On Sun, Sep 6, 2015 at 5:30 AM, Stefan Behnel <stefan...@behnel.de> wrote: > Jeroen Demeyer schrieb am 06.09.2015 um 10:54: >> On 2015-09-05 17:09, Stefan Behnel wrote: >>> It now appends the 'U' suffix only to literals that are used in an unsigned >>> context (e.g. assignment to unsigned variable), and additionally appends >>> L/LL suffixes for integers that might exceed the int/long limits. >> >> Why not just keep it simple, append no suffixes and let the C/C++ compiler >> deal with it? No heuristics needed. >> >> More concretely, I would handle this as follows: >> * do not use any L or U suffix >> * write all DEF constants as hexadecimal in the source code >> >> This way, the C/C++ compiler will determine the integral type. > > I previously tried that with decimal literals and got warnings in gcc. > Hadn't tried hex literals. > > >> It will use >> the first type in the following list which can represent the number: >> - int >> - unsigned int >> - long >> - unsigned long >> - long long >> - unsigned long long >> >> The reason for the *hexadecimal* constants is that the unsigned types are >> not tried for decimal constants. > > That's interesting to know (you were quoting 6.4.4 of the C standard > apparently). C - what a language full of wonders.
Wow, I didn't know that either... thanks for the pointer. _______________________________________________ cython-devel mailing list cython-devel@python.org https://mail.python.org/mailman/listinfo/cython-devel
