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Re: [patch] Flag-controlled type conversions/promotions
On Sun, Jan 15, 2012 at 01:39:23PM -0500, Zydrunas Gimbutas wrote:
> Hi,
>
> Everything seems to be ok in this patch, except for minor typos in
> documentation: REAl -> REAL, alignement -> alignment.
Good catch.
> It would also be nice to extend the type conversion facility to
> include -fdefault-real-16, -fdefault-double-16, -fdefault-real-10,
> -fdefault-double-10, and add conversions for logical types, to
> complete the conversion table. These are not very commonly used
> (except for -fdefault-real-16, -fdefault-double-16, which would
> correspond to -r16 and -autodouble flags in some compilers), so we
> should be fine at this time.
Well, historically, -fdefault-real-8, -fdefault-integer-8,
and -fdefault-double-8 were provided for backwards compatibility
with g77's -r8, -d8, and -i8 options. There was no consideration
for other compilers.* Thus, I would discourage these new options
in favor of your -freal-N-real-M options.
* Craig Burley may have included -r8, -i8, and -d8 to be
compatible with other compilers, but I'm too lazy to go
code spelunking.
--
Steve