[Octave-bug-tracker] [bug #63444] "if (COND)" is much slower than "if (all (COND))"

[John W. Eaton]

Follow-up Comment #7, bug #63444 (project octave):

Beware the cost of checking the reference count with the "A(i)" indexing.  You
might want to avoid that by using "const NDArray A = ..." or by using
"args(1).array_value().data()".

Also, how smart is GCC these days?  Does it compile the two-loop case to be
essentially the same as the single loop?  What happens if each loop in the two
loop case is defined in a separate function as I think we have in Octave?


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