how can .mexw64 be converted to mex.64 so that i can run it on my MATLAB function block

I use matlab R2013a and when I tried referring to a mex code with the extension .mexw64 I got an error message saying it is an unsupported file extension. Is there a way to use d file directly in a MATLAB function block or do I need to covert it to a compatible format?

[Walter Roberson]

Are you using 32 bit MATLAB or 64 bit? Are you using MS Windows?

[tochukwu victor]

Am using 64 bit MATLAB and MS Wimdows

[Walter Roberson]

Please show the output of

mexext

[tochukwu victor]

The output is mexw64