prefix##_get_real
|
|
|
|
#if defined _WIN32 && !defined __CYGWIN__
|
|
typedef rb_data_type_t rb_random_data_type_t;
|
|
# define RB_RANDOM_PARENT 0
|
|
#else
|
|
typedef const rb_data_type_t rb_random_data_type_t;
|
|
# define RB_RANDOM_PARENT &rb_random_data_type
|
|
#endif
|
|
|
|
#define RB_RANDOM_DATA_INIT_PARENT(random_data) \
|
|
rbimpl_random_data_init_parent(&random_data)
|
|
|
|
void rb_random_mark(void *ptr);
|
|
void rb_random_base_init(rb_random_t *rnd);
|
|
double rb_int_pair_to_real(uint32_t a, uint32_t b, int excl);
|
|
void rb_rand_bytes_int32(rb_random_get_int32_func *, rb_random_t *, void *, size_t);
|
|
RUBY_EXTERN const rb_data_type_t rb_random_data_type;
|
|
|
|
RBIMPL_SYMBOL_EXPORT_END()
|
|
|
|
RBIMPL_ATTR_PURE_UNLESS_DEBUG()
|
|
/* :TODO: can this function be __attribute__((returns_nonnull)) or not? */
|
|
static inline const rb_random_interface_t *
|
|
rb_rand_if(VALUE obj)
|
|
{
|
|
RBIMPL_ASSERT_OR_ASSUME(RTYPEDDATA_P(obj));
|
|
const struct rb_data_type_struct *t = RTYPEDDATA_TYPE(obj);
|
|
const void *ret = t->data;
|
|
return RBIMPL_CAST((const rb_random_interface_t *)ret);
|
|
}
|
|
|
|
RBIMPL_ATTR_NOALIAS()
|
|
static inline void
|
|
rbimpl_random_data_init_parent(rb_random_data_type_t *random_data)
|
|
{
|
|
#if defined _WIN32 && !defined __CYGWIN__
|
|
random_data->parent = &rb_random_data_type;
|
|
#endif
|
|
}
|
|
|
|
#endif /* RUBY_RANDOM_H */
|