| @node fenv.h | |
| @section @file{fenv.h} | |
| POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/fenv.h.html} | |
| Gnulib module: fenv-h | |
| @mindex fenv-h | |
| Portability problems fixed by Gnulib: | |
| @itemize | |
| @item | |
| This header file is missing on some platforms: | |
| FreeBSD 5.2.1, NetBSD 5.0, OpenBSD 3.8, AIX 5.1, Cygwin 1.7.7, MSVC 9. | |
| @end itemize | |
| Portability problems not fixed by Gnulib: | |
| @itemize | |
| @item | |
| On MSVC, the values of the rounding direction macros have changed: | |
| @c https://github.com/MicrosoftDocs/cpp-docs/issues/4796 | |
| In MSVC 14, @code{FE_UPWARD} is 0x100 and @code{FE_DOWNWARD} is 0x200, | |
| whereas in MSVC 14.30, it's the opposite. | |
| @end itemize |