[Octave-bug-tracker] [bug #60784] Inconsistent behavior for boolean matrix types with matrix functions

[anonymous]

Follow-up Comment #10, bug #60784 (project octave):

While this discussion is going on, here is some more material to discuss:


A = (rand(1000) > 0.5); # A is boolean
B = A^2;                # boolean^2 converts to double
B = single(A)^2;        # B is type single
B = int8(A)^2;          # error
B = int16(A)^2;         # error
B = int32(A)^2;         # error


Now why is it OK to silently convert a boolean type to double but not the
integer types? Opening up that possibility could create problems with memory
usage though, so it's not clear-cut.

Based on comment #1 and comment #9, it might be better to require that all
matrix functions require single or double, and any type conversions need to be
done by the user explicitly. The price would be user inconvenience though, so
again the tradeoff is not clear.

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