MATLAB: .mex file for a function

Question

Hello,

I am running into some trouble for a function given by:

function y = fyrandperm(x)
    % FYRANDPERM - Shuffles elements in random order.
    %

    %    Y = FYRANDPERM(X)
    %    If X is a real matrix or vector then Y contains the elements 
    %    of X in random order. If X is a real scalar then Y contains 
    %    1:X in random order.
    %
    n = prod(size(x));
    if n == 1
       n = x;
       x = 1:n;
    end
    y = fyrandperm_mex(x,rand(1,n));

I did not write this function myself and I am trying to use it but the problem is that it calls to

fyrandperm_mex

which is a .mexw64 file. I am not precisely sure what to do with this as I cant really open it on my 2015b matlab for mac. Could someone please offer some advice ? The error I am running into states: Error in fyrandperm (line 20) y = fyrandperm_mex(x,rand(1,n));

Any help would be appreciated.

Thank you

Answer 1

You need to get a copy of fyrandperm_mex compiled for OS-X . If the source code is available, you can use the "mex" command to compile it (after you have installed and configured a compiler for your OS-X version)

mex -v fyrandperm_mex