def __new__(cls, val=fzero, **kwargs):
"""A new mpf can be created from a Python float, an int, a
or a decimal string representing a number in floating-point
format."""
prec, rounding = prec_rounding
if kwargs:
prec = kwargs.get('prec', prec)
if 'dps' in kwargs:
prec = dps_to_prec(kwargs['dps'])
rounding = kwargs.get('rounding', rounding)
if type(val) is cls:
sign, man, exp, bc = val._mpf_
if (not man) and exp:
return val
return make_mpf(normalize(sign, man, exp, bc, prec, rounding))
elif type(val) is tuple:
if len(val) == 2:
return make_mpf(from_man_exp(val[0], val[1], prec, rounding))
if len(val) == 4:
sign, man, exp, bc = val
return make_mpf(normalize(sign, MP_BASE(man), exp, bc, prec, rounding))
raise ValueError
else:
return make_mpf(mpf_pos(mpf_convert_arg(val, prec, rounding), prec, rounding))
def __call__(self, prec=None, dps=None, rounding=None):
if not prec: prec = prec_rounding[0]
if not rounding: rounding = prec_rounding[1]
if dps: prec = dps_to_prec(dps)
return make_mpf(self.func(prec, rounding))
