How can MATLAB's buit-in function give output as class single intead of double?

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All matlab function gives output as class double.
e.g.
[I,J] = ind2sub([H W],idx);
it is clear that I & J will be integer type but then also matlab gives values of I & J as class double.
How can get output as class interger 'int16'?
  5 Comments
Walter Roberson
Walter Roberson on 26 Aug 2018
Well, they could be done as uint64.
It would not be unreasonable for MATLAB to support passing in the name of the output type for ind2sub, but it does not currently do so.

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Answers (1)

Matt J
Matt J on 25 Aug 2018
function [I,J]=myind2sub(sz,idx)
I= mod(idx,int16(sz(1)));
J= int16( ceil(idx/sz(2)) );
end
  7 Comments
Stephen23
Stephen23 on 25 Aug 2018
@JAI PRAKASH: then copy ind2sub to your working directories, rename it myind2sub, and make whatever changes you want to the code. Do NOT change the original file.
Matt J
Matt J on 26 Aug 2018
Edited: Matt J on 26 Aug 2018
Yes, if you change the built-in ind2sub, you jeopardize the functionality of other Matlab built-ins that rely on its normal behavior.

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