Tiny Mersenne Twister only 127 bit internal state. More...

#include "alpaka/core/BoostPredef.hpp"
#include <cstdint>
#include <cinttypes>

Classes
struct	TINYMT32_T

Macros
#define	MIN_LOOP 8

#define	PRE_LOOP 8

#define	TINYMT32_MASK UINT32_C(0x7fffffff)

#define	TINYMT32_MEXP 127

#define	TINYMT32_MUL (1.0f / 16777216.0f)

#define	TINYMT32_SH0 1

#define	TINYMT32_SH1 10

#define	TINYMT32_SH8 8

#define	UINT32_C(value) uint_least32_t(value)

#define	UINT32_MAX ((uint32_t)-1u)

Typedefs
typedef struct TINYMT32_T	tinymt32_t

Functions
static uint32_t	ini_func1 (uint32_t x)

static uint32_t	ini_func2 (uint32_t x)

static void	period_certification (tinymt32_t *random)

static double	tinymt32_generate_32double (tinymt32_t *random)

static float	tinymt32_generate_float (tinymt32_t *random)

static float	tinymt32_generate_float01 (tinymt32_t *random)

static float	tinymt32_generate_float12 (tinymt32_t *random)

static float	tinymt32_generate_floatOC (tinymt32_t *random)

static float	tinymt32_generate_floatOO (tinymt32_t *random)

static uint32_t	tinymt32_generate_uint32 (tinymt32_t *random)

static int	tinymt32_get_mexp (tinymt32_t *random)

void	tinymt32_init (tinymt32_t *random, uint32_t seed)

void	tinymt32_init_by_array (tinymt32_t *random, uint32_t init_key[], int key_length)

static void	tinymt32_next_state (tinymt32_t *random)

static uint32_t	tinymt32_temper (tinymt32_t *random)

static float	tinymt32_temper_conv (tinymt32_t *random)

static float	tinymt32_temper_conv_open (tinymt32_t *random)

Detailed Description

Tiny Mersenne Twister only 127 bit internal state.

Author: Mutsuo Saito (Hiroshima University); Makoto Matsumoto (University of Tokyo)

The 3-clause BSD License is applied to this software, see LICENSE.txt

Definition in file tinymt32.h.

Macro Definition Documentation

◆ MIN_LOOP

#define MIN_LOOP 8

Definition at line 286 of file tinymt32.h.

◆ PRE_LOOP

#define PRE_LOOP 8

Definition at line 287 of file tinymt32.h.

◆ TINYMT32_MASK

#define TINYMT32_MASK UINT32_C(0x7fffffff)

Definition at line 55 of file tinymt32.h.

◆ TINYMT32_MEXP

#define TINYMT32_MEXP 127

Definition at line 51 of file tinymt32.h.

◆ TINYMT32_MUL

#define TINYMT32_MUL (1.0f / 16777216.0f)

Definition at line 56 of file tinymt32.h.

◆ TINYMT32_SH0

#define TINYMT32_SH0 1

Definition at line 52 of file tinymt32.h.

◆ TINYMT32_SH1

#define TINYMT32_SH1 10

Definition at line 53 of file tinymt32.h.

◆ TINYMT32_SH8

#define TINYMT32_SH8 8

Definition at line 54 of file tinymt32.h.

◆ UINT32_C

#define UINT32_C ( value ) uint_least32_t(value)

Definition at line 33 of file tinymt32.h.

◆ UINT32_MAX

#define UINT32_MAX ((uint32_t)-1u)

Definition at line 30 of file tinymt32.h.

Typedef Documentation

◆ tinymt32_t

typedef struct TINYMT32_T tinymt32_t

Definition at line 1 of file tinymt32.h.

Function Documentation

◆ ini_func1()

static uint32_t ini_func1 ( uint32_t x )

static

This function represents a function used in the initialization by init_by_array

Parameters

x	32-bit integer

Returns: 32-bit integer

Definition at line 295 of file tinymt32.h.

◆ ini_func2()

static uint32_t ini_func2 ( uint32_t x )

static

This function represents a function used in the initialization by init_by_array

Parameters

x	32-bit integer

Returns: 32-bit integer

Definition at line 305 of file tinymt32.h.

◆ period_certification()

static void period_certification ( tinymt32_t * random )

static

This function certificate the period of 2^127-1.

Parameters

random tinymt state vector.

Definition at line 313 of file tinymt32.h.

◆ tinymt32_generate_32double()

static double tinymt32_generate_32double ( tinymt32_t * random )

inlinestatic

This function outputs double precision floating point number from internal state. The returned value has 32-bit precision. In other words, this function makes one double precision floating point number from one 32-bit unsigned integer.

Parameters

random tinymt internal status

Returns: floating point number r (0.0 <= r < 1.0)

Definition at line 277 of file tinymt32.h.

◆ tinymt32_generate_float()

static float tinymt32_generate_float ( tinymt32_t * random )

inlinestatic

This function outputs floating point number from internal state. This function is implemented using multiplying by (1 / 2^24). floating point multiplication is faster than using union trick in my Intel CPU.

