fenv.texi

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Hash : 21bad22d
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Date : 2024-12-27T23:14:06

Rename module fenv to fenv-h.

* modules/fenv-h: Renamed from modules/fenv.
* modules/fenv-h-tests: Renamed from modules/fenv-tests.
* modules/fenv-h-c++-tests: Renamed from modules/fenv-c++-tests.
* tests/test-fenv-h.c: Renamed from tests/test-fenv.c.
* tests/test-fenv-h-c++.cc: Renamed from tests/test-fenv-c++.cc.
* doc/posix-headers/fenv.texi: Update.
* modules/* (Depends-on): Update.
* modules/fenv: New file.

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doc/posix-headers/fenv.texi

@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

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doc/posix-headers/fenv.texi