rand.c File Reference

Include dependency graph for rand.c:

Defines
#define	BLOCK_SIZE   64
Functions
static void	vlc_rand_init (void)
void	vlc_rand_bytes (void *buf, size_t len)
static void	init_rand48 (void)
double	vlc_drand48 (void)
	PRNG uniformly distributed between 0.0 and 1.0 with 48-bits precision.
long	vlc_lrand48 (void)
	PRNG uniformly distributed between 0 and 2^32 - 1.
long	vlc_mrand48 (void)
	PRNG uniformly distributed between -2^32 and 2^32 - 1.
Variables
static uint8_t	okey [64]
static uint8_t	ikey [64]
struct {
bool   init
unsigned short   subi [3]
vlc_mutex_t   lock
}	rand48

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Define Documentation

#define BLOCK_SIZE   64

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Function Documentation

static void init_rand48

(

void

)

[static]

References rand48, subi, and vlc_rand_bytes().

Referenced by vlc_drand48(), vlc_lrand48(), and vlc_mrand48().

double vlc_drand48

(

void

)

PRNG uniformly distributed between 0.0 and 1.0 with 48-bits precision.

Note:

Contrary to POSIX drand48(), this function is thread-safe.

Warning:

Series generated by this function are not reproducible. Use erand48() if you need reproducible series.

Returns:

a double value within [0.0, 1.0] inclusive

References erand48(), init_rand48(), rand48, vlc_mutex_lock(), and vlc_mutex_unlock().

long vlc_lrand48

(

void

)

PRNG uniformly distributed between 0 and 2^32 - 1.

Note:

Contrary to POSIX lrand48(), this function is thread-safe.

Warning:

Series generated by this function are not reproducible. Use nrand48() if you need reproducible series.

Returns:

an integral value within [0.0, 2^32-1] inclusive

References init_rand48(), nrand48(), rand48, vlc_mutex_lock(), and vlc_mutex_unlock().

Referenced by ResetCurrentlyPlaying().

long vlc_mrand48

(

void

)

PRNG uniformly distributed between -2^32 and 2^32 - 1.

Note:

Contrary to POSIX mrand48(), this function is thread-safe.

Warning:

Series generated by this function are not reproducible. Use jrand48() if you need reproducible series.

Returns:

an integral value within [-2^32, 2^32-1] inclusive

References init_rand48(), jrand48(), rand48, vlc_mutex_lock(), and vlc_mutex_unlock().

Referenced by httpd_StreamCallBack(), input_item_add_subitem_tree(), and playlist_ItemArraySort().

void vlc_rand_bytes	(	void *	buf,
		size_t	len
	)

References AddMD5(), md5_s::buf, EndMD5(), ikey, InitMD5(), lock, NTPtime64(), okey, and vlc_rand_init().

Referenced by GenerateCnonce(), init_rand48(), and vlc_mkstemp().

static void vlc_rand_init

(

void

)

[static]

References ikey, okey, and vlc_open().

Referenced by vlc_rand_bytes().

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Variable Documentation

uint8_t ikey[64] [static]

Referenced by vlc_rand_bytes(), and vlc_rand_init().

bool init

vlc_mutex_t lock

uint8_t okey[64] [static]

Referenced by vlc_rand_bytes(), and vlc_rand_init().

struct { ... } rand48 [static]

Referenced by init_rand48(), vlc_drand48(), vlc_lrand48(), and vlc_mrand48().

unsigned short subi[3]

Referenced by init_rand48().