def _convert_tol(ctx, tol):
if isinstance(tol, int_types):
return from_int(tol)
if isinstance(tol, float):
return from_float(tol)
if hasattr(tol, "_mpf_"):
return tol._mpf_
prec, rounding = ctx._prec_rounding
if isinstance(tol, basestring):
return from_str(tol, prec, rounding)
raise ValueError("expected a real number, got %s" % tol)
def _convert_tol(ctx, tol):
if isinstance(tol, int_types):
return from_int(tol)
if isinstance(tol, float):
return from_float(tol)
if hasattr(tol, "_mpf_"):
return tol._mpf_
prec, rounding = ctx._prec_rounding
if isinstance(tol, basestring):
return from_str(tol, prec, rounding)
raise ValueError("expected a real number, got %s" % tol)
def __new__(cls, num, prec=15):
prec = mlib.libmpf.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:
if type(num[1]) is str:
# it's a hexadecimal (coming from a pickled object)
# assume that it is in standard form
num = list(num)
num[1] = long(num[1], 16)
_mpf_ = tuple(num)
else:
_mpf_ = mpmath.mpf(
S.NegativeOne ** num[0] * num[1] * 2 ** num[2])._mpf_
else:
_mpf_ = mpmath.mpf(num)._mpf_
if not num:
return C.Zero()
obj = Expr.__new__(cls)
obj._mpf_ = _mpf_
obj._prec = prec
return obj
def __new__(cls, num, prec=15):
prec = mlib.libmpf.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:
if type(num[1]) is str:
# it's a hexadecimal (coming from a pickled object)
# assume that it is in standard form
num = list(num)
num[1] = long(num[1], 16)
_mpf_ = tuple(num)
else:
_mpf_ = mpmath.mpf(
S.NegativeOne ** num[0] * num[1] * 2 ** num[2])._mpf_
else:
_mpf_ = mpmath.mpf(num)._mpf_
if not num:
return C.Zero()
obj = Expr.__new__(cls)
obj._mpf_ = _mpf_
obj._prec = prec
return obj
