How to tell if running 32- or 64-bit Matlab?

How can I tell if I am running 32- or 64-bit Matlab?

Several people suggest using the "computer" function, but doesn't that just tell you about your OS? For example, if I am running 32-bit Matlab on a 64-bit platform, wouldn't "computer" tell me 64 bits?

Answer 1

[Andrew Newell]

You could use

mexext

(see How can I determine if I am running a 32-bit version of MATLAB or a 64-bit version of MATLAB?

Answer 2

[Sarah]

It seems like "computer" does the same thing....

[Andrew Newell]

Most of the time it will, but it can identify a 32-bit MATLAB on a 64-bit Mac.

Answer 3

[Sarah]

I have a Sony Vaio running 64-bit Windows 7 and I'm using 32-bit Matlab R2009b. "mexext" gives me "mexw32" (which is correct), but "computer" gives me "PCWIN" (meaning 32-bit OS), which is wrong....

[Matt Fig]

See the tips section here:

http://www.mathworks.com/help/techdoc/ref/computer.html

[Image Analyst]

Yes, it says "In some cases, both 32-bit and 64-bit versions of MATLAB can run on the same platform. In this case, the value returned by computer reflects which of these is running. For example, if you run a 32-bit version of MATLAB on a Windows x64 platform, computer returns PCWIN, indicating that the 32-bit version is running." but is there any way to find out both what operating system you're running AND how many bits MATLAB you're running? In other words, you're running 64 bit OS and 32 bit MATLAB. From what I can tell, this isn't available. Maybe some way combining system() with computer()?????