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On Linux and in Mingw-w64, fexcept_t is defined as type unsigned short. There are packages in the wild which rely on the fact that fexcept_t is an integral type. We're changing the internal handling to use the bits just as in GLibc, so only the 6 lowest bits are used to reflect the hw bits. We even change the header file guard to reflect GLibc for compatibility. * include/fenv.h (_FENV_H): Rename from _FENV_H_ and set to 1 as in GLibc's header. (fexcept_t): Change to __uint16_t to be an integral type as in GLibc. * fenv.cc (fegetexceptflag): Align to the *flagp's type change. (fesetexceptflag): Ditto. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cygwin documentation is available on the net at http://cygwin.com You might especially be interested in http://cygwin.com/faq/faq.programming.html#faq.programming.building-cygwin