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 = cls.context._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
v = new(cls)
v._mpf_ = normalize(sign, man, exp, bc, prec, rounding)
return v
elif type(val) is tuple:
if len(val) == 2:
v = new(cls)
v._mpf_ = from_man_exp(val[0], val[1], prec, rounding)
return v
if len(val) == 4:
sign, man, exp, bc = val
v = new(cls)
v._mpf_ = normalize(sign, MPZ(man), exp, bc, prec, rounding)
return v
raise ValueError
else:
v = new(cls)
v._mpf_ = mpf_pos(cls.mpf_convert_arg(val, prec, rounding), prec,
rounding)
return v
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 = cls.context._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
v = new(cls)
v._mpf_ = normalize(sign, man, exp, bc, prec, rounding)
return v
elif type(val) is tuple:
if len(val) == 2:
v = new(cls)
v._mpf_ = from_man_exp(val[0], val[1], prec, rounding)
return v
if len(val) == 4:
sign, man, exp, bc = val
v = new(cls)
v._mpf_ = normalize(sign, MPZ(man), exp, bc, prec, rounding)
return v
raise ValueError
else:
v = new(cls)
v._mpf_ = mpf_pos(cls.mpf_convert_arg(val, prec, rounding), prec, rounding)
return v
def _parse_prec(ctx, kwargs):
if kwargs:
if kwargs.get('exact'):
return 0, 'f'
prec, rounding = ctx._prec_rounding
if 'rounding' in kwargs:
rounding = kwargs['rounding']
if 'prec' in kwargs:
prec = kwargs['prec']
if prec == ctx.inf:
return 0, 'f'
else:
prec = int(prec)
elif 'dps' in kwargs:
dps = kwargs['dps']
if dps == ctx.inf:
return 0, 'f'
prec = dps_to_prec(dps)
return prec, rounding
return ctx._prec_rounding
def _parse_prec(ctx, kwargs):
if kwargs:
if kwargs.get('exact'):
return 0, 'f'
prec, rounding = ctx._prec_rounding
if 'rounding' in kwargs:
rounding = kwargs['rounding']
if 'prec' in kwargs:
prec = kwargs['prec']
if prec == ctx.inf:
return 0, 'f'
else:
prec = int(prec)
elif 'dps' in kwargs:
dps = kwargs['dps']
if dps == ctx.inf:
return 0, 'f'
prec = dps_to_prec(dps)
return prec, rounding
return ctx._prec_rounding
def _parse_prec(ctx, kwargs):
if kwargs:
if kwargs.get("exact"):
return 0, "f"
prec, rounding = ctx._prec_rounding
if "rounding" in kwargs:
rounding = kwargs["rounding"]
if "prec" in kwargs:
prec = kwargs["prec"]
if prec == ctx.inf:
return 0, "f"
else:
prec = int(prec)
elif "dps" in kwargs:
dps = kwargs["dps"]
if dps == ctx.inf:
return 0, "f"
prec = dps_to_prec(dps)
return prec, rounding
return ctx._prec_rounding
def f(x, **kwargs):
if type(x) not in ctx.types:
x = ctx.convert(x)
prec, rounding = ctx._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 hasattr(x, '_mpf_'):
try:
return ctx.make_mpf(mpf_f(x._mpf_, prec, rounding))
except ComplexResult:
# Handle propagation to complex
if ctx.trap_complex:
raise
return ctx.make_mpc(mpc_f((x._mpf_, fzero), prec, rounding))
elif hasattr(x, '_mpc_'):
return ctx.make_mpc(mpc_f(x._mpc_, prec, rounding))
raise NotImplementedError("%s of a %s" % (name, type(x)))
def f(x, **kwargs):
if type(x) not in ctx.types:
x = ctx.convert(x)
prec, rounding = ctx._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 hasattr(x, '_mpf_'):
try:
return ctx.make_mpf(mpf_f(x._mpf_, prec, rounding))
except ComplexResult:
# Handle propagation to complex
if ctx.trap_complex:
raise
return ctx.make_mpc(mpc_f((x._mpf_, fzero), prec,
rounding))
elif hasattr(x, '_mpc_'):
return ctx.make_mpc(mpc_f(x._mpc_, prec, rounding))
raise NotImplementedError("%s of a %s" % (name, type(x)))
def _set_dps(ctx, n):
ctx._prec = ctx._prec_rounding[0] = dps_to_prec(n)
ctx._dps = max(1, int(n))
def __call__(self, prec=None, dps=None, rounding=None):
prec2, rounding2 = self.context._prec_rounding
if not prec: prec = prec2
if not rounding: rounding = rounding2
if dps: prec = dps_to_prec(dps)
return self.context.make_mpf(self.func(prec, rounding))
def _set_dps(ctx, n):
ctx._prec[0] = dps_to_prec(n)
ctx._dps = max(1, int(n))
def _set_dps(ctx, n):
ctx._prec[0] = dps_to_prec(n)
ctx._dps = max(1, int(n))
def _set_dps(ctx, n):
ctx._prec = ctx._prec_rounding[0] = dps_to_prec(n)
ctx._dps = max(1, int(n))
def __call__(self, prec=None, dps=None, rounding=None):
prec2, rounding2 = self.context._prec_rounding
if not prec: prec = prec2
if not rounding: rounding = rounding2
if dps: prec = dps_to_prec(dps)
return self.context.make_mpf(self.func(prec, rounding))
