#include <stdio.h>
#include <inttypes.h>
Go to the source code of this file.
Defines | |
#define | PRIu64 "llu" |
#define | PRIx64 "llx" |
Functions | |
uint32_t | gen_rand32 (void) |
This function generates and returns 32-bit pseudorandom number. | |
uint64_t | gen_rand64 (void) |
This function generates and returns 64-bit pseudorandom number. | |
void | fill_array32 (uint32_t array[], int size) |
This function generates pseudorandom 32-bit integers in the specified array[] by one call. | |
void | fill_array64 (uint64_t array[], int size) |
This function generates pseudorandom 64-bit integers in the specified array[] by one call. | |
void | init_gen_rand (uint32_t seed) |
This function initializes the internal state array with a 32-bit integer seed. | |
void | init_by_array (uint32_t init_key[], int key_length) |
This function initializes the internal state array, with an array of 32-bit integers used as the seeds. | |
char * | get_idstring (void) |
This function returns the identification string. | |
int | get_min_array_size32 (void) |
This function returns the minimum size of array used for fill_array32() function. | |
int | get_min_array_size64 (void) |
This function returns the minimum size of array used for fill_array64() function. | |
static double | to_real1 (uint32_t v) |
generates a random number on [0,1]-real-interval | |
static double | genrand_real1 (void) |
generates a random number on [0,1]-real-interval | |
static double | to_real2 (uint32_t v) |
generates a random number on [0,1)-real-interval | |
static double | genrand_real2 (void) |
generates a random number on [0,1)-real-interval | |
static double | to_real3 (uint32_t v) |
generates a random number on (0,1)-real-interval | |
static double | genrand_real3 (void) |
generates a random number on (0,1)-real-interval | |
static double | to_res53 (uint64_t v) |
generates a random number on [0,1) with 53-bit resolution | |
static double | genrand_res53 (void) |
generates a random number on [0,1) with 53-bit resolution |
Makoto Matsumoto (Hiroshima University)
The new BSD License is applied to this software. see LICENSE.txt
typedef unsigned int uint32_t typedef unsigned long long uint64_t #define PRIu64 "llu" #define PRIx64 "llx"
#define PRIu64 "llu" |
#define PRIx64 "llx" |
void fill_array32 | ( | uint32_t | array[], | |
int | size | |||
) | [inline] |
This function generates pseudorandom 32-bit integers in the specified array[] by one call.
The number of pseudorandom integers is specified by the argument size, which must be at least 624 and a multiple of four. The generation by this function is much faster than the following gen_rand function.
For initialization, init_gen_rand or init_by_array must be called before the first call of this function. This function can not be used after calling gen_rand function, without initialization.
array | an array where pseudorandom 32-bit integers are filled by this function. The pointer to the array must be "aligned" (namely, must be a multiple of 16) in the SIMD version, since it refers to the address of a 128-bit integer. In the standard C version, the pointer is arbitrary. | |
size | the number of 32-bit pseudorandom integers to be generated. size must be a multiple of 4, and greater than or equal to (MEXP / 128 + 1) * 4. |
void fill_array64 | ( | uint64_t | array[], | |
int | size | |||
) | [inline] |
This function generates pseudorandom 64-bit integers in the specified array[] by one call.
The number of pseudorandom integers is specified by the argument size, which must be at least 312 and a multiple of two. The generation by this function is much faster than the following gen_rand function.
For initialization, init_gen_rand or init_by_array must be called before the first call of this function. This function can not be used after calling gen_rand function, without initialization.
array | an array where pseudorandom 64-bit integers are filled by this function. The pointer to the array must be "aligned" (namely, must be a multiple of 16) in the SIMD version, since it refers to the address of a 128-bit integer. In the standard C version, the pointer is arbitrary. | |
size | the number of 64-bit pseudorandom integers to be generated. size must be a multiple of 2, and greater than or equal to (MEXP / 128 + 1) * 2 |
uint32_t gen_rand32 | ( | void | ) | [inline] |
This function generates and returns 32-bit pseudorandom number.
init_gen_rand or init_by_array must be called before this function.
uint64_t gen_rand64 | ( | void | ) | [inline] |
This function generates and returns 64-bit pseudorandom number.
init_gen_rand or init_by_array must be called before this function. The function gen_rand64 should not be called after gen_rand32, unless an initialization is again executed.
static double genrand_real1 | ( | void | ) | [inline, static] |
generates a random number on [0,1]-real-interval
static double genrand_real2 | ( | void | ) | [inline, static] |
generates a random number on [0,1)-real-interval
static double genrand_real3 | ( | void | ) | [inline, static] |
generates a random number on (0,1)-real-interval
static double genrand_res53 | ( | void | ) | [inline, static] |
generates a random number on [0,1) with 53-bit resolution
char* get_idstring | ( | void | ) |
This function returns the identification string.
The string shows the word size, the Mersenne exponent, and all parameters of this generator.
int get_min_array_size32 | ( | void | ) |
This function returns the minimum size of array used for fill_array32() function.
int get_min_array_size64 | ( | void | ) |
This function returns the minimum size of array used for fill_array64() function.
void init_by_array | ( | uint32_t | init_key[], | |
int | key_length | |||
) |
This function initializes the internal state array, with an array of 32-bit integers used as the seeds.
init_key | the array of 32-bit integers, used as a seed. | |
key_length | the length of init_key. |
void init_gen_rand | ( | uint32_t | seed | ) |
This function initializes the internal state array with a 32-bit integer seed.
seed | a 32-bit integer used as the seed. |
static double to_real1 | ( | uint32_t | v | ) | [inline, static] |
generates a random number on [0,1]-real-interval
static double to_real2 | ( | uint32_t | v | ) | [inline, static] |
generates a random number on [0,1)-real-interval
static double to_real3 | ( | uint32_t | v | ) | [inline, static] |
generates a random number on (0,1)-real-interval
static double to_res53 | ( | uint64_t | v | ) | [inline, static] |
generates a random number on [0,1) with 53-bit resolution