Implicit scalar expansion doesn't work in MATLAB function block.

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Kaung
Kaung 2022-8-6
评论： Kaung 2022-8-8
I spent quite a lot of time trying to figure out why the same piece of function runs in MATLAB but not in a MATLAB function block called by Simulink. Then, I saw this post made two years ago about how implicit scalar expansion doesn't work for MATLAB function blocks for some reason and using bsxfun is one way to get around that. I just wanted to check if there's any update on this issue.. I'd rather not write two separate versions of the same thing if I can avoid it.
function ans = fcn()
ans = ones(4,3) .^ ones(4,1);

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Fangjun Jiang
Fangjun Jiang 2022-8-8
Good news. It seems it is available in R2021b, but not in R2021a. Check
https://www.mathworks.com/help/releases/R2021b/coder/ug/optimizie-implicit-expansion-in-generated-code.html
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Rik
Rik 2022-8-8
Although since there are no plans to remove bsxfun, you can safely write the one version with that.
And @Kaung, please don't use ans as a variable. Those code tricks you learn from Cody are terrible in every other situation.

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