linuxaudio.org

On 11/10/2012 10:35 AM, John Rigg wrote:

quoted text
> On Fri, Nov 09, 2012 at 03:24:56PM +0100, Muffinman wrote:

>> Yeah, that explains why I didn't get any compiling error on a 32bit

>> computer and did get on a 64bit one (where I did correct the error).

>> However, the latter was satisfied with %li. Apparently in c++ there is

>> no difference between long and long int (as far as I can find through

>> Google) but for c I could not find much info on a potential difference.

>

> long is the same as long int in both. The problem is that int and long int

> are both 32 bits on i386, but on x86-64 int is 32 and long int is 64 bits.

spot on. It's architecture dependent. Here's an index:
http://www.makelinux.net/ldd3/chp-11-sect-1
For printing, one can use

  printf("val=" PRId64 "\n", (int64_t) val);
The only problematic one is size_t. printf's %z %Z is a GNU libc extension.
Back on topic, a good general introduction to pointers, malloc etc is

http://cslibrary.stanford.edu/102/PointersAndMemory.pdf
ciao,

robin

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