[Octave-patch-tracker] [patch #8093] Convert isscalar to a built-in function

[Jason Alan Palmer]

Follow-up Comment #3, patch #8093 (project octave):

I wasn't aware that C++ functions are frowned upon. I don't have any
particular case where I'd call isscalar a bottleneck, just some scripts where
it is heavily used and gets pretty high on my profile results:

Function          Time (s)    Calls
-----------------------------------
some_function     133.64    1075200
another_function  133.219   1075200
isscalar          119.322  12906470
more_function     114.951   1075200
my_function       107.563       800
.
.
.
(I realize it got up there because it was called over ten million times....)

A quick check shows the built-in to be about 4x as fast on my machine.

(file #28421)
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File name: isscalar_built-in.diff         Size:3 KB


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