#include <stdlib.h>
#include <string.h>
#include "MEM_guardedalloc.h"
#include "PIL_time.h"
#include "BLI_threads.h"
#include "BLI_rand.h"

Classes
struct	RNG
Defines
#define	MULTIPLIER 0x5DEECE66Dll
#define	MASK 0x0000FFFFFFFFFFFFll
#define	ADDEND 0xB
#define	LOWSEED 0x330E
Typedefs
typedef unsigned long long	r_uint64
Functions
RNG *	rng_new (unsigned int seed)
void	rng_free (RNG *rng)
void	rng_seed (RNG *rng, unsigned int seed)
void	rng_srandom (RNG *rng, unsigned int seed)
int	rng_getInt (RNG *rng)
double	rng_getDouble (RNG *rng)
float	rng_getFloat (RNG *rng)
void	rng_shuffleArray (RNG rng, void data, int elemSize, int numElems)
void	rng_skip (RNG *rng, int n)
void	BLI_srand (unsigned int seed)
void	BLI_srandom (unsigned int seed)
int	BLI_rand (void)
double	BLI_drand (void)
float	BLI_frand (void)
void	BLI_fillrand (void *addr, int len)
void	BLI_array_randomize (void *data, int elemSize, int numElems, unsigned int seed)
void	BLI_thread_srandom (int thread, unsigned int seed)
int	BLI_thread_rand (int thread)
float	BLI_thread_frand (int thread)
Variables
unsigned char	hash []
static RNG	theBLI_rng = {0}
static RNG	rng_tab [BLENDER_MAX_THREADS]

Detailed Description

Definition in file rand.c.

Define Documentation

#define ADDEND 0xB

Definition at line 57 of file rand.c.

Referenced by rng_getInt().

#define LOWSEED 0x330E

Definition at line 59 of file rand.c.

Referenced by rng_seed().

#define MASK 0x0000FFFFFFFFFFFFll

Definition at line 54 of file rand.c.

Referenced by rng_getInt().

#define MULTIPLIER 0x5DEECE66Dll

Definition at line 53 of file rand.c.

Referenced by rng_getInt().

Typedef Documentation

typedef unsigned long long r_uint64

Definition at line 51 of file rand.c.

Function Documentation

void BLI_array_randomize	(	void *	data,
		int	elemSize,
		int	numElems,
		unsigned int	seed
	)

Shuffle an array randomly using the given seed. contents. This routine does not use nor modify the state of the BLI random number generator.

Definition at line 169 of file rand.c.

References rng_seed(), and rng_shuffleArray().

Referenced by applyModifier(), distribute_threads_init_data(), isb_add_samples(), and isb_add_samples_transp().

double BLI_drand ( void )

Return a pseudo-random number N where 0.0<=N<1.0

Definition at line 153 of file rand.c.

References rng_getDouble().

Referenced by alter_co(), BLI_initjit(), hashvert_flag(), rand_timeoffs(), and RE_make_stars().

void BLI_fillrand	(	void *	addr,
		int	len
	)

Fills a block of memory starting at addr and extending len bytes with pseudo-random contents. This routine does not use nor modify the state of the BLI random number generator.

Definition at line 161 of file rand.c.

References p, PIL_check_seconds_timer(), rng_getInt(), and rng_seed().

float BLI_frand ( void )

Return a pseudo-random number N where 0.0f<=N<1.0f

Definition at line 157 of file rand.c.

References rng_getFloat().

Referenced by applyModifier(), basic_force_cb(), boid_body(), brush_add(), brush_cut(), brush_jitter_pos(), calculatePropRatio(), collision_response(), createFacepa(), defocus_blur(), distribute_simple_children(), distribute_threads_exec(), distribute_threads_init_data(), image_buffer_rect_update(), IMB_partial_rect_from_float(), IMB_rect_from_float(), init_jitter_plane(), lensDistort(), object_select_random_exec(), psys_create_frand(), RandomSpherical(), rule_average_speed(), rule_avoid_collision(), rule_fight(), sculpt_update_cache_variants(), select_random_metaelems_exec(), selectrandom_curve(), selectrandom_mesh(), and sort_faces_exec().