diff options
| -rw-r--r-- | doc/source/reference/routines.polynomials.classes.rst | 15 | ||||
| -rw-r--r-- | numpy/polynomial/_polybase.py | 5 |
2 files changed, 11 insertions, 9 deletions
diff --git a/doc/source/reference/routines.polynomials.classes.rst b/doc/source/reference/routines.polynomials.classes.rst index f44ddd46c..da0394305 100644 --- a/doc/source/reference/routines.polynomials.classes.rst +++ b/doc/source/reference/routines.polynomials.classes.rst @@ -35,11 +35,11 @@ degree :math:`n`, but could just as easily be the basis functions of any of the other classes. The convention for all the classes is that the coefficient :math:`c[i]` goes with the basis function of degree i. -All of the classes have the same methods, and especially they implement the -Python numeric operators +, -, \*, //, %, divmod, \*\*, ==, -and !=. The last two can be a bit problematic due to floating point -roundoff errors. We now give a quick demonstration of the various -operations using NumPy version 1.7.0. +All of the classes are immutable and have the same methods, and +especially they implement the Python numeric operators +, -, \*, //, %, +divmod, \*\*, ==, and !=. The last two can be a bit problematic due to +floating point roundoff errors. We now give a quick demonstration of the +various operations using NumPy version 1.7.0. Basics ------ @@ -187,6 +187,11 @@ Which gives the polynomial `p` in Chebyshev form. This works because the original polynomial. However, all the multiplications and divisions will be done using Chebyshev series, hence the type of the result. +It is intended that all polynomial instances are immutable, therefore +augmented operations (``+=``, ``-=``, etc.) and any other functionality that +would violate the immutablity of a polynomial instance are intentionally +unimplemented. + Calculus -------- diff --git a/numpy/polynomial/_polybase.py b/numpy/polynomial/_polybase.py index ccbf30bda..dc72e7661 100644 --- a/numpy/polynomial/_polybase.py +++ b/numpy/polynomial/_polybase.py @@ -17,7 +17,7 @@ from . import polyutils as pu __all__ = ['ABCPolyBase'] class ABCPolyBase(object): - """An abstract base class for series classes. + """An abstract base class for immutable series classes. ABCPolyBase provides the standard Python numerical methods '+', '-', '*', '//', '%', 'divmod', '**', and '()' along with the @@ -512,9 +512,6 @@ class ABCPolyBase(object): rem = self.__class__(rem, self.domain, self.window) return quo, rem - # Enhance me - # some augmented arithmetic operations could be added here - def __eq__(self, other): res = (isinstance(other, self.__class__) and np.all(self.domain == other.domain) and |