Parameters

random tinymt internal status

Returns: floating point number r (0.0 <= r < 1.0)

Definition at line 220 of file tinymt32.h.

◆ tinymt32_generate_float01()

static float tinymt32_generate_float01 ( tinymt32_t * random )

inlinestatic

This function outputs floating point number from internal state. This function is implemented using union trick.

Parameters

random tinymt internal status

Returns: floating point number r (0.0 <= r < 1.0)

Definition at line 242 of file tinymt32.h.

◆ tinymt32_generate_float12()

static float tinymt32_generate_float12 ( tinymt32_t * random )

inlinestatic

This function outputs floating point number from internal state. This function is implemented using union trick.

Parameters

random tinymt internal status

Returns: floating point number r (1.0 <= r < 2.0)

Definition at line 231 of file tinymt32.h.

◆ tinymt32_generate_floatOC()

static float tinymt32_generate_floatOC ( tinymt32_t * random )

inlinestatic

This function outputs floating point number from internal state. This function may return 1.0 and never returns 0.0.

Parameters

random tinymt internal status

Returns: floating point number r (0.0 < r <= 1.0)

Definition at line 253 of file tinymt32.h.

◆ tinymt32_generate_floatOO()

static float tinymt32_generate_floatOO ( tinymt32_t * random )

inlinestatic

This function outputs floating point number from internal state. This function returns neither 0.0 nor 1.0.

Parameters

random tinymt internal status

Returns: floating point number r (0.0 < r < 1.0)

Definition at line 264 of file tinymt32.h.

◆ tinymt32_generate_uint32()

static uint32_t tinymt32_generate_uint32 ( tinymt32_t * random )

inlinestatic

This function outputs 32-bit unsigned integer from internal state.

Parameters

random tinymt internal status

Returns: 32-bit unsigned integer r (0 <= r < 2^32)

Definition at line 207 of file tinymt32.h.

◆ tinymt32_get_mexp()

static int tinymt32_get_mexp ( tinymt32_t * random )

inlinestatic

Definition at line 89 of file tinymt32.h.

◆ tinymt32_init()

void tinymt32_init	(	tinymt32_t *	random,
		uint32_t	seed
	)

inline

This function initializes the internal state array with a 32-bit unsigned integer seed.

Parameters

random	tinymt state vector.
seed	a 32-bit unsigned integer used as a seed.

Definition at line 331 of file tinymt32.h.

◆ tinymt32_init_by_array()

void tinymt32_init_by_array	(	tinymt32_t *	random,
		uint32_t	init_key[],
		int	key_length
	)

inline

This function initializes the internal state array, with an array of 32-bit unsigned integers used as seeds

Parameters

random	tinymt state vector.
init_key	the array of 32-bit integers, used as a seed.
key_length	the length of init_key.

Definition at line 354 of file tinymt32.h.

◆ tinymt32_next_state()

static void tinymt32_next_state ( tinymt32_t * random )

inlinestatic

This function changes internal state of tinymt32. Users should not call this function directly.

Parameters

random tinymt internal status

Definition at line 99 of file tinymt32.h.

◆ tinymt32_temper()

static uint32_t tinymt32_temper ( tinymt32_t * random )

inlinestatic

This function outputs 32-bit unsigned integer from internal state. Users should not call this function directly.

Parameters

random tinymt internal status

Returns: 32-bit unsigned pseudorandom number

Definition at line 125 of file tinymt32.h.

◆ tinymt32_temper_conv()

static float tinymt32_temper_conv ( tinymt32_t * random )

inlinestatic

This function outputs floating point number from internal state. Users should not call this function directly.

Parameters

random tinymt internal status

Returns: floating point number r (1.0 <= r < 2.0)

Definition at line 148 of file tinymt32.h.

◆ tinymt32_temper_conv_open()

static float tinymt32_temper_conv_open ( tinymt32_t * random )

inlinestatic

This function outputs floating point number from internal state. Users should not call this function directly.

Parameters

random tinymt internal status

Returns: floating point number r (1.0 < r < 2.0)

Definition at line 178 of file tinymt32.h.

Classes

Macros

Typedefs

Functions

Detailed Description

Macro Definition Documentation

◆ MIN_LOOP

◆ PRE_LOOP

◆ TINYMT32_MASK

◆ TINYMT32_MEXP

◆ TINYMT32_MUL

◆ TINYMT32_SH0

◆ TINYMT32_SH1

◆ TINYMT32_SH8

◆ UINT32_C

◆ UINT32_MAX

Typedef Documentation

◆ tinymt32_t

Function Documentation

◆ ini_func1()

◆ ini_func2()

◆ period_certification()

◆ tinymt32_generate_32double()

◆ tinymt32_generate_float()

◆ tinymt32_generate_float01()

◆ tinymt32_generate_float12()

◆ tinymt32_generate_floatOC()

◆ tinymt32_generate_floatOO()

◆ tinymt32_generate_uint32()

◆ tinymt32_get_mexp()

◆ tinymt32_init()

◆ tinymt32_init_by_array()

◆ tinymt32_next_state()

◆ tinymt32_temper()

◆ tinymt32_temper_conv()

◆ tinymt32_temper_conv_open()