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Cross-kind casting in asarray()

See original GitHub issue

Should asarray() allow arbitrary casting between dtypes if you call asarray(x, dtype=dtype)? It isn’t really clear in the spec if, e.g., asarray(x, dtype=bool) should be required to work if x is an integer or float array, or asarray(x, dtype=float64) if x is integer, and so on. My feeling is that it definitely should work if dtype is a promotable type from x.dtype, but I don’t know if casts that aren’t required to promote should also be required to work.

Issue Analytics

State:
Created 2 years ago
Comments:5 (5 by maintainers)

Top GitHub Comments

1reaction

asmeurercommented, Sep 20, 2021

Oh yeah you are right about the _like functions (those always confuse me tbh because they seem rather pointless, but that’s neither here nor there).

0reactions

kgrytecommented, Sep 18, 2021

@asmeurer I am not seeing how the *_like functions are affected by cross-kind casting, as discussed in this issue. Maybe I am missing something, but the *_like functions don’t perform casting; the data of the input array is not touched.

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