kc3-lang/gnulib/doc/posix-functions/towupper.texi

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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/towupper.texi

• @node towupper
  @subsection @code{towupper}
  @findex towupper
  
  POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/towupper.html}
  
  Gnulib module: wctype-h
  
  Portability problems fixed by Gnulib:
  @itemize
  @item
  This function returns values of which the upper 16 bits are incorrect
  on some platforms:
  mingw.
  @item
  This function cannot be called from plain inline or extern inline functions
  on some platforms:
  macOS 10.8.
  @end itemize
  
  Portability problems not fixed by Gnulib:
  @itemize
  @item
  On Windows and 32-bit AIX platforms, @code{wchar_t} is a 16-bit type and therefore cannot
  accommodate all Unicode characters.
  However, the Gnulib function @code{c32toupper}, provided by Gnulib module
  @code{c32toupper}, operates on 32-bit wide characters and therefore does not
  have this limitation.
  @item
  This function returns wrong values even for the ASCII characters
  in a zh_CN.GB18030 locale on some platforms:
  @c https://gnats.netbsd.org/cgi-bin/query-pr-single.pl?number=57339
  NetBSD 10.0.
  @end itemize
  

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