#include <string.h>
#include <assert.h>
#include "dSFMT.h"
#include "dSFMT-params.h"
Data Structures | |
union | W128_T |
128-bit data structure More... | |
Typedefs | |
typedef W128_T | w128_t |
128-bit data type | |
Functions | |
static void | lshift128 (w128_t *out, const w128_t *in, int shift) |
This function simulates SIMD 128-bit left shift by the standard C. | |
static void | gen_rand_all (void) |
This function fills the internal state array with double precision floating point pseudorandom numbers of the IEEE 754 format. | |
static void | gen_rand_array (w128_t array[], int size) |
This function fills the user-specified array with double precision floating point pseudorandom numbers of the IEEE 754 format. | |
static uint32_t | ini_func1 (uint32_t x) |
This function represents a function used in the initialization by init_by_array. | |
static uint32_t | ini_func2 (uint32_t x) |
This function represents a function used in the initialization by init_by_array. | |
static void | convert_co (w128_t array[], int size) |
This function converts the double precision floating point numbers which distribute uniformly in the range [1, 2) to those which distribute uniformly in the range [0, 1). | |
static void | convert_oc (w128_t array[], int size) |
This function converts the double precision floating point numbers which distribute uniformly in the range [1, 2) to those which distribute uniformly in the range (0, 1]. | |
static void | convert_oo (w128_t array[], int size) |
This function converts the double precision floating point numbers which distribute uniformly in the range [1, 2) to those which distribute uniformly in the range (0, 1). | |
static int | sfmt_idxof (int i) |
This function simulate a 32-bit array index overlapped to 64-bit array of LITTLE ENDIAN in BIG ENDIAN machine. | |
static void | initial_mask (void) |
This function initializes the internal state array to fit the IEEE 754 format. | |
static void | period_certification () |
This function certificate the period of 2^{SFMT_MEXP}-1. | |
static void | do_recursion (w128_t *r, w128_t *a, w128_t *b, w128_t *c, w128_t *lung) |
This function represents the recursion formula. | |
char * | get_idstring (void) |
This function returns the identification string. | |
int | get_min_array_size (void) |
This function returns the minimum size of array used for fill_array functions. | |
double | genrand_close1_open2 (void) |
This function generates and returns double precision pseudorandom number which distributes uniformly in the range [1, 2). | |
void | fill_array_close1_open2 (double array[], int size) |
This function generates double precision floating point pseudorandom numbers which distribute in the range [1, 2) to the specified array[] by one call. | |
void | fill_array_open_close (double array[], int size) |
This function generates double precision floating point pseudorandom numbers which distribute in the range (0, 1] to the specified array[] by one call. | |
void | fill_array_close_open (double array[], int size) |
This function generates double precision floating point pseudorandom numbers which distribute in the range [0, 1) to the specified array[] by one call. | |
void | fill_array_open_open (double array[], int size) |
This function generates double precision floating point pseudorandom numbers which distribute in the range (0, 1) to 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. | |
Variables | |
static w128_t | sfmt [SFMT_N+1] |
the 128-bit internal state array | |
static double * | psfmt64 = &sfmt[0].d[0] |
the double pointer to the 128-bit internal state array | |
static int | sfmt_idx |
index counter to the internal state array as double | |
static int | is_sfmt_initialized = 0 |
a flag: it is 0 if and only if the internal state is not yet initialized. | |
static uint64_t | sfmt_pcv [2] = {SFMT_PCV1, SFMT_PCV2} |
a period certification vector which certificate the period of 2^{SFMT_MEXP}-1. |
Makoto Matsumoto (Hiroshima University)
The new BSD License is applied to this software, see LICENSE.txt
static void convert_co | ( | w128_t | array[], | |
int | size | |||
) | [inline, static] |
This function converts the double precision floating point numbers which distribute uniformly in the range [1, 2) to those which distribute uniformly in the range [0, 1).
array | array of double precision floating point numbers | |
size | size of the array |
static void convert_oc | ( | w128_t | array[], | |
int | size | |||
) | [inline, static] |
This function converts the double precision floating point numbers which distribute uniformly in the range [1, 2) to those which distribute uniformly in the range (0, 1].
array | array of double precision floating point numbers | |
size | size of the array |
static void convert_oo | ( | w128_t | array[], | |
int | size | |||
) | [inline, static] |
This function converts the double precision floating point numbers which distribute uniformly in the range [1, 2) to those which distribute uniformly in the range (0, 1).
array | array of double precision floating point numbers | |
size | size of the array |
static void do_recursion | ( | w128_t * | r, | |
w128_t * | a, | |||
w128_t * | b, | |||
w128_t * | c, | |||
w128_t * | lung | |||
) | [inline, static] |
This function represents the recursion formula.
r | output | |
a | a 128-bit part of the internal state array | |
b | a 128-bit part of the internal state array | |
c | a 128-bit part of the internal state array | |
lung | a 128-bit part of the internal state array |
void fill_array_close1_open2 | ( | double | array[], | |
int | size | |||
) |
This function generates double precision floating point pseudorandom numbers which distribute in the range [1, 2) to the specified array[] by one call.
The number of pseudorandom numbers is specified by the argument size, which must be at least (SFMT_MEXP / 128) * 2 and a multiple of two. The function get_min_array_size() returns this minimum size. The generation by this function is much faster than the following fill_array_xxx functions.
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 genrand_xxx functions, without initialization.
array | an array where pseudorandom numbers 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 (SFMT_MEXP / 128) * 2. |
void fill_array_close_open | ( | double | array[], | |
int | size | |||
) |
This function generates double precision floating point pseudorandom numbers which distribute in the range [0, 1) to the specified array[] by one call.
This function is the same as fill_array_close1_open2() except the distribution range.
array | an array where pseudorandom numbers are filled by this function. | |
size | the number of pseudorandom numbers to be generated. see also |
void fill_array_open_close | ( | double | array[], | |
int | size | |||
) |
This function generates double precision floating point pseudorandom numbers which distribute in the range (0, 1] to the specified array[] by one call.
This function is the same as fill_array_close1_open2() except the distribution range.
array | an array where pseudorandom numbers are filled by this function. | |
size | the number of pseudorandom numbers to be generated. see also |
void fill_array_open_open | ( | double | array[], | |
int | size | |||
) |
This function generates double precision floating point pseudorandom numbers which distribute in the range (0, 1) to the specified array[] by one call.
This function is the same as fill_array_close1_open2() except the distribution range.
array | an array where pseudorandom numbers are filled by this function. | |
size | the number of pseudorandom numbers to be generated. see also |
static void gen_rand_all | ( | void | ) | [inline, static] |
This function fills the internal state array with double precision floating point pseudorandom numbers of the IEEE 754 format.
static void gen_rand_array | ( | w128_t | array[], | |
int | size | |||
) | [inline, static] |
This function fills the user-specified array with double precision floating point pseudorandom numbers of the IEEE 754 format.
array | an 128-bit array to be filled by pseudorandom numbers. | |
size | number of 128-bit pseudorandom numbers to be generated. |
double genrand_close1_open2 | ( | void | ) | [inline] |
This function generates and returns double precision pseudorandom number which distributes uniformly in the range [1, 2).
This is the primitive and faster than generating numbers in other ranges. init_gen_rand() or init_by_array() must be called before this function.
char* get_idstring | ( | void | ) |
This function returns the identification string.
The string shows the Mersenne exponent, and all parameters of this generator.
int get_min_array_size | ( | void | ) |
This function returns the minimum size of array used for fill_array functions.
static uint32_t ini_func1 | ( | uint32_t | x | ) | [inline, static] |
This function represents a function used in the initialization by init_by_array.
x | 32-bit integer |
static uint32_t ini_func2 | ( | uint32_t | x | ) | [inline, static] |
This function represents a function used in the initialization by init_by_array.
x | 32-bit integer |
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. |
void initial_mask | ( | void | ) | [static] |
This function initializes the internal state array to fit the IEEE 754 format.
This function simulates SIMD 128-bit left shift by the standard C.
The 128-bit integer given in in is shifted by (shift * 8) bits. This function simulates the LITTLE ENDIAN SIMD.
out | the output of this function | |
in | the 128-bit data to be shifted | |
shift | the shift value |
static void period_certification | ( | void | ) | [static] |
This function certificate the period of 2^{SFMT_MEXP}-1.
static int sfmt_idxof | ( | int | i | ) | [inline, static] |
This function simulate a 32-bit array index overlapped to 64-bit array of LITTLE ENDIAN in BIG ENDIAN machine.
int is_sfmt_initialized = 0 [static] |
a flag: it is 0 if and only if the internal state is not yet initialized.
int sfmt_idx [static] |
index counter to the internal state array as double
uint64_t sfmt_pcv[2] = {SFMT_PCV1, SFMT_PCV2} [static] |
a period certification vector which certificate the period of 2^{SFMT_MEXP}-1.