kc3-lang/gnulib/doc/pastposix-functions/gettimeofday.texi

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  Date : 2024-07-20T13:44:43
  

  doc: Update status of functions that are removed from POSIX:2024.
  
  * doc/pastposix-functions/_longjmp.texi: Moved here
  fromdoc/posix-functions/.
  * doc/pastposix-functions/_setjmp.texi: Likewise.
  * doc/pastposix-functions/_tolower.texi: Likewise.
  * doc/pastposix-functions/_toupper.texi: Likewise.
  * doc/pastposix-functions/fattach.texi: Likewise.
  * doc/pastposix-functions/fdetach.texi: Likewise.
  * doc/pastposix-functions/ftw.texi: Likewise.
  * doc/pastposix-functions/getitimer.texi: Likewise.
  * doc/pastposix-functions/getmsg.texi: Likewise.
  * doc/pastposix-functions/getpmsg.texi: Likewise.
  * doc/pastposix-functions/gets.texi: Likewise.
  * doc/pastposix-functions/gettimeofday.texi: Likewise.
  * doc/pastposix-functions/ioctl.texi: Likewise.
  * doc/pastposix-functions/isascii.texi: Likewise.
  * doc/pastposix-functions/isastream.texi: Likewise.
  * doc/pastposix-functions/posix_trace_*.texi: Likewise.
  * doc/pastposix-functions/pthread_getconcurrency.texi: Likewise.
  * doc/pastposix-functions/pthread_setconcurrency.texi: Likewise.
  * doc/pastposix-functions/putmsg.texi: Likewise.
  * doc/pastposix-functions/putpmsg.texi: Likewise.
  * doc/pastposix-functions/setitimer.texi: Likewise.
  * doc/pastposix-functions/setpgrp.texi: Likewise.
  * doc/pastposix-functions/sighold.texi: Likewise.
  * doc/pastposix-functions/sigignore.texi: Likewise.
  * doc/pastposix-functions/siginterrupt.texi: Likewise.
  * doc/pastposix-functions/sigpause.texi: Likewise.
  * doc/pastposix-functions/sigrelse.texi: Likewise.
  * doc/pastposix-functions/sigset.texi: Likewise.
  * doc/pastposix-functions/tempnam.texi: Likewise.
  * doc/pastposix-functions/toascii.texi: Likewise.
  * doc/pastposix-functions/ulimit.texi: Likewise.
  * doc/pastposix-functions/utime.texi: Likewise.
  * doc/gnulib.texi (Function Substitutes): Don't include them here.
  (Legacy Function Substitutes): Include them here.
  

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• doc/pastposix-functions/gettimeofday.texi

• @node gettimeofday
  @section @code{gettimeofday}
  @findex gettimeofday
  
  Removed in POSIX.1-2024.
  POSIX.1-2017 specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/gettimeofday.html}
  
  Gnulib module: gettimeofday
  
  Portability problems fixed by Gnulib:
  @itemize
  @item
  This function is missing on some platforms:
  MSVC 14.
  @item
  This function is declared with a nonstandard function prototype (only one
  argument, or ``...'' after the first argument) on some platforms.
  @item
  On some platforms, the second argument has type @code{struct
  timezone*} rather than @code{void *}, making it an error to redeclare
  the function with the POSIX signature:
  glibc.
  However, rather than penalize these systems with a replacement
  function, gnulib defines @code{GETTIMEOFDAY_TIMEZONE} to the
  appropriate type for use in avoiding a compiler warning if assigning
  @code{gettimeofday} to a function pointer.
  @item
  This function has only a precision of 15.6 milliseconds on some platforms:
  mingw.
  @end itemize
  
  Portability problems not fixed by Gnulib:
  @itemize
  @item
  Behavior is non-portable if the second argument to @code{gettimeofday}
  is not @code{NULL}.
  @item
  This function is removed in POSIX.1-2024.
  Use the Gnulib module @code{gettime} or @code{timespec_get} instead.
  (POSIX recommends to use the function @code{clock_gettime}, but there is
  no corresponding Gnulib module for it yet.)
  @end itemize
  

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