how to see the script of build-in function?

Hi all~

I put "edit sum" in the command line. And I only saw the notes about it (begin with %). How can I see the script of this function?

Thanks~

Answer 1

[Walter Roberson]

There is no "script" for it. sum() is coded in lower level code, such as C or Fortran, and is accessed from MATLAB in binary form. You cannot use a "decompiler" to "reverse engineer" the code without violating your license agreement.

To get access to the source that Mathworks uses for sum(), you need to get a job or internship at Mathworks.

[Yuji Zhang]

I see Walter. Thanks a lot!

I'll check some script of other functions to find out the things I want to see.