NAME
    randbit - Blum-Blum-Shub pseudo-random number generator

SYNOPSIS
    randombit([x])

TYPES
    x		integer

    return	integer

DESCRIPTION
    If x > 0, randombit(x) returns a pseudo-random integer in [0, 2^x),
    i.e. the same as rand(2^x).  If the integer returned is

	    b_1 * 2^(x-1) + b_2 * 2^(x-2) + ... + b_n,

    where each b_i is 0 or 1, then b_1, b_2, ..., b_n may be
    considered as a sequence of x random bits.

    If x <= 0, randombit(x) causes the random-number generator to skip
    abs(x) bits, and returns abs(x).

    If x is omitted, it is assumed to have the value of 1.

    See the random() help page for details on the additive 55 shuffle
    pseudo-random number generator.

EXAMPLE
    > print srandom(0), randombit(20), randombit(20), randombit(20)
    RANDOM state 523139 567456 693508
    > print srandom(0), randombit(-20), randombit(20), randombit(-20)
    RANDOM state 20 567456 20

LIMITS
    x != 0

LIBRARY
    void zrandom(long cnt, ZVALUE *res)

SEE ALSO
    seed, srand, randbit, isrand, rand, srandom, israndom