nulp_diff(x, y, dtype=None)
For computing the ULP difference, this API does not differentiate between various representations of NAN (ULP difference between 0x7fc00000 and 0xffc00000 is zero).
number of representable floating point numbers between each item in x and y.
For each item in x and y, return the number of representable floating points between them.
# By definition, epsilon is the smallest number such as 1 + eps != 1, so # there should be exactly one ULP between 1 and 1 + eps >>> nulp_diff(1, 1 + np.finfo(x.dtype).eps) 1.0
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