np.reciprocal

np.reciprocal(x)

Returns the element-wise multiplicative inverse of a Galois field array.

References

• https://numpy.org/doc/stable/reference/generated/numpy.reciprocal.html

Examples

In [1]: GF = galois.GF(31)

In [2]: x = GF.Random(5, low=1); x
Out[2]: GF([27,  7, 15,  7,  1], order=31)

In [3]: y = np.reciprocal(x); y
Out[3]: GF([23,  9, 29,  9,  1], order=31)

In [4]: x * y
Out[4]: GF([1, 1, 1, 1, 1], order=31)

In [5]: x ** -1
Out[5]: GF([23,  9, 29,  9,  1], order=31)

In [6]: GF(1) / x
Out[6]: GF([23,  9, 29,  9,  1], order=31)

In [7]: GF(1) // x
Out[7]: GF([23,  9, 29,  9,  1], order=31)