Flint for example, uses C99. However, use of C99 has caused problems
for porting to Windows.
My recommendation would be to stick with ANSI C as much as possible. I
doubt comments // will be a problem. The inline sematics are different
in c99 and in general cause a screwup across compiler versions.
I would say, in a .h file static inline is fine, otherwise eschew the
use of inline.
Other problems for porting to windows include:
1) Variable declarations which are not at the start of a block
*including* in for loops, e.g. for (long i = 0; i < big; i++) is
invalid except in c99 (many c99 implementations don't even support
this).
2) printf("%ld") - on windows this needs to sometimes be
printf("%lld")
3) mpz_set_ui instead of setting to a limb (a limb is not necessarily
an unsigned long on Windows)
4) pointer arithmetic (assuming a pointer fits into a long), use
intptr_t (oh wait, you can't, that's c99 only)
Actually, best to not use C if you want it to compile on anything. C
is broken. (Partly joking).
That's my opinion anyway. But if you *really, really* need c99, then
Sage currently does support packages which use it.
Bill.
On 8 June, 13:21, Sergey Bochkanov <[email protected]>
wrote:
> Hello, SAGE developers!
>
> I have a question about C standard which SAGE packages should conform
> to. Is it C99? Plain ANSI C? "Modern ANSI C", i.e. ANSI C which
> borrowed several features from C99?
>
> I am working on Python<=>ALGLIB interface with intention to make it
> usable from SAGE. It is Python interface to the pure C package,
> created using CTYPES. I.e. C part of this interface is not C extension
> to Python package, it is totally separate shared library which is used
> through CTYPES foreign function library.
>
> Python-C interface generator is ready, now I work in automatic
> generation of C code. One week, I think, and it will be ready. But I
> can't decide what C standard to choose.
>
> As for me, I'd like to use ANSI C with several widely supported
> features from C99 - inline functions, "//" comments, maybe something
> else. But this thing should be compiled for SAGE, so I don't know can
> I use something beyond ANSI C or not.
>
> There is no information on this subject at the SAGE Developer Guide,
> so I am asking this question here.
>
> --
> With best regards,
> Sergey mailto:[email protected]
--
To post to this group, send an email to [email protected]
To unsubscribe from this group, send an email to
[email protected]
For more options, visit this group at http://groups.google.com/group/sage-devel
URL: http://www.sagemath.org
