CODEWITHSUNDEEP
matlabx8664-bit
niels
niels

Reputation: 760

Determine if running x64 or x86 operating system in MATLAB

How is it possible in MATLAB to determine if the OS is x64 or x86?

NOTE: I have found the computer function but it is mentioned that in case a x32 MATLAB is running on a x64 OS then it returns x32 (instead of x64) so this function will not do.

Upvotes: 3

Views: 2244

Answers (2)

Andrew Janke
Andrew Janke

Reputation: 23858

From your comment, I assume you're running Windows.

Take a look at the environment variables PROCESSOR_ARCHITECTURE and PROCESSOR_ARCHITEW6432. The combination of their presence and values will tell you what you're running under.

x64 Matlab on x64 Windows:
PROCESSOR_ARCHITECTURE=AMD64

x86 Matlab on x86 Windows:
PROCESSOR_ARCHITECTURE=x86

x86 Matlab on x64 Windows:
PROCESSOR_ARCHITECTURE=x86
PROCESSOR_ARCHITEW6432=AMD64

Then you can use the environment variables PROGRAMFILES, PROGRAMFILES(X86), and PROGRAMW6432 to find the right "Program Files" path to launch your external app from, if it's installed in the conventional location.

Google "WoW64" for more info on how the Windows x64 and x86 environments interact.

Upvotes: 3

Nzbuu
Nzbuu

Reputation: 5251

On Windows, you could try parsing the output of dos('systeminfo'), but it's not exactly fast. On Linux, you could try parsing the output of unix('uname -a').

Upvotes: 1

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