kc3-lang/gnulib/doc/posix-functions/daylight.texi
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Hash : adfbfffa
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Date : 2024-07-20T20:02:14
doc: Sort the ISO C and POSIX Function Substitutes by header file. * doc/gnulib.texi (Function Substitutes): Add one section per header file. * doc/posix-functions/*.texi: Each of these files is now a subsection.
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doc/posix-functions/daylight.texi
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@node daylight @subsection @code{daylight} @findex daylight POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/daylight.html} Gnulib module: --- Portability problems fixed by Gnulib: @itemize @end itemize Portability problems not fixed by Gnulib: @itemize @item This variable's contents are unreliable if you use a geographical @env{TZ} setting like @code{TZ="America/Los_Angeles"}. @item This variable is missing on some platforms: FreeBSD 14.0, OpenBSD 5.7. @item This variable is called @code{_daylight} on some platforms: mingw with @code{-DNO_OLDNAMES}, MSVC. @item The address of this variable is not a compile-time constant on some platforms: mingw, MSVC. @item Native Windows platforms (mingw, MSVC) support only a subset of time zones supported by GNU or specified by POSIX@. @xref{tzset}. @end itemize This variable is vestigial: it is not needed and does not suffice in general. It is planned to be removed from a future version of POSIX@. A more portable way of getting the UTC offset is to use @code{strftime} with the @code{%z} format. @xref{strftime}.