Commits on Feb 2, 2024

1. Only require axis to be negative in vecdot and cross …

   Nonnegative axes and negative axes less than the smaller of the two arrays are
   unspecified.
   
   This is because it is ambiguous in these cases whether the
   dimension should refer to the axis before or after broadcasting. Preciously,
   the spec stated it should refer to the dimension before broadcasting, but this
   deviates from NumPy gufunc behavior, and results in ambiguous and confusing
   situations, where, for instance, the result of a the function is different
   when the inputs are manually broadcasted together.
   
   Also clean up some of the cross text a little bit since the computed dimension
   must be exactly size 3.
   
   Fixes data-apis#724
   Fixes data-apis#617
   
   See the discussion in those issues for more details.

   

   asmeurer committed Feb 2, 2024
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