(prec)
return from_man_exp(getrandbits(prec), -prec, prec, round_floor)
Return a raw mpf chosen randomly from [0, 1), with prec bits
    in the mantissa.
Return a raw mpf chosen randomly from [0, 1), with prec bits
    in the mantissa.
Return a raw mpf chosen randomly from [ 0 1 ) with prec bits in the mantissa .
def mpf_rand(prec):
    """Return a raw mpf chosen randomly from [0, 1), with prec bits
    in the mantissa."""
    global getrandbits
    if not getrandbits:
        import random
        getrandbits = random.getrandbits
    return from_man_exp(getrandbits(prec), -prec, prec, round_floor)
def mpf_rand ( prec ) : global getrandbits if not getrandbits : import random getrandbits = random . getrandbits return from_man_exp ( getrandbits ( prec ) , - prec , prec , round_floor )