Matlab function takes 1 argument, Java caller provides 2

The Mathworks page for an example makesqr.m shows a 1-argument function

% makesqr.m
%----------
function y = makesqr(x)
y = magic(x);

This gets generated into a Java package. However, the `step 16` of the Java invoker shows `makesqr` with *two* arguments.

result = theMagic.makesqr(1, n);

Can anyone please explain this difference in the number of arguments?

Answer 1

[Walter Roberson]

https://www.mathworks.com/matlabcentral/answers/157478-how-do-i-access-the-arguments-passed-in-mexfunction-in-matlab

The first input to a generated function is the number of left-hand sides.

[FM]

Hi, Walter,

Thanks for that. The extra leading argument is also described at "Pass Arguments To and From Java". That page also describes how to accomplish multiple inputs/outputs.