def __new__(cls, num, prec=15):
prec = mpmath.settings.dps_to_prec(prec)
if isinstance(num, (int, long)):
return Integer(num)
if isinstance(num, (str, decimal.Decimal)):
_mpf_ = mlib.from_str(str(num), prec, rnd)
elif isinstance(num, tuple) and len(num) == 4:
_mpf_ = num
else:
_mpf_ = mpmath.mpf(num)._mpf_
if not num:
return C.Zero()
obj = Basic.__new__(cls)
obj._mpf_ = _mpf_
obj._prec = prec
return obj
