galois.GF_factory¶
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galois.GF_factory(p, m, prim_poly=None, rebuild=False)[source]¶ Factory function to construct Galois field array classes of type GF(p^m).
If p = 2 and m = 1, this function will return galois.GF2. If p = 2 and m > 1, this function will invoke galois.GF2m_factory(). If p is prime and m = 1, this function will invoke galois.GFp_factory(). If p is prime and m > 1, this function will invoke galois.GFpm_factory().
- Parameters
p (int) – The prime characteristic of the field GF(p^m).
m (int) – The degree of the prime of the field GF(p^m).
prim_poly (galois.Poly, optional) – The primitive polynomial of the field. Default is None which will auto-determine the primitive polynomial.
rebuild (bool, optional) – A flag to force a rebuild of the class and its lookup tables. Default is False which will return the cached, previously-built class if it exists.
- Returns
A new Galois field class that is a sublcass of galois._GF.
- Return type