On Tue, 19 Nov 2013 13:20:22 -0800, Martynas Venckus <[email protected]> wrote: > Thanks, Anton. > > You can't do explicit casts as the standard mandates that those macros be > constant expressions.
Using a cast does not prevent it from being a constant expression. In fact the relevant chapter in the C99 standard (6.6) explicitly mentions casts in this context as permitted. > > Moreover, GCC itself exports those exact same values via __DBL_MAX > builtins, which are not double-precision anymore when used. Please be sure > to report this to GCC. > The value provided by newer gcc versions is explicitly cast to double. $ gcc-4.4 -dM -E - < /dev/null|grep __DBL_MAX__ #define __DBL_MAX__ 1.7976931348623157e+308 $ gcc-4.8 -dM -E - < /dev/null|grep __DBL_MAX__ #define __DBL_MAX__ ((double)1.79769313486231570815e+308L) So the problem only occurs because the value declared in your header is not treated as double. -- Anton Khirnov _______________________________________________ libav-devel mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-devel
