@node _toupper
@section @code{_toupper}
@findex _toupper

Removed in POSIX.1-2024.
POSIX.1-2017 specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/_toupper.html}

Gnulib module: ---

Portability problems fixed by Gnulib:
@itemize
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
macOS 14, Minix 3.1.8, Android 4.4.
@item
This function is removed in POSIX.1-2024.
Use the function @code{toupper} instead.
@end itemize
