[cffi-devel] detecting int size used by library

[Tamas K Papp]

Hi,

Is there a way to detect the size of integers (ie 32 or 64 bit) used
by a library?

I am using LAPACK/BLAS (ATLAS) libraries via CFFI.  Recently, my
tests failed, and to my surprise, the solution was to use 32-bit ints.
Note that I am on a 64-bit platform, using the Ubuntu libraries, so
why this happens is a mystery.  But it would be great if I could
detect it somehow from within Lisp.

Thanks,

Tamas