def _real_field(self):
"""
Return the underlying :class:`RealIntervalField`.
EXAMPLES::
sage: R = CIF._real_field(); R
Real Interval Field with 53 bits of precision
sage: ComplexIntervalField(200)._real_field()
Real Interval Field with 200 bits of precision
sage: CIF._real_field() is R
True
"""
try:
return self.__real_field
except AttributeError:
self.__real_field = real_mpfi.RealIntervalField(self._prec)
return self.__real_field
def _real_field(self):
try:
return self.__real_field
except AttributeError:
self.__real_field = real_mpfi.RealIntervalField(self._prec)
return self.__real_